Online Procedure:
Passengers will get the acknowledgment about the cancellation on their registered email address.
Offline Procedure:
Passengers need to submit a refund request application from the official website of Singapore Airlines so just visit the website.
The Singapore Airlines cancellation charges vary from passenger to passenger where Economy class passenger needs to pay 100 US dollars and premium class passenger have to pay 200 to 300 US dollars as a Singapore Airlines cancellation fee but if any passenger avails the Kris flyer membership program then, they have to pay just 50 to 75 dollars.