S7 airline: check-in for flight. Check-in for an S7 airlines flight: rules, instructions When online check-in for an S7 flight opens

Siberia Airlines or S7 Airlines (Es Seven) is one of the major Russian air carriers, operating both domestic flights and international passenger services, the third largest airline in Russia. Currently, S7 airline covers more than 205 routes, 141 of which are Russian.

Over the past years, Siberian airlines have been striving to introduce modern online service technologies. Currently, S7 passengers have access to both online check-in and booking management through a mobile application.

After changing the color of the fuselages, the bright green aircraft of the S7 company became easily recognizable at any airport

Check-in rules

The standard check-in procedure for a flight, according to the rules of air transportation, takes place at the airport of departure. It consists of passenger registration, baggage check-in and pre-flight aviation security control. In case of an international flight, you must go through customs control. Check-in for flight S7 at the airport begins 2-3 hours before and ends 40 minutes before the scheduled departure time. Exceptions are possible, for example, at Domodedovo, check-in begins 24 hours before departure.

To successfully check-in and baggage, you must present an identification document at the airline counter. Here you can choose a seat or use the additional service of “superior seats”. Please note that by default, seats are allocated automatically.

Superior seats or “Extra space” are seats in the economy class cabin with an increased distance between the rows. This distance may vary depending on the type of aircraft, but in any case there will be more space on such a row than on a standard seat in the cabin.

The service is limited due to the fact that seats with extra space are most often located in the aircraft cabin near emergency exits, and air transportation rules prohibit certain categories of passengers from occupying such seats. Restrictions apply to passengers with luggage in the cabin or with animals, children, passengers who do not speak Russian or English, people with disabilities and pregnant women. A complete list of categories of persons for whom this service is not available can be found on the official website in the “Transportation Rules” section.

Airline plane on takeoff

After s7 check-in for a flight online, the passenger receives a boarding pass, which contains complete information about the flight:

passenger's first and last name
flight number
departure date
boarding deadline
gate number
seat number

How to book a flight online. Instructions

Now on the Esseven website or in your personal account in the mobile application, a full list of electronic services from purchasing a ticket to checking in for a flight is available.

The easiest way to buy an electronic air ticket is to visit the official S7 website and, after registering, book a ticket for the desired flight in the “Air tickets” tab. The ticket is booked for a specific period during which it must be redeemed. Compared to a traditional paper ticket, an electronic ticket has a number of advantages:

It cannot be lost or forgotten. All data is stored in the carrier's database;
It takes less time to purchase and registration; you can buy it without leaving your home;
You can manage your data using the “My Bookings” service. You can check your flight status, make changes or issue a refund at any time;
Payment for the flight of several passengers is carried out by bank card, while several tickets can be paid for in one transaction.

It is important to fill out all forms correctly when purchasing a ticket online.

Important! The reservation system recognizes the passenger's first and last name only when written in Latin letters. Be careful when filling out personal and visa information or use the system prompts.

Boarding the plane

To buy an e-ticket, you need to follow simple instructions:

Go to the airline's website.
Select the “Purchase and Management” tab, then the “Purchase” subsection.
In the “From” and “To” fields that appear, enter the city or airport of departure and arrival. The system accepts both the Russian name and the three-letter designation of the airport. For example, the hint “Moscow, Domodedovo, DME” will appear when you write any of these three words. In addition, if you do not specify an airport (Moscow, MOW), the site will offer all possible flights from any airport in this city to the point of arrival.
Select a travel date in the calendar. If you need a one-way ticket only, you need to uncheck the “Round and back” checkbox, then the date of the return flight will not be highlighted.
Select the number of passengers: adults, children or infants, payment currency and click on the “Search” button. On the next tab, the system will display all possible flight options for the specified date. At the top of the page there is a “price calendar” that shows prices for the specified destination for the coming days to the selected date. If it is possible to reschedule your flight, you can save money by choosing a day when the same ticket will cost less.
Below, in the form of a table, the Eiseven flights and tariffs suitable for the parameters are presented, indicating the cost and explanation of services. Each flight, in addition to the departure time, is designated by a unique digital code, for example, flight S7 905 Moscow (Domodedovo) - Yerevan or S7 1046 Sochi - Moscow (Domodedovo). You need to select the appropriate departure time and fare, and click on the “Add to cart” button.
If necessary, select additional services (extra luggage space, seat selection) and an insurance package. Additional services when purchased along with a ticket on the website are provided with a 10% discount, so it is more profitable to pay for them immediately than to purchase additionally at the airport. The system will also prompt the client to book a hotel in the city of arrival or a transfer to the airport. The “Proceed to payment” button will take the passenger to the payment page.
Fill in the passenger's passport details, contact information and select a payment method. The passenger can immediately pay for the order using the “Pay Now” button or book a ticket.

Note! The cost of the flight may vary, and, as a rule, the closer the departure date, the more expensive the ticket. On the website you can fix the cost of your reservation and pay for the ticket within two days at the price indicated at the moment.

After you have purchased your e-ticket, you can go through the standard check-in procedure at the airport, carrying only your identification document, or use S7 online check-in.

Booking Information! When purchasing a ticket, reservation of a specific seat in the cabin is not available. You can only choose a fare that includes a seat selection service; for example, the Basic Economy fare does not include such a service, that is, choosing a seat in the cabin will be paid separately at the airport counter or distributed automatically. When registering such a ticket electronically, seat selection will be blocked. In the Economy Flexible fare, the choice of seat is already included in the price of the flight, and during online check-in on the website or in the c7 application, you will be able to change the seat offered by the system.

Electronic registration

You can register for a flight online on the website, as well as through the S7 application.

To register for flight s7 on the website, you need to go to the “Check-in for flight” tab, indicate the ticket or reservation number (they can be found in the itinerary receipt or in the letter confirming the purchase of the ticket), enter your personal data in Latin and click the “Register” button. Next, you will be asked to select a seat (if this includes a tariff).

In the mobile application, just go to the “Check-in” tab. If authorization in your personal account is completed, the passenger's last name is filled in automatically. The airline client only needs to enter information about the ticket or reservation number and follow the system’s step-by-step prompts to receive a boarding pass.

You can print your electronic boarding pass directly at the airport - in special terminals

The boarding pass will be presented to the passenger in pdf format. You can print it at the airport terminals or at the check-in counter. In addition, the coupon received through the mobile application can be saved in the Wallet of the smartphone so that it is at hand at any time. With your boarding pass printed or downloaded to your phone, you can check your luggage at a special “Baggage Reception” counter (for example, such a system operates at Domodedovo) or at the general check-in counter. If a traveler is flying only with hand luggage, then after electronic check-in you can immediately proceed to the pre-flight control area and boarding the plane.

Online check-in from 7 starts 30 hours before departure and ends 50 minutes. Baggage must be checked in no later than 40 minutes before takeoff.

Online registration restrictions

Online check-in may not be available if there are changes to your booking details less than 23 hours before departure.
Passengers of special categories (children, passengers with animals, seriously ill people, passengers on stretchers, passengers with extra luggage space) cannot use electronic check-in.
S7 online check-in is only available at certain airports, a list of which is available on the airline's website.

The S7 mobile application provides a lot of pleasant bonuses: in addition to quickly purchasing tickets and checking in for a flight online, for example, by becoming a member of the S7 Priority program, you can accumulate miles for flights or purchases from partner companies and spend them on air tickets or paying for airline services. For example, you can use miles to pay for a “superior seat” service or to change a seat in economy class to business class. How many miles will be credited for a flight depends on the flight distance and ticket fare.

The mobile application simplifies the purchase of air tickets as much as possible

The ability to quickly interact with carriers via smartphones meets the frantic pace of modern life, and organizations seeking to keep up with this pace deserve consideration. S7 became one of these companies when it turned long procedures with queues at the airport into a couple of clicks in a mobile application.

Check-in for a flight is one of the most important pre-flight formalities that a passenger must undergo before boarding. There are two ways to check in for any S7 Airlines flight: at the airport - at the counter and independently - online.

When does check-in for S7 Airlines flights begin and end?

Basically, at airports, the pre-flight procedure for international flights begins 2 or 3 hours before departure, for domestic flights - 1.5 hours before the flight. But in some ports the service may be available earlier. For example, at the Domodedovo air port (Moscow), check-in opens 46 hours before departure, and at the Tolmachevo air port (Novosibirsk), passengers can receive a boarding pass 24 hours before the departure of the plane. The end of the process occurs 60 minutes before the flight on international routes; for domestic flights, registration closes half an hour before the flight. If you are late for check-in, the passenger will not be allowed on the flight. Also, he will not be able to fly if the data he provides does not match the information recorded in the passport.

S7 Airlines gives passengers the right to purchase a ticket using one document proving their identity, and go through the check-in procedure using another. To do this, you need to approach an airport employee and make changes to the reservation system. This can also be done through the official website.

You can complete the formality online 30 hours before departure, and the registration procedure is completed 50 minutes before the flight. Now you have become familiar with when check-in for flights operated by S7 Airlines begins.

Instructions for registering via the Internet

You can register via the Internet on the airline’s website or using the installed mobile application on your smartphone. The sequence of actions when completing the procedure through the website:

You can print your boarding pass yourself at home or on site at the airport.

Important! Only those who own an S7 Priority card can choose any seat in the cabin for free; for others this service is paid. The cost of choosing a seat on board is 300 rubles. Here is the answer to the question of many - “is registration paid or not.”

You can register for a flight operated by S7 Airlines using an electronic ticket through the website onlinecheckin.io. But on this resource you need to pay for registration. Because here you can register at any time, regardless of when the procedure according to the air carrier’s rules begins or ends. To do this, you need to go to the main page of the site, select your company from the list of air carriers, enter data, and receive your boarding pass by email. The price of the service is 300 rubles for a one-way flight or 600 rubles for both directions.

After completing the online check-in service, you arrive at the airport no later than 40 minutes before the plane departs in order to have time to check in your luggage and also go through the necessary control.

When registering using the mobile program, the passenger receives an electronic code that must be saved on his smartphone. At the airport, this code must be presented to a scanning device, which will issue a paper boarding pass. If reading does not occur for any reason, then in this case you need to contact the registration desk for help.

When online registration is not possible

Not all passengers can use online check-in. Compulsory service at the port of departure is necessary for:

Persons who need special conditions during the flight, that is, small children, unaccompanied by adults, disabled people or seriously ill people who need to be transported on stretchers, blind, deaf-mutes.
Persons under the age of majority.
Those who fly with their child, and a separate seat is reserved for him.
Travelers with pets.
Those who reserve additional seats for the transportation of large cargo.

Also, online registration may not be available in some cities. The list of airports and cities where the service can be performed remotely via the Internet is on the airline’s website. It is also impossible to register online if the ticket was purchased one day before departure or if changes have been made to it.

When departing from the air ports of Yakutsk, Vladivostok, Khabarovsk, Krasnoyarsk, Irkutsk, Ulan-Ude, online check-in for S7 Airlines flights is not available if the flight is to Chinese cities. Also, online check-in is not possible if the flight is on the route Moscow (Domodedovo)–Kulyab (Khujand).

Check-in at the airport counter

Check in at the airport for flights operated by the S7 group, possibly by going to the counters that have the airline's logo, or to the numbers that are displayed on the information board. The employee needs to give your passport and ticket. If you are flying with children, you must present a birth certificate.

After your details are checked, your luggage is weighed, sent for loading, and you are given a boarding pass. It indicates the passenger's full name, flight number, gate number, and departure time of the airliner.

Is it possible to register through a self-registration kiosk?

Self-check-in kiosks are more convenient to complete pre-flight formalities in a faster way. They have a touch screen, a QR code reader, and a passport reader. They are very easy to use. The passenger must attach an identification document to the scanner and then enter flight information. After verification, the machine will print out your boarding pass. In this case, you can check in your luggage without queuing. On the carrier’s website, you must definitely clarify in which air ports the self-check-in kiosk is installed.

How to cancel check-in for flight S7

Cancellations can be made no later than 50 minutes before departure. To do this you need:

Go to the carrier's website.
Follow the prompts and cancel the procedure.
Make sure the cancellation has been recorded.

Booking seats on an airplane using an electronic ticket

Go to the official website of the airline and book a ticket, and then select the desired seat on board the airliner.

Air carriers are blocking seats near emergency exits. The seat selection service on S7 Airlines is free for S7 Priority card holders; other passengers will need to pay for the opportunity to choose a convenient and comfortable seat.

Comfortable seats cannot be reserved for the following categories of people:

Passengers with animals.
Travelers with small children.

Because they may interfere with the evacuation of passengers, such passengers are not permitted to occupy seats near the aircraft's emergency exits. These persons include: persons who do not speak Russian or English, those in custody, pregnant women, persons accompanying minor children, passengers with disabilities, and seriously ill people.

The online registration service is very convenient. It allows you to save time at the airport and choose a comfortable seat in the cabin without leaving your home or anywhere. Although this service was introduced in our country recently, most of our fellow citizens have already managed to appreciate its benefits from their own experience.

Flights require a special approach to travel planning. After all, it is not enough for a passenger to purchase an air ticket and present it upon boarding. Here the client arrives at the airport two to three hours before the plane departs to check in and check in luggage. However, today a convenient alternative to the classical control procedure has appeared. Let's talk in more detail about how to register for a plane via the Internet and consider the nuances of this innovation.

Airlines offer customers several ways to purchase tickets. The classic and familiar option for citizens is to buy an air ticket at the carrier’s ticket office. However, such situations involve waiting in line and some inconvenience for the person. Modern technical capabilities allow the passenger to undergo the maximum number of necessary procedures without leaving the apartment. To do this, you will have to use special online services to book a seat on the plane and register online.

Moreover, travelers note that there are several ways to order a flight. The booking service is available on the carrier’s website, the airport portal or in special search services - aggregators. The passenger independently chooses the appropriate option, focusing on his personal financial situation and preferences. The booking procedure is quite simple: the client makes a request for a specific flight and leaves a contact e-mail, and the itinerary receipt arrives at the specified address.

This method is convenient because the information you provided to the airline remains in the carrier’s database. Accordingly, the loss of a printout does not become a problem, since the information can be restored in a matter of minutes.

However, it will require attention and accuracy. To register correctly online, it is appropriate to familiarize yourself with the airline’s rules in advance and study the purchased ticket. It is important to pay attention to the procedure for passing control. These criteria determine the weight of the luggage and the number of passengers on board according to the itinerary receipt. In addition, the time is affected by the overall load of the airlines. When flying within Russia, you can manage it in 1.5 hours, but traveling overseas will take more time.

Keep in mind that when purchasing an air ticket, it is advisable for a passenger to find a diagram of the aircraft cabin in order to choose the best seat for a comfortable flight. Such layouts contain a detailed indication of the location of technical blocks and emergency exits, so it is not difficult to navigate here. In addition, when reserving seats, indicate how much hand luggage you are carrying and the weight of the luggage that will fly in the luggage compartment. Typically, in itinerary receipts, the carrier indicates the permissible weight of the passenger’s luggage and the current restrictions.

Options for purchasing tickets and flight details

The service of completing the registration procedure online has recently appeared in the country. Firstly, such a system simplifies the work of airlines and attracts people to travel by plane. Secondly, it is easier for clients to fill out travel details online - this significantly saves time and saves people from unnecessary inconvenience.

If you intend to complete all procedures online, here you will be able to avoid a trip to the airport three hours before departure to check in. But for passengers flying for the first time, it is still advisable to go to the airport terminal. In addition, airlines limit the list of citizens to whom electronic check-in is available. The lists included the following categories:

people with serious illnesses;
passengers with disabilities;
schoolchildren under twelve years of age unaccompanied by adults;
citizens who purchased air tickets through a travel agency;
flights in a group of more than 9 people;
people with excess baggage or dangerous substances.

If you decide to check in online, you don’t have to worry about your luggage. Here you just need to present your luggage at the airport at the counter marked Drop Off. Moreover, passing this type of control will be possible at a time convenient for the passenger. Another positive aspect of self-registration online is the choice of a comfortable seat in a relaxed home environment and without haste.

Going through the procedure

The actual process is unlikely to be difficult. Here you only need a printout of the itinerary receipt and the passenger’s passport. To issue a boarding pass, the encoding of the ticket and flight number will be useful. After filling out the empty fields, the service will offer an electronic version of the boarding pass, which the client prints out and presents at the airport control. Moreover, the things that the passenger takes into the cabin are not registered. But here it is advisable to keep within the weight of travel bags recommended by the carrier.

There are virtually no differences in online check-in between different airlines. But there are still some features that you need to know. Let's look at the details of what check-in for an S7 flight is. How many hours before departure will it be possible to arrange a trip, the specifics of the procedure and other similar nuances we will study below.

Details based on specific airlines

It is appropriate to study all the nuances regarding registration on the official portal of the airline. For S7 Group, just follow this link. A direct link to the online registration portal is located. The service becomes available thirty hours before takeoff, and the function blocks the ability to register in the last 50 minutes before the plane departs. To ensure that clients have time to drop off their belongings, it is advisable to arrive at the airport 45 minutes before the stated departure time.

Registration for flight “S7” using an electronic ticket number follows certain regulations. Let's look at the step-by-step procedure for registering passengers. The instructions look like this:

Open the “Check-in for flight” tab on the main page of the site.. Enter the airline ticket or reservation code.
We indicate the initials and check the correct spelling of the itinerary sheet with the passport. Please note that information about yourself is entered in Latin font. Click “Register”.
We put marks next to the names of travelers and select a flight. We clarify information about items prohibited for transportation and compare the data with the actual luggage. When you have checked all the information, click “Continue”.

After completing these steps, you are registered in the airline's system. The seat is determined automatically. If you are not satisfied with the chair that the company has selected, click the “change” button next to it and . For S7 Priority status members, changing your seat is a free service. For other users, the cost of the service is regulated according to the company’s tariffs.

Changing the passenger seat and getting ready to board

Check out the interior layout. The seats marked in gray have already been reserved by other people. The selection is available from places that are marked in white. Select a suitable chair and press the “Save and Continue” button. While the application is open, the client has the right to change his mind and change his choice within seven to eight hours before the end of the procedure. To see the layout of the aircraft, click the “Change” button next to the column where the location is indicated. However, making changes will require additional payment if the current tariff allows for it.

Selecting seats is a mandatory step in online registration

Arrive at the airport with a printed coupon 45 minutes before departure - this will allow you to calmly resolve issues with your luggage. Give your luggage to the special “Baggage Reception” point. At airports, this area has different names or items are accepted at a common counter. Next, go to the pre-flight hall.

It is advisable to save the ticket in pdf format in order to send the data by email at any time. You can also print your booked ticket at the airport terminals or near the counter where passengers are checked in.

Airline employees advise printing the coupon at home or at special organizations that offer a similar service. A good solution is to duplicate information by transferring the data to an electronic drive. In the same way, you will be able to check in for a flight with Russia or other airlines - here you will have to install a special application for a specific carrier and follow the instructions provided. More details about this in the video below.

Don't forget to read the baggage transportation conditions to avoid possible problems upon boarding. Online registration becomes unavailable if changes are made within the last 22 hours before takeoff. When a passenger checks in, he checks and, if necessary, corrects information that does not correspond to the traveler's passport data. Such changes are available until the registration deadline.

When registering online, the passenger only needs to arrive 45 minutes before departure to check in and check in luggage

If you receive a boarding pass at the airport, you will need to receive the paper before check-in closes, at least 40 minutes before takeoff. When you check in your luggage, the airport employee determines the weight of the luggage and transfers the items for further inspection. The line moves quite quickly at this counter. If you are traveling for a short time and only have carry-on luggage, the check procedures will take a minimum of time.

If you plan to check in on the spot, you will have to arrive at the airport a few hours before takeoff. You don’t spend a lot of time online, and it’s enough to arrive at the airport 40 minutes before takeoff. Information on how to check in for a flight using an electronic ticket via the Internet will be useful for people who fly frequently and try to keep up with the times.

There are several different ways to purchase air tickets - the passenger just needs to choose the most convenient option
Checking in for a flight online requires careful study of the flight conditions
For some categories of citizens, including unaccompanied children, electronic registration is not possible
To complete online check-in, the passenger will need a passport, ticket numbers, reservations and Internet access
Checking in for flight “S7” using an e-ticket number is a simple and accessible procedure

Airplanes, as the fastest and most convenient form of transport, make our lives much easier. However, air transport has one drawback that sometimes causes discomfort for travelers - the check-in process for a flight at the airport. Firstly, this puts you in front of the need to be at the airport much earlier than the plane's departure time (check-in at the airport usually begins 3 hours before departure), and secondly, you will most likely have to stand in a tedious line if you did not arrive at the very beginning of registration. If at the same time you are loaded with a decent amount of luggage or even heavy carry-on luggage, the waiting time is unlikely to be pleasant.

Online check-in for your flight will help solve all these and some other problems. To check in for a flight online, all you need is Internet access and preferably a printer to print out your boarding pass. This is a fairly simple process that will not only reduce your required time at the airport, but will also provide a number of other benefits:

Allows you to select seats on the plane in advance. This is especially true if you are traveling not alone, but with a partner or a large company. After all, you have probably encountered a situation where, having found yourself at the check-in counter at the airport, you were given seats at different ends of the cabin, or you could not enjoy the beauty of the clouds from the window, since all the seats by the window were already occupied. Checking in online in advance guarantees your desired seats
Online check-in also saves you from the possible consequences of overbooking. As a rule, many airlines sell more tickets than the number of seats on the flight, since there is always a chance that some passengers will cancel their bookings, cancel their tickets, or be late. If all the passengers who bought a ticket arrive for the flight, the last ones to register increase the chance of not being on board the plane, even with a ticket in hand. Online check-in begins long before check-in at the airport, which means you are guaranteed to fly on the flight you need.
You won't have to wait in long lines at check-in counters or baggage drop-off desks. With an electronic boarding pass in hand, you can check in your luggage at special drop-off luggage counters, or go to the check-in counter for your flight without queuing.

How to register online

Online check-in for a flight most often begins 24 hours before departure and ends simultaneously with the end of check-in at the airport (40 minutes before the flight) - as Aeroflot does - however, this time may vary depending on the airline, departure airport and etc. For example, the airline opens online check-in 30 hours before and closes 50 minutes before departure, Emirates allows you to do this 24 hours before and stops check-in 90 minutes before departure, Qatar Airways is open for online check-in from 36 hours to 90 minutes before the plane takes off.

So, how to check in for a plane online? Below you will find detailed information.

You can check in online for your flight on the website of the airline operating your flight. To check in for a flight online, you may need the following information:

Last name (and possibly first name) of the passenger
Departure airport
Booking code (PNR - 6-digit code) or e-ticket number (13 digits)
The email you provided when purchasing the ticket
Departure details (flight number, departure date and time)
Passport details (if the information provided when booking the ticket was incomplete)

As soon as you enter the required data, you will be taken to a page with information about your flight. Make sure all the details are correct and start choosing your seats on the plane. Pay special attention to the choice of seats if you are traveling with a child under 2 years old and have not issued a separate ticket for him. As a rule, the seats you need are indicated by a special indicator, which means that there is an additional oxygen mask for the baby in this row.

Once you complete the online check-in process, you will be able to receive your boarding pass. It’s great if you have the opportunity to print it out immediately, then you will arrive at the airport with this document. You can also send your boarding pass to your email or receive it via SMS. However, since you will still need a paper boarding pass at the airport, you will need to obtain one either from the electronic check-in terminals at the airport or, if they are not available, from the check-in counter.

Sometimes online registration can save not only your time, but also money. For example, Ryanair charges a fine of 70 euros if you do not check in online or forget to print your boarding pass.

However, it is worth paying attention to the fact that online check-in is not possible for all flights. It is not possible to check in online for unaccompanied children (5-12 years old), as well as persons in need of special services (transportation of animals, medical escort, etc.)

We hope this article has helped you understand more about how to complete online check-in and make your flight experience even more comfortable!

Why is it better to check in for a flight online?

Save time. If you're flying without luggage, online check-in allows you to skip the line at the check-in counter at your departure airport. You will already have your boarding pass in your hands (it will be sent to you by email, you just need to print it out). If you have luggage, you can also check it in online, and at the departure airport go to where you will receive a luggage tag. In addition, this is very convenient in case you are suddenly late for check-in at the airport.
You will be able to choose a seat in the cabin (sometimes this is a paid service, especially if the selected seat is Extra Space format, which are usually located near business class). You will also not be able to select seats at the emergency hatch online (they are only issued at the airport counter, since there are security restrictions; the airline employee must make sure that he is giving this seat to a person who, if necessary, can open the emergency exit without complicating the evacuation of other passengers).

Check-in for an S7 Airlines flight can be done:

online on the official website;
online through a mobile application;
at the self-service counter;
at the check-in counter at the departure airport.

The result will be receiving a boarding pass; you must have the number of the purchased ticket (order or reservation) and passport (for children - birth certificate).

Let's look at all the options in a little more detail.

On the official S7 website

You can only register on the airline’s official website https://www.s7.ru/?open=register no earlier than 30 hours and no later than 50 minutes before departure.

Via mobile application

In the section Services -> Check-in for a flight.
Application in AppStore https://apps.apple.com/us/app/s7-airlines/id552920434
On GooglePlay https://play.google.com/store/apps/details?id=ru.s7.android

At the self-service counter at the departure airport

You need to go to such a counter (it’s called Drop Off) of the departure airline (if the airline is S7, look for the green stylized counter). Enter the purchased ticket number on the screen and print your boarding pass. However, if you have luggage, you will need to check it either traditionally at the check-in counter or at the self-service baggage check-in counter.

At the check-in counter at the departure airport

The traditional way is to simply go to the counter where all passengers on your flight are checked in (above the counter there will be a board with the name of the departure airline, flight number and the name of the city where you are flying).
Important: online check-in is not available for passengers with small children, pets, minors, as well as for disabled people and passengers accompanying them, for group check-in of 9 people or more, for passengers traveling through travel agencies, for those carrying dangerous cargo.