Do you know about the Swiss Airlines cancellation policy? You booked your ticket with Swiss Airlines if you don’t want to travel. If you change your plan, that means you are required to cancel your ticket. If you can cancel your ticket, then some options I prefer are to visit the Swiss Airlines official website or contact the Swiss Airlines customer service number at 1 (833) 626-0737 or 1-888-829-1330 (OTA).