Changing a Singapore Airlines seat after you have paid or checked in
Online seat changes are permitted until 1.5 hours before departure, and a successful change requires a new boarding pass. A previous seat payment is not automatically a credit. On the same unchanged flight, Singapore’s advance-seat terms say that an earlier seat-selection fee is neither refunded nor applied toward a new selection. Read the new seat’s price before confirming instead of assuming you will pay only a difference. Changing the flight is a different situation from changing seats on the same flight. Where the flight changes but the destination stays the same, Singapore describes requesting a transfer of the original seat type through its contact center, subject to conditions. Keep the original receipt and identify which of these situations applies before asking for help.

Important unknowns
- Replacement availability and transfer eligibility depend on the booking.
- Live canonical owner and nearest-page content are UNKNOWN because the sitemap index could not be retrieved.
Sources and last checked
- Seat selectionhttps://www.singaporeair.com/en_UK/us/travel-info/requests/seats/
- Checking in: frequently asked questionshttps://www.singaporeair.com/en_UK/sg/faq/check-in/checking-in/
- Terms and conditions for advanced seat selectionhttps://www.singaporeair.com/en_UK/us/global_footer/Advance-Seat-Selection-TC/