THAI Smile Airways provide various methods to cancel their flight ticket. You can cancel your tickets online and offline basic. You can call airlines to THAI Smile Airways Customer Service 1-800-364-9405 and request for refund. The airport ticket counter is also another place to cancel your flight ticket. But THAI Smile Airways official site is the best place to cancel a flight ticket. If you do not know the process of how to cancel THAI Smile Airways flights online then you can contact THAI Smile Airways Cancellation Policy 1-800-364-9405 anytime and THAI Smile Airways Live Person are there to help you 24*7.