Check-In and Bag Drop, Step by Step

Check-in is the moment the airline formally accepts you for the flight. Everything after it - security, the gate, boarding - depends on it having happened, which is why the deadlines are enforced more strictly than most travellers expect.

Online check-in

Most airlines open online check-in between 24 and 48 hours before departure. Doing it early gets you two things: a boarding pass without queueing, and a better chance at the seats that are free to select.

Some routes will not let you complete it online. Flights to the United States and to certain other destinations require document verification at a desk, and codeshare tickets sometimes push you to the operating airline's system. If the app refuses, that is usually why, and it is not a sign that something is wrong with the booking.

Save the boarding pass to your phone's wallet, and take a screenshot as well. Airport Wi-Fi has a habit of failing precisely when you need to reload an email attachment.

The paper question

A phone is fine at most airports. It is not fine at all of them. Some countries still require a printed pass at a security checkpoint, and some smaller airports have scanners that struggle with cracked screens or low brightness.

If you are travelling somewhere unfamiliar, printing the pass costs nothing and removes a variable.

Kiosks and bag tags

Self-service kiosks now handle a large share of check-in. You scan your passport or booking reference, confirm the details, and the machine prints a boarding pass and a baggage tag.

Attaching the tag is the part people get wrong. The tag loops through the handle so the barcode sits flat and readable, with the sticky end sealing it into a loop. If it wraps around a strap or twists into a spiral, the automated readers can miss it and your bag gets handled manually, which is slower and slightly riskier.

Bag drop

With a printed tag, you take the bag to a drop desk or an automated belt. Staff will usually:

1. Check that your passport matches the booking
2. Confirm visa or entry requirements for the destination
3. Weigh the bag and charge for any excess
4. Ask the standard security questions about packing

Answer the security questions honestly and briefly. They are scripted, and the person asking them is required to ask.

Bag drop closes earlier than the gate, typically 45 to 60 minutes before departure on short-haul and 60 minutes or more on long-haul. Once it closes, it closes. There is no version of this where the bag goes on the plane after the hold has been loaded.

Full-service desks

You still need a staffed desk for:

• Oversized or unusual items, including sports equipment and instruments
• Travelling with an infant on your lap
• Assistance requests and reduced mobility support
• Pets travelling in the cabin or hold
• Any document that could not be verified online

Give yourself extra time for all of these. The queue for the desk is the slowest part of most departures.

Seats, upgrades and gate offers

Seat selection is a paid extra on most fares now. If you have not paid, the system assigns a seat at check-in, and passengers on the same booking are not always seated together.

Occasionally an airline offers a cheap upgrade at check-in or the gate. These are genuine, but the price is set to fill the cabin rather than to be a bargain, and the offer disappears once the flight closes.

A short pre-security routine

Before you walk toward security, do a thirty second pass:

• Boarding pass accessible on the phone and in your pocket, not buried
• Passport in the same place it will be in for the next four hours
• Liquids bag near the top of the carry-on
• Laptop in the sleeve you can pull from without unpacking

Then head to the checkpoint. Our airport security guide covers what happens on the other side.