如果是土耳其國內線,建議可以先尋求改簽:http://www.turkishairlines.com/en-int/travel-information/legal-notice/terms-amp-conditions/ticket-reissue;如果是國際線,見2. Cancellation/Refund for International Flights:http://www.turkishairlines.com/en-int/travel-information/legal-notice/terms-amp-conditions/cancellation-refund
土耳其航空公司的销售办事处在中国或香港有么?