Supported airline
Siam Air online check-in
With 1Checkin you forward your Marathon Airlines (O8) booking once and we check you in automatically the moment online check-in opens, then send you the boarding pass.
Also known as: Siam Air.
Siam Air check-in FAQ
How does automatic check-in for Marathon Airlines work?
Forward your Marathon Airlines 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.
How it works
- Forward your booking confirmation to 1Checkin, or add the booking reference in the app.
- 1Checkin checks you in on Siam Air the second online check-in opens.
- Your boarding pass lands in the app, ready for the airport, even offline.