Don Mueang International Airport (IATA: DMK, ICAO: VTBD) is one of two international airports serving the Bangkok Metropolitan Region, the other one being Suvarnabhumi Airport (BKK). Before Suvarnabhumi opened in 2006, Don Mueang was previously known as Bangkok International Airport.

The airport is considered to be one of the world's oldest international airports and Asia's oldest operating airport. It was officially opened as a Royal Thai Air Force base on 27 March 1914, although it had been in use earlier. Commercial flights began in 1924, making it one of the world's oldest commercial airports. The airport consists of Terminal 1 for international flights and Terminal 2 for domestic flights which are connected by a unique glass exterior elevated walkway. The airport also featured an exterior walkway connected to the Amari hotel. The first commercial flight was an arrival by KLM Royal Dutch Airlines.