Don Mueang International Airport in the context of "Airport Rail Link (Bangkok)"

Suvarnabhumi Airport (Thai: ท่าอากาศยานสุวรรณภูมิ) (IATA: BKK, ICAO: VTBS) is the main international airport serving Bangkok, the capital city of Thailand. It is one of two airports serving Bangkok, the other being Don Mueang International Airport (DMK). Located mostly in Racha Thewa commune, Bang Phli district, Samut Prakan province, it covers an area of 3,520 ha (35.2 km; 8,700 acres), making it one of the biggest international airports in Southeast Asia, tenth biggest in the world and a regional hub for aviation. It has an Airport Rail Link, an Automated People Mover as well as being located close to Motorway 7.

Tentatively named Nong Nguhao before changing to Suvarnabhumi — a toponym that appears in many ancient Indian literary sources and Buddhist text — Suvarnabhumi is the busiest in the country, ninth busiest airport in Asia, and 20th busiest airport in the world, handling 62,234,693 passengers in 2024. As of 2025, it is served by the most airlines in the world, with 113 airlines operating from the airport.

Udon Thani International Airport (IATA: UTH, ICAO: VTUD) is in the Nong Khon Kwang subdistrict, Mueang Udon Thani district, Udon Thani province in northeastern Thailand. It is approximately 450 kilometres (280 mi) northeast of Bangkok. It currently has domestic flights to and from Bangkok (Suvarnabhumi and Don Mueang), Chiang Mai (on Nok Air), Hat Yai (on Thai Lion Air), Phuket (on Thai AirAsia), Rayong (on Thai AirAsia), and Ubon Ratchathani (on Nok Air). In 2006, the airport had 677,411 passenger movements and 1,558 MT cargo movements. In 2013, the airport handled 1,325,305 passengers. In 2015, it handled 2,213,689 passengers and 3,678 tonnes of freight. It has been managed by the Department of Airports (DOA).

Udon Thani Airport is the DOA's moneymaker, with profits reaching 100 million baht a year. This airport was scheduled to be transferred to Airports of Thailand PCL (AOT) in the first half of 2023.