U-Tapao International Airport

U-Tapao was built by the United States to accommodate B-52 bombers for missions in Vietnam, Laos, and Cambodia during the Vietnam War.[9] Construction began on 15 October 1965 and was completed on 2 June 1966.[10] U-Tapao was the primary Southeast Asian airfield for US Air Force B-52 Stratofortress bombers, called "Bee-hasip-sawng" (B-52) by the local Thais.[11] U-Tapao was a front-line base along with the other US bases at Korat, Udon, Ubon, Nakhon Phanom, and Takhli. The USAF B-52s made regular sorties over North Vietnam and North Vietnamese-controlled areas in Laos, carrying an average of 108 500-pound and 750-pound bombs per mission. U-Tapao was a regular stop on Bob Hope's Christmas shows for the troops.[12]

With the temporary closure of Suvarnabhumi Airport and Don Mueang Airport in late November 2008 because they had been occupied by anti-government protestors, U-Tapao became for a time Thailand's main supplementary international gateway. Many airlines arranged special flights to and from U-Tapao to ferry international passengers stranded by the closure of the Suvarnabhumi Airport.[13][14][15][16][17] Several governments including Italy, Macau and Spain also sent chartered flights to evacuate residents.

As many as 100,000 passengers were stranded in Thailand until early December. Although its runway can accommodate large aircraft, U-Tapao's terminals are not designed to handle more than a few flights a day. Travellers were subject to many hardships, and as the security was not up-to-date, some US-bound flights were diverted to Japan and their passengers required to go through a supplementary security check before continuing.[15]

As Bangkok's two international airports are operating beyond capacity, the government intends to turn U-Tapao into a third major destination for airlines. A new second terminal, which will increase airport capacity from 800,000 to three million persons per year. Terminal 2 was partially opened in November 2018 and was officially opened in February 2019.[18]

There are also 41 direct flights landing from China weekly[19] with more airlines scheduled to announce soon. Airport director, Rear Adm Worapol Tongpricha, said the 620 million baht terminal is the start of a three-year, first-phase development. In the second phase, the government will boost the capacity further to 15 million people.[20]