Singapore Airlines has a cancellation policy that depends on the type of ticket you purchased, how you booked it, and the reason for the cancellation. If you book a flight directly with Singapore Airlines and cancel within 24 hours of booking, and the flight is scheduled to depart at least seven days later, you are entitled to a full refund with no penalty. This applies to all types of fares as long as these conditions are met. For refundable fares, you can cancel your flight at any time before departure and receive a full refund, though a small administrative fee may sometimes apply. For non-refundable fares, cancellation usually means that only the government taxes and fees are refunded, and the main portion of the fare is not returned unless the airline cancels the flight or there is a significant schedule change. If Singapore Airlines cancels your flight or makes a major change to the schedule, you are entitled to a full refund regardless of the type of fare you purchased. For flights booked with KrisFlyer miles, known as award tickets, you can cancel and get your miles back by paying a redeposit fee, unless the airline cancels the flight, in which case the fee may be waived. For tickets booked through a travel agency or third-party website, you must contact the agent to handle cancellations and refunds, as Singapore Airlines cannot process those directly. The cancellation policy also varies depending on the fare class. Lite fares are generally not eligible for cancellation, Value and Standard fares may be canceled with a fee, and Flexi fares or premium cabin tickets offer more flexibility, though small fees may still apply. Cancellation fees can range from about one hundred to three hundred US dollars, depending on your cabin class and the rules of your fare. If you miss your flight and do not cancel ahead of time, a no-show fee may also apply. Refunds for eligible cancellations are usually processed within one to three weeks, although your bank may take longer to reflect the payment. If your booking was made directly on the Singapore Airlines website or app, you can cancel it online. For bookings made through other channels, such as travel agencies, you must request cancellation through that same channel. In cases of emergencies or special situations, such as illness or death in the family, Singapore Airlines may waive cancellation fees if proper documentation is provided. In summary, Singapore Airlines provides flexible options based on your ticket type. Refundable fares allow full refunds, non-refundable fares may offer partial refunds, and all tickets may qualify for a full refund if the airline cancels or changes the flight significantly. The 24-hour cancellation policy applies to all fares for U.S.-bound flights if the flight is booked at least seven days in advance. Passengers should always check fare rules and contact the airline or booking agent if uncertain.