In 1960 air service by Thai Airways to several northeastern towns was inaugurated.
By 1963 there were regular flights between Bangkok and Nakhon Phanom, Ubon, Khon Kaen, and Udon.

There are airports at Khorat (at the present time no scheduled services due to its proximity to Bangkok making air service difficult to justify financially), Khon Kaen (domestic), Ubon Ratchathani (domestic), Udon Thani (international), Nakhon Phanom (domestic, scheduled services), Sakon Nakhon (domestic, scheduled services), Roi Et (domestic, scheduled services), Buriram (domestic, scheduled services) and Loei (domestic, scheduled services).

Domestic air travel between the capital and the region is well developed, and has become a viable alternative to rail, long-distance bus, and self-driving.
Fares are cheap by foreign standards, and Udon and Khon Kaen which both opened brand new airport terminals in 2005 and 2006 respectively, are served by many daily flights and also have routes connecting other major destinations in Thailand with some companies operating wide-bodied aircraft.
Most domestic flights to and from Bangkok operate to and from Don Muang, the original Bangkok international airport, while Thai Airways flights serve Bangkok International Airport at  Suvarnabhumi.
In 1960 air service by Thai Airways to several northeastern towns was inaugurated. By 1963 there were regular flights between Bangkok and Nakhon Phanom, Ubon, Khon Kaen, and Udon.
There are airports at Khorat (at the present time no scheduled services due to its proximity to Bangkok making air service difficult to justify financially), Khon Kaen (domestic), Ubon Ratchathani (domestic), Udon Thani (international), Nakhon Phanom (domestic, scheduled services), Sakon Nakhon (domestic, scheduled services), Roi Et (domestic, scheduled services), Buriram (domestic, scheduled services) and Loei (domestic, scheduled services).
Domestic air travel between the capital and the region is well developed, and has become a viable alternative to rail, long-distance bus, and self-driving. Fares are cheap by foreign standards, and Udon and Khon Kaen which both opened brand new airport terminals in 2005 and 2006 respectively, are served by many daily flights and also have routes connecting other major destinations in Thailand with some companies operating wide-bodied aircraft. Most domestic flights to and from Bangkok operate to and from Don Muang, the original Bangkok international airport, while Thai Airways flights serve Bangkok International Airport at  Suvarnabhumi.
Isan