The liberalization of the airspace in 2015 make airline industry faced with severe competition as a from airlines to compete in ASEAN to Thailand .In the past, Thailand allow Airlines only a few lines in domestic service limited route and in the service of the airline to fly over the main route of National Airlines (TG) .And later years 2002 have been relaxed rules in the service of the airline. the aviation business in more competitive but because in 2015 Thailand to step ASEAN economies (AEC) .Which have been agreed in the liberalization policy airspace (Open Skies Policy) add more occasion to the convenience of business of air transport. cooperation under the air transportation with grant carriage .The passenger transport and the freight traffic freedom according to three four and five between cities in the region.