** extracted directly from Ask Asia website **
After performing Self check-in via Web/Mobile/Kiosk passengers are allowed to do the following changes to their bookings:
1. Baggage supersize ( you may purchase/upgrade baggage up to 4 hours to departure time.)
2. Sports Equipment Fee ( should you decide that you would be travelling with sports equipment.)
3. Purchase or change meals ( you may add and change meals up to 24 hours to departure time)
4. Purchase Comfort Kit ( you may purchase/add this up to 24 hours to departure time)
5. Insurance ( you can only purchase, but can't change)
6. Skybus ( you may purchase up to 48 hours before departure time )
7. Tune Talk ( you may purchase up to 48 hours before departure time )
8. Seat Assignment ( you may prebook seat up to 4 hours to departure time)
9. Change flight time/date only (up to 4 hours for flight number beginning with I5 and up to 48 hours for all other flights before original departure time) - Go to Manage My Booking and Click on Change/Upgrade Flight.