San Antonio International Airport (SAT) is the primary commercial airport serving San Antonio, Texas, and South Texas — the nation's seventh-largest city by population and one of its most visited tourist destinations. Located approximately 8 miles north of downtown San Antonio, SAT serves a metropolitan area anchored by the largest concentration of military bases in the United States, the world-famous San Antonio River Walk, the Alamo, and a growing healthcare and technology economy. The airport provides domestic and limited international service for a rapidly growing Sun Belt city.
San Antonio International Airport operates two terminal buildings — Terminal A and Terminal B — connected by an enclosed elevated bridge that allows passengers to move between terminals after clearing security. The airport has expanded steadily alongside San Antonio's dramatic population growth, which has made the metro area one of the fastest-growing major cities in the United States.
San Antonio's unique identity as both a major tourist destination (the River Walk, the Alamo, and SeaWorld and Six Flags draw millions of visitors annually) and the military capital of the United States creates a distinctive mix of passenger types at SAT. Military personnel, veterans, tourists, and business travelers share the terminal, reflecting San Antonio's dual nature as a leisure destination and a serious military city.
SAT serves approximately 10 million passengers annually and provides nonstop service to domestic cities across the United States and limited international destinations. American Airlines is the largest carrier and American's hub at Dallas/Fort Worth (DFW) provides SAT passengers with extensive international connection options just 45 minutes away.
San Antonio's aviation history dates to Kelly Air Force Base, established in 1917 as one of the first military aviation training facilities in the United States. Commercial aviation in San Antonio began in the 1920s at a site near downtown before the airport moved to its current location.
The modern San Antonio International Airport has expanded through successive terminal projects — Terminal 1 (now Terminal A) and Terminal 2 (now Terminal B) were developed across different eras and connected to create the current two-terminal complex. San Antonio's population growth — the city has grown from approximately 1 million to nearly 2.5 million in the metro area over the past three decades — has driven consistent expansion at SAT.
SAT has two terminal buildings connected by an enclosed elevated walkway on the airside. Terminal A handles American Airlines and some other carriers. Terminal B handles Southwest Airlines, Delta Air Lines, United Airlines, Frontier Airlines, and additional carriers. Passengers can move between terminals post-security via the connecting bridge.
Both terminals have check-in, security, and baggage claim functions. Terminal A has American Airlines' facilities concentrated on the south concourse. Terminal B has a broader mix of carriers. The ground transportation area serves both terminals from a shared roadway.
American Airlines is the largest carrier at SAT, providing domestic service and connections through its Dallas/Fort Worth (DFW) hub — just 45 minutes away by air. Southwest Airlines operates high-frequency domestic service from Terminal B. Delta Air Lines connects SAT to Atlanta (ATL). United Airlines connects SAT to Houston (IAH) and Chicago (ORD). Frontier Airlines and Spirit Airlines provide low-cost options.
International service at SAT is limited but growing. Air Canada serves Toronto. Volaris, Aeromexico, and other carriers serve Mexican destinations including Mexico City, Monterrey, and Cancún — reflecting San Antonio's strong cultural and family ties to Mexico. SAT provides nonstop service to approximately 45–50 destinations.
SAT's terminal amenities reflect San Antonio's Tex-Mex and Texas cultural identity, with local San Antonio dining concepts represented in both terminals. Texas barbecue, Tex-Mex, and local food brands are present alongside national chains. The airport features public art reflecting San Antonio's Spanish colonial and Texas Republic heritage.
Free Wi-Fi is available throughout. The terminals have been progressively updated, though both retain some of the characteristics of their different construction eras. Nursing rooms, pet relief areas, and interfaith spaces are accessible across the airport.
SAT does not have a direct rail connection to downtown San Antonio. VIA Metropolitan Transit provides bus service connecting the airport to the regional transit network. Rideshare services are the dominant option for most travelers. Taxis serve the ground level. Rental car companies operate from the airport campus.
The airport is accessible via US-281 and Loop 410. Downtown San Antonio is approximately 15–20 minutes by car under normal traffic conditions. The River Walk and downtown hotels are served by rideshare from the airport.
SAT provides parking in garages adjacent to both terminals and in economy surface lots with shuttle service. Rates are competitive for a major Texas airport. Economy lots offer lower rates with shuttle connections to both terminals. Parking demand peaks during spring break, summer vacation season, and during major San Antonio events such as the San Antonio Stock Show & Rodeo (February) and Fiesta San Antonio (April).
The connecting bridge between Terminal A and Terminal B at SAT is post-security — you can move between terminals without clearing security again. However, check-in and baggage must be done at your airline's designated terminal. Allow 90 minutes before departure for a comfortable experience; San Antonio's security lines can be longer than expected for a mid-size airport due to high leisure and military travel volumes.
Mexico connections are convenient from SAT — service to Monterrey, Mexico City, Cancún, and other Mexican cities is available on carriers including Aeromexico, Volaris, and Interjet. For travel to Mexico, SAT is often a better choice than connecting through DFW.
San Antonio International Airport is the aviation gateway for one of America's most distinctive metropolitan economies. San Antonio's military sector — home to Fort Sam Houston, Randolph Air Force Base, Lackland Air Force Base, and Joint Base San Antonio — generates enormous travel demand from active-duty personnel, contractors, veterans, and Department of Defense civilian employees. The tourism economy (River Walk, the Alamo, Six Flags Fiesta Texas) brings millions of leisure visitors. The healthcare sector, led by UT Health San Antonio and University Hospital, drives medical travel.
SAT's growing Mexico connections reflect San Antonio's deep cultural ties to northern Mexico and its role as a binational economic and cultural hub on the Texas-Mexico corridor.
SAT is pursuing terminal expansion and modernization projects to accommodate San Antonio's continued rapid population growth. Plans include additional gate capacity and improved terminal facilities. International service expansion — particularly to additional Mexican and potentially Central American destinations — is a strategic priority. Transit connectivity improvements, including potential enhanced bus connections to VIA's rapid transit network, are under discussion.
SAT is a medium hub airport serving as a regional gateway in South Texas, connecting one of America's largest and fastest-growing cities to domestic and international destinations with a particular focus on military travel and Mexico connectivity.
There are no Airports within approximately 60 miles of San Antonio International Airport that may provide additional scheduled commercial or regional access.
San Antonio International Airport is a mid-size Texas airport serving one of America's most distinctive and rapidly growing cities — a place where military heritage, Spanish colonial history, Mexican cultural ties, and Sun Belt growth create an airport passenger mix unlike any other in the country. For travelers heading to the River Walk, the Alamo, or one of San Antonio's military institutions, SAT is the gateway to a city with a story unlike any other in the United States.
Yes — Terminal A and Terminal B are connected by an enclosed elevated bridge on the airside (post-security). Passengers can move between terminals without clearing security again. However, check-in and baggage drop must be at your airline's designated terminal.
San Antonio hosts the largest concentration of military bases in the United States, including Fort Sam Houston, Lackland Air Force Base, Randolph Air Force Base, and Joint Base San Antonio. The military presence is a defining feature of San Antonio's economy and culture.
Yes — SAT has direct service to several Mexican cities including Monterrey, Mexico City, Cancún, and others. Aeromexico, Volaris, and other carriers serve these routes, reflecting San Antonio's strong cultural and family ties to northern Mexico.
American is the largest carrier. Southwest, Delta, United, Frontier, and Spirit also serve SAT. International service includes Mexico routes and Air Canada's Toronto service.
For the most current flight schedules, parking availability, terminal maps, and ground transportation updates, visit the official San Antonio International Airport website.
San Antonio International Airport Official Site