William P. Hobby Airport is an international airport in Houston, Texas, located 7 miles (11 km) from downtown Houston. Hobby is Houston's oldest commercial airport, and was its primary airport until the Houston Intercontinental Airport, now known as the George Bush Intercontinental Airport, opened in 1969. Hobby was initially closed after the opening of Houston Intercontinental; however, it was re-opened after several years, and became a secondary airport for domestic airline service, and a center for corporate and private aviation.

An IATA airport code, also known as an IATA location identifier, IATA station code, or simply a location identifier, is a three-letter geocode designating many airports and metropolitan areas around the world, defined by the International Air Transport Association (IATA). The characters prominently displayed on baggage tags attached at airport check-in desks are an example of a way these codes are used.