Booked Through Expedia, Skyscanner or Booking.com? Here’s How to Actually Get Help With Online Check-In

If you’ve ever booked a flight through a comparison site or online travel agent (OTA) — Expedia, Skyscanner, Booking.com, eDreams and the like — you’ll know the drill: you find a good fare, hand over your card details, and get a booking confirmation. Simple. Until, a day or two before you fly, you realise you need to check in online and have no idea where to start, or the OTA’s app just spins on “processing.”

This isn’t a rare problem. It’s one of the most common reasons people search for help the night before a flight, and it catches out OTA customers far more often than people who booked directly with an airline.

Why Online Check-In Catches So Many Travellers Out

Online check-in windows are narrow and airline-specific — usually somewhere between 24 and 48 hours before departure — and they’re easy to miss if you’re juggling packing, work and everything else in the run-up to a trip. Miss it, and you’re checking in at the airport instead, which on a busy morning can mean a much longer queue and, on some airlines, an automatically assigned seat rather than one you’d have chosen yourself.

The Real Cost of Missing Your Check-In Window

Beyond the extra time at the airport, missing online check-in has knock-on costs. Several airlines charge a fee for checking in at the desk instead of online. Seats not selected in advance are usually assigned last, which on a full flight often means whatever’s left — typically middle seats, or seats split away from anyone you’re travelling with. And on some low-cost carriers, failing to check in online before arriving at the airport can trigger a much steeper “airport check-in” charge than the airline advertises anywhere near the booking flow.

Why Your OTA Usually Can’t Help

This is the part that catches people out. An OTA is a marketplace — it sells you the ticket, but once it’s issued, the booking sits with the airline, not the OTA. Most OTA “support” teams can’t actually perform your check-in themselves; at best they can point you to the airline’s website, and at worst you’re stuck in a call queue reading back a booking reference to someone reading from a script. That’s not a criticism of any one OTA — it’s just how the ticketing chain works, and it’s exactly the gap that catches travellers out at the worst possible time.

When Different Airlines Actually Open Check-In

Windows vary by airline and route, but as a general guide:

• Most short-haul European and UK budget carriers: 24–30 hours before departure
• Most full-service short and medium-haul airlines: 24–48 hours before departure
• Many long-haul international carriers: 24–48 hours, though a handful open earlier for certain cabins or loyalty tiers
• Codeshare and connecting itineraries: sometimes the earliest of the two check-in windows applies, sometimes the latest — worth checking rather than assuming

How to Protect Yourself, Whoever You Booked Through

A few habits go a long way regardless of where you booked:

• Set a reminder for the moment check-in opens, not the night before — windows can close again for certain fare types if you leave it too late
• Check in via the airline’s own app or website, not just the OTA’s — it’s usually faster and gives you the full seat map
• Have your booking reference, passport details and any visa/entry requirements ready before you start
• If you’re travelling with others, check in for everyone in the same session so the system doesn’t split you up

If you’d rather not be the one watching the clock, this is exactly what our Online Check-In Help service is for — we track your airline’s check-in window and complete it for every passenger the moment it opens, whether you booked with us or through any OTA. Boarding passes land in your inbox, and you don’t have to think about it again.