Airlines

There are quite a few domestic airlines available in Thailand, here are a few with links included. Note that buying from the Internet is NOT always cheaper, check with a travel agent first.

One2Go - Book online or with travel agent

Nok Air - Can only book with a Thai credit card, or use travel agent or pay via 711 store

Air Asia - Tickets also available via travel agents as well as online (check bagage limit)

Thai Air - Tickets are usually cheaper via travel agent (promotion)

Bangkok Air - Book online or with travel agent