Check-in is a key part of air travel. Yet, not everyone fully understands what it involves or how to complete it, which can lead to confusion—especially if you're flying with different airlines or lack travel experience.
That’s why this guide explains what flight check-in is, the different types available, and how to complete each one. With this information, your airport experience will be smoother and more predictable.
Check-in is the process of confirming your presence as a passenger on a previously booked flight. It’s a mandatory step after buying your plane tickets, as it signals to the airline that you are indeed planning to travel.
This registration activates your boarding pass and officially assigns your name to a specific seat in the cabin. From that moment, you are added to the list of authorized passengers for that flight.
In simple terms, check-in is the step that identifies you as a traveler before takeoff.
Airline check-in ensures that your spot on the flight is reserved and ready. It also helps the airline confirm the final passenger count, coordinate the boarding logistics, and calculate the plane’s weight.
Additionally, it’s the time when you can check luggage, correct minor errors, or verify that all details are in order.
This process marks the beginning of your journey. Once check-in is done, all that’s left is to get ready to fly.
Understanding what flight check-in is also means knowing how to do it. There are two main methods:
This is the traditional method, where you go to the airport to have your details, documents, and luggage reviewed. However, it requires arriving well in advance (typically 3 to 4 hours before your flight).
How to Check In at the Airport:
1. Locate your airline’s counter at the desk shown on the airport’s display screens to start the process.
2. Present your ID and booking code—the one you received when you purchased your ticket.
Note: Your ticket must include the TUA (Airport Use Fee). If it’s not covered, you won’t be allowed to board.
3. Hand over your checked luggage. If you’re traveling with bags for the hold, they’ll be weighed, tagged, and handled by the airline.
4. Receive your boarding pass. This document contains your name, flight number, seat, gate, and departure time.
5. Go through security checks. With your boarding pass in hand, head to the inspection area to access the waiting zone.
6. Head to the boarding gate. Check the airport screens for any updates, and wait for your group to be called for boarding.
In our travel tips, we always highlight that documentation is key when flying. And it all starts with check-in—where it’s essential that your boarding pass information matches your official ID.
What Is Online Check-In?
Online check-in is a more flexible method that allows you to complete the process from your phone or computer. Airlines like Aeroméxico, for example, let you get your boarding pass 24 to 48 hours before departure.
How to Check In Online:
1. Go to your airline’s website or app. Make sure online check-in is available.
2. Enter your details. This includes your first and last name, booking code, and sometimes the flight number and date.
3. Verify your information. Confirm that your flight details, destination, and departure times are correct.
This is also a good time to go over your travel checklist and make sure you have everything you need.
4. Choose your seat. Some fares let you select your preferred seat at no extra cost, while others assign one automatically.
5. Download or print your boarding pass. You can receive it by email, save it to your phone, or print it out.
6. Head to the airport. If you do not check your bags, you can go directly to the security checkpoints. But if you have hold luggage, go to the express modules to deliver them.
Each airline sets its own rules for online check-in, including when it opens and which platforms are allowed.
For example, Volaris offers three different check-in options, each with its own steps. The time window also differs between domestic and international flights.
You may be asked to present travel documents, such as your valid Mexican passport. This depends on the destination and the airline's policies.
Still unsure which airline to fly with? Use tools like Google Travel to compare routes, prices, and policies before booking.
Planning a trip abroad? Download our app and request your DolarCard.
Why? It’s simple: the card works with digital dollars and euros, helping you avoid currency conversion fees.
DolarCard is a global card available in Mexico, Argentina, Colombia, and Brazil, and can be used anywhere Mastercard is accepted to pay in foreign currency.
Plus, from the DolarApp, you can buy or sell USDc and EURc at a fair exchange rate.
No, it’s not. Online check-in is optional, but it’s highly recommended to speed up the process. You’ll save time, select your seat, and avoid delays—especially if you’re traveling light.
If you don’t complete the check-in, the airline may assume you’re not flying and cancel your seat. Even if you paid for your ticket, you can’t board without a boarding pass. You may also lose your right to a refund or change, depending on the airline’s policy.
It depends on the airline and flight type. Online check-in usually opens 24 to 48 hours before departure. At the airport, it’s best to arrive at least 3 hours early for international flights or 2 hours early for domestic ones.
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