Supported airline
TUIfly online check-in
Flying with TUIfly? 1Checkin checks you in on TUIfly flights (IATA code X3) as soon as online check-in opens and emails you the boarding pass, so you don't have to watch the clock.
Seat selection on TUIfly
TUIfly lets you choose a seat for free at online check-in. 1Checkin picks a seat that matches your saved preference (window, aisle, front of the cabin).
TUIfly check-in FAQ
How does automatic check-in for TUIfly work?
Forward your TUIfly booking confirmation to 1Checkin or add the booking in the app. We check you in as soon as online check-in opens and send the boarding pass to your e-mail.
Can I choose my seat on TUIfly?
TUIfly lets you choose a seat for free at online check-in. 1Checkin picks a seat that matches your saved preference (window, aisle, front of the cabin).
How it works
- Forward your booking confirmation to 1Checkin, or add the booking reference in the app.
- 1Checkin checks you in on TUIfly the second online check-in opens.
- Your boarding pass lands in the app, ready for the airport, even offline.