SAT averages 260 daily departures and arrivals at its 27 gates, which serve 14 airlines flying non-stop to 45 destinations in the US and Mexico.

A large portion of the northeast section of the airport was pressed into federal government service.

This area was known as Alamo Field and was used by the United States Army Air Forces as a training base.

At the end of World War II the Alamo Field portion of the airport was no longer needed by the military and was turned over to the City of San Antonio for civil use.

For HemisFair '68, a new satellite concourse was built, containing eight jet bridge gates and passenger waiting areas.

In June 1971, the airport was one of three original destinations along with Dallas and Houston for new startup Southwest Airlines.

Work began in early 2017 on the 1.8 million square feet facility, which was planned to house up to 14 rental car brands and short-term public parking.

[8] The airport received its first nonstop flight to Europe in May 2024, with German airline Condor launching seasonal service to Frankfurt.

On June 18, 2014, a $35.6 million renovation was completed for this terminal, with the most visible improvements to passengers being new terrazzo floors, updated food courts, and new signage.

In 2022 construction began to add two more gates to Terminal B in order to better accommodate increasing passenger numbers.

[16] The airport has a 1.8 million square foot consolidated rental car facility that was completed in January 2018.

U.S. 281 provides quick drives (under 15 minutes in normal traffic) to Downtown and northern San Antonio.

[39] ST Engineering maintains a large presence at the airport knows as SAA (San Antonio Aerospace) employing around 1,000 staff.

The facilities were previously owned by Dee Howard Aircraft Maintenance and were purchased during the company's bankruptcy in 2002.

The facility provides heavy maintenance and other services for numerous passenger and cargo airlines along with aircraft leasing operations.

The most recent addition being a passenger to cargo conversion line for Airbus A320 series family.