No, not all Singapore Airlines economy tickets are refundable; it depends on the specific fare rules you purchased, with some being fully refundable (minus a fee) and others being non-refundable. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For a refund on a non-refundable ticket, you would only receive the refundable portion of the taxes. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) However, you are entitled to a full refund if Singapore Airlines cancels the flight, or if you cancel within 24 hours of booking, provided the flight is at least seven days away.