International Flights: Information on Advanced Seat Reservation Service
Seats can be reserved from when making a reservation up to the date of departure.
Seats are subject to change without notice due to a change in aircraft or other unavoidable circumstances.
There are restrictions on the number of seats that can be reserved in advance for reasons such as those related to managing the weight of the aircraft. Seats that can be reserved in advance vary depending on the fare. If you cannot reserve a seat in advance, please do so at the airport on the day of departure.