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. As well Thai Airport Limited has predicted that there will be a number of passengers at Suvarnabhumi airport increased more than 56 million people and has more than 3 flights and flights in the year 2558 (2015) airlines in ASEAN would like to come in and compete Thai scramble and intense competition occurred in Thai's flight business. The country is Thai investment attracting factors in tourism between the countries with highest growth trends. With the Thai tourism authority tourism action plan has in recent years, 2557 (2014) to attract tourists through the Thai charm. In addition, Thai national geographic advantage because it can be an airfreight hub (Hub) in Southeast Asia make passengers can travel to various areas in ASEAN has more facilities that will make your Thai airlines have flights and increase continuously.