THIRUVANANTHAPURAM: Owing to operational reasons, Air-India flight AI 668 from Thiruvananthapuram to Mumbai and AI 667 from Mumbai to Thiruvananthapuram on the following Saturdays have been rescheduled. AI 667 Mumbai-Thiruvananthapuram on February 25, March 3, 10 and 17 (Departure: 0530 hrs - Arrival: 0730 hrs). AI 668 - Thiruvananthapuram-Mumbai on the same days (Departure-0805 hrs - Arrival 1005 hrs, said a press release.