Major domestic routes include Bangkok to Chiang Mai (1 hour), Bangkok to Phuket (1.5 hours), Bangkok to Krabi (1.5 hours), and Bangkok to Koh Samui (1 hour). Multiple airlines operate these routes, including Thai Airways, Bangkok Airways, Thai AirAsia, and Thai Lion Air.
Bangkok Airways operates exclusive routes to Koh Samui, providing the only direct flights to this island destination. While prices may be higher, the convenience of avoiding lengthy ferry transfers makes it worthwhile for time-conscious travelers.
In 2025, Thailand launched a program offering international visitors free domestic flights to encourage exploration of secondary destinations. This program, running through December 2025, provides two complimentary domestic flights when booking through participating airlines.
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