and the private sector estimated to contribute 90 billion baht. As of April 2020, the Don Mueang–Suvarnabhumi–U-Tapao rail connection was still described as is a "proposed railway". It has been envisaged to partly run as a high-speed line. In October 2021, state authorities announced that the link connecting all three airports will be ready in four years. In July 2022, the government announced construction would begin in October 2022, and be competed in 2026. Airport extension Passive provision is being made for an extension of the rail link to a future second terminal at Suvarnabhumi Airport. The Suvarnabhumi second terminal station will be on ground floor before the Suvarnabhumi station that is on underground floor. Gallery See also Mass Rapid Transit Master Plan in Bangkok Metropolitan Region SRT Dark Red Line SRT Light Red Line BTS Skytrain Sukhumvit line Silom line MRT (Bangkok) MRT Blue Line MRT Brown Line MRT Grey Line MRT Light Blue Line MRT Orange Line MRT Pink Line MRT Purple Line MRT Yellow Line Bangkok BRT Notes References External links Airport Rail Link – official website Airport Rail Link, BTS, MRT & BRT network map "2Bangkok Airport Rail thread" Semi-regular updates, articles, pictures and commentary (In English) Guide to the Airport Link For Tourists. Including current timetables and ticket prices. 2010 establishments in Thailand Bangkok Railway lines opened in 2010 Standard gauge railways in Thailand 25 kV AC railway electrification