Airline check-in and seat selection

Online check-in for international flights, particularly with Turkish Airlines departing from Istanbul, may involve charges for seat selection. Even after automatic seat assignment during online registration, changing the seat typically incurs a fee. This contrasts with practices of some Russian airlines where seat changes during online check-in are often free.

For Flyone flights departing from Istanbul Airport (IST), online check-in is generally available starting 12 hours before departure and closes 4 hours prior. In-person check-in at the airport may incur fees. Some unconfirmed reports suggest check-in might be possible in the transit zone.

For Aeroflot flights from the new Istanbul Airport, check the airport's application for check-in sector information, typically ranging from M to S. Aeroflot flights have been observed in sector R. Online baggage check-in is not available; proceed to the check-in counters once they are open.

For Transavia flights, including the Istanbul to Paris route, advance seat selection during online check-in often incurs a fee. This is a common practice for many airlines, especially low-cost carriers. While you can typically still check in at the airport for free, your seat will be assigned randomly. Be aware that some airlines may charge a fee for airport check-in itself, so it's advisable to confirm the specific policies on the Transavia website or be prepared for assigned seating upon arrival.

AJet and similar low-cost carriers define baggage dimensions strictly (e.g., 40x30x15 cm per side). Any deviation risks rejection at the gate. Seat selection is typically a paid add-on. Automatic seat assignment during online check-in does not guarantee adjacent seating for passengers on the same booking. To ensure sitting together, passengers must purchase seat selection in advance.