Great sale fare$15one-way
Typical low fare$25–$45one-way
Which airlines fly it cheapest
Thai AirAsia, Nok Air, Thai Lion Air.
The local trick
💡 Or the excellent overnight sleeper train (~$25–35, book 2nd class lower berth).
Corridor intel — Within Southeast Asia
AirAsia, VietJet, Scoot, Cebu Pacific and Lion Air keep intra-SEA fares tiny — but bag fees can double a $30 fare, so pack carry-on. For trips under ~500 km, buses and trains (book on 12Go) are often cheaper, comfier and station-to-station.