United Airlines' largest hub. United Airlines operates various routes to airports around the world. Until 2010, it was beloved as the hub of Continental Airlines, and after the merger of United and Continental in 2010, United Airlines naturally inherited the Houston hub. At the same time, it established itself as United Airlines' largest hub, surpassing its headquarters in Chicago.

Houston George Bush Intercontinental Airport (IAH) - Houston - 1

Continental Airlines focused its flights to and from the New York area through its hub in Newark. Therefore, while there were flights from other airlines at JFK and LaGuardia airports, there were no Continental flights. Following the legacy of Continental, United has reduced its presence at JFK and LaGuardia, concentrating more flights at Newark.

Due to the high volume of passengers, long lines can often form at the airport. In such cases, if you pass through the security checkpoint at a neighboring terminal and then return to your original terminal, you can save a significant amount of time. There is a tram on the basement level of each terminal that connects to other terminals. You can board the tram to move to the adjacent terminal, pass through security, and then take the Skytrain back to your original terminal. The tram and Skytrain stop every 1 to 3 minutes.

Location
Located about 37 km (approximately 23 miles) north of downtown Houston
Accessible to the city via taxi, rental car, or shuttle bus

Composed of 5 terminals (A~E), with a train (TRAIN) system connecting the terminals for convenient transfers

Terminal A has the longest history, having been in operation since the airport opened. It is used by American airlines other than United (Delta Airlines, American Airlines, etc.) and Air Canada.

Terminal B is exclusively for United Express, a subsidiary of United Airlines that operates connecting flights to Texas cities and nearby states.

Terminal C is used for United Airlines' domestic flights and is large with good facilities. A statue of former President George Herbert Walker Bush is located in the middle of this terminal.

Terminal D is where all international flights from foreign airlines, except for Air Canada, such as Air France and Turkish Airlines, take off and land.

Terminal E is the most recent terminal, opened in 2002, and is where United Airlines' international flights take off and land.
Exceptionally, United Express exclusively uses Terminal B, while all other terminals (A/C/D/E) are also utilized.