The most popular airports for Thai Airways are Bangkok Suvarnabhumi, Singapore Changi, and Hong Kong Intl according to our data. Flights to or from any of these airports should be available via Thai Airways year-round.
A flight from Bangkok Suvarnabhumi to Chiang Mai, which has 0 stops, is 217﷼ which is the least expensive round-trip domestic flight that Thai Airways offers. For a one-way domestic Thai Airways flight, the cheapest route is Khon Kaen to Bangkok Suvarnabhumi (0 stops) for 72﷼.
Thai Airways does not have flights from Doha Hamad Intl at the moment. There are scheduled flights with Thai Airways out of Manama Bahrain Intl though (if you don’t mind flying from this airport). Flying with Gulf Air is recommended if you still want to fly from Doha Hamad Intl.