What to do if e-tickets haven't arrived after paying through an online travel agency and your flight is soon?

When booking through a third-party agency (in this case ClickAvia), tickets sometimes don't arrive by email even 4+ hours after payment, and agency support just tells you to wait. In this situation, don't rely solely on the booking agency's support — contact the airline directly with your payment receipt, especially if departure is only a few hours away.

The airline's website may still show your originally chosen and paid seats as reserved, but during check-in passengers can sometimes be reassigned to different seats without explanation — the old seat is crossed out on the paper ticket and a new one written in by hand, labeled a 'free upgrade'.

One likely reason seats get changed at boarding even with a confirmed paid reservation is overbooking: the airline sold more tickets than available seats, and some passengers get reseated right at the gate.