Change Singapore Arlines Flight Firstly, to retrieve your booking, locate the confirmation number in your booking email and input it on Singaporeairlines.com. Alternatively, go to your Singapore SkyMiles account’s “My Trips” area and choose the trip you wish to modify.
Then, in the upper-right space, click the red “Edit Flight” icon.
Then the page will offer you the option of changing or canceling your flight. Choose “Start flight change” from the drop-down menu.
This screen change option displays all flights included in a specific ticket; you must check the box next to the flight or flights you want to alter.
To go to the next page, click “Find new flights.”
All of your new travel options will display at this point, and you may pick the trip you want to change, with the money you paid for the previous ticket being added to the new ticket fee. Depending on the kind of ticket you initially bought, you will either receive a refund or an eCredit for the fare difference if you pay the remainder as normal.