When should I cancel a Singapore Airlines flight to avoid fees?

Singapore Airlines allows you to cancel your flight within 24 hours of booking for a full refund. After this grace period, cancellation fees vary based on the fare class. The earlier you cancel before the flight, the better the chances of minimizing costs. Check your specific ticket rules to avoid surprises. Ready to modify your booking or request a refund? Contact Singapore Airlines’ support or visit their website to manage your travel plans seamlessly.

Source: https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZHWuFSAX/how-much-notice-to-cancel-a-singapore-airlines-flight?language=en_US