Do I still need to go to the airport counter if I check in online?

Not always. If you only have carry-on and a mobile boarding pass, you can often go straight to security. You still need a counter or bag-drop desk if you have hold luggage, need documents verified, or the airline requires an airport check-in.

Is online check-in cheaper than at the airport?

With some low-cost airlines, yes — checking in at the airport can incur a fee, while online check-in is free within the allowed window. Always check your airline's rules to avoid an avoidable charge.

How to Check In Online: A Step-by-Step Guide (2026)

Q: When does online check-in open?

Most airlines open online check-in between 24 and 48 hours before departure and close it a few hours before the flight. The exact window varies by airline, so check your confirmation email or the airline's app.

Q: What do I need to check in online?

Typically your booking reference or airline account, the passenger's details, and passport or ID information for international flights. Have any visa or travel-authorisation details ready too, as some routes require them at check-in.

Reviewed by the ScanFlyGo team · Last updated: July 2026. Check-in rules differ by airline — always follow the instructions on your booking.

Quick answer

Online check-in usually opens 24 to 48 hours before departure and lets you confirm your seat and get a boarding pass on your phone before you reach the airport. Have your booking reference and passport or ID handy, complete the steps in the airline's app or website, and save the mobile boarding pass. If you have only carry-on, you can then head straight to security; with hold bags you still visit the bag-drop desk.

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When does online check-in open?

The window varies by airline but generally opens between 24 and 48 hours before your scheduled departure and closes a few hours before takeoff — often 1 to 3 hours for international flights. Some low-cost carriers open it earlier and charge a fee if you leave check-in until the airport, so it pays to know your airline's exact timing. Your confirmation email or the airline's app will state when the window opens.

What you need before you start

Booking reference (a six-character code) or your airline account login.
Passenger details exactly as they appear on the ticket and travel document.
Passport or ID information for international flights, plus any visa or travel-authorisation details.
A way to store the boarding pass — the airline app, a mobile wallet, or a printout as backup.

Step by step

Step	What you do
1	Open the airline's app or website and choose "Check in".
2	Enter your booking reference and last name, or log in.
3	Confirm passenger and passport details for each traveller.
4	Choose or confirm your seat (free or paid, depending on fare).
5	Add any bags if the airline lets you pre-pay online — usually cheaper than at the airport.
6	Get your boarding pass: save it to your phone's wallet and screenshot it as backup.

Mobile vs printed boarding pass

A mobile boarding pass in the airline app or your phone's wallet is convenient and updates automatically if your gate or time changes. That said, a small number of airports and airlines still ask for a printed pass, and phone batteries die, so a paper backup is a sensible safety net for important trips. Whichever you use, make sure the barcode is clear and undamaged.

Do you still need the airport counter?

Online check-in does not always mean skipping the desk. You can usually go straight to security if you are travelling with cabin baggage only and have a valid mobile or printed boarding pass. You still need a counter or bag-drop desk if you are checking hold luggage, if your travel documents must be verified in person, or if the airline flags that airport check-in is required for your route. Build in time for bag drop, which can have its own queue.

Common problems and fixes

If online check-in will not complete, the usual culprits are a document that needs manual verification, an unpaid bag or seat fee, or a route where authorities require in-person checks. Don't panic — simply arrive earlier and complete check-in at the airport. If the app shows an error, try the website, and keep your booking reference handy so an agent can help quickly.

Frequently asked questions

When does online check-in open?

Usually 24 to 48 hours before departure, closing a few hours before the flight. Check your confirmation or the airline app for the exact window.

Do I still need the airport counter?

Not always. With carry-on only and a boarding pass you can go straight to security; hold bags, document checks, or airline rules mean a visit to bag drop or the desk.

Is online check-in cheaper?

With some low-cost airlines, yes — airport check-in can carry a fee while online check-in is free within the window.

What do I need to check in online?

Your booking reference or account, passenger details, and passport or ID for international flights, plus any visa or travel-authorisation information.

The bottom line

Online check-in saves time and, with some airlines, money — but only if you do it inside the window and know whether you still need the bag-drop desk. Have your documents ready, save the boarding pass in more than one place, and arrive with enough buffer for security. Book your trip with a live search on ScanFlyGo, compare popular routes, and track your flight live so you know the moment anything changes.

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