Singapore Airlines' cancellation policies allow its passengers to request refunds for canceled flights. The cost of obtaining a refund depends on several factors such as the fare type, the time of cancellation, and any applicable fees or penalties. Generally, Singapore Airlines may impose cancellation fees or deduct a certain amount from the refund to cover administrative costs. However, the exact cost varies case by case. Passengers should refer to the airline's terms and conditions or contact customer service for specific information regarding cancellation fees and refund amounts based on their booking details. If you need any specific assistance, please get in touch with us at +1-888-509-0323.