Actually, taking equally into account costs, connections and comfort provided, the kingdom has one of the best transportation systems in the world. Those who prefer to fly find good connections between Bangkok and the most important provincial cities. Air travel is exceptionally cheap by international standards.
Railways connect Bangkok with the North, the Northeast, the East Coast and the South.
Rail travel is cheap, and the service is excellent. A very dense network of bus routes makes it possible to reach easily every corner of the country. Buses are more comfortable than what is the case in Europe. Usually, a stewardess is on board, providing a service comparable to the one internationally common on aircraft.