Seat selection can be made after payment upon receiving the "Final Confirmation" e-mail.
Detailed procedures can be found on skyticket Usage (Japan Domestic Flights)

* Please contact the airline directly if you have any queries within the official website of the airline

1. Log in to "My Page" or "My Reservation(s)" page
   Members           : My Page
   Non-Members   : My Reservation(s)
2. Click on "Select Seats" in the Flight Schedule column and "Select on Airline Website"
3. Copy or memo the "Flight Number" and "Reservation Number" displayed on the screen
4. Select "Proceed to Airline Website"
5. Enter the required information on the reservation confirmation page of each airline and select "Search"
6. Follow the on-screen guidance to make your seat selection