📋 Table of Contents

🏢 1. Two Terminals & the SAT Layout

San Antonio International sits about 8 miles north of downtown, off US-281 and Loop 410 — close enough that the approach takes you over the city rather than over an hour of exurb. There are two passenger terminals, Terminal A and Terminal B, joined airside so you can walk between gates without re-clearing security. Terminal A is the older of the two; Terminal B opened in 2010 and holds the newer concessions and the United Club.

The airport handles roughly 165 flights a day to about 107 destinations, operated by some five dozen airlines once you count regional affiliates. That makes SAT a busy domestic airport with a thin but real international layer — 92-odd domestic routes against around 15 international ones, almost all of them to Mexico.

The thing to know about SAT in 2026 is that it is a construction site. The Elevate SAT capital program — a roughly $1.68 billion rebuild — has a new Terminal C rising on the east side, an 850,000-square-foot building with up to 18 domestic and international gates, on schedule to open in the second quarter of 2028. Terminal C lifts the airport from 27 gates to about 40 and adds a new parking garage; Terminals A and B are being modernized alongside it. In May 2026 the airport landed a further $10 million federal grant toward the work. For now, none of this changes your walk from gate to curb — but expect detours, relocated pickup points, and signage that is newer than the map on your phone.

🛂 2. US Entry: CBP, Global Entry

If you are flying into SAT from within the United States, there is no immigration at all — you walk off the jet bridge straight into the terminal. The border section only matters if you are arriving from abroad, and at SAT “abroad” almost always means Mexico.

The United States runs its own system, and it has not changed shape for 2026 the way the EU’s has.

International arrivals at SAT are processed by US Customs and Border Protection (CBP) at the Federal Inspection Station. Your options for clearing:

• Global Entry — SAT’s CBP office has been a Global Entry enrollment center since 2013, so you can do your in-person interview here. Members use the expedited kiosks on arrival and skip the main queue. The program costs $120 for five years (verify current fee before applying).
• Mobile Passport Control (MPC) — the free CBP app lets eligible US/Canadian travelers and many returning visitors submit their declaration in advance and use a dedicated lane. No cost, no membership.
• Standard CBP — everyone else queues for an officer.

For visitors from abroad, the requirement to get on the plane depends on nationality:

The US equivalent of “pre-travel authorization” is ESTA (for visa-waiver nationals) or a full visa — sort it out weeks ahead, not at the gate.

🚌 3. Getting Downtown: VIA Route 5, Rideshare & the 11-Minute Drive

SAT is genuinely close to the city, which changes the math on everything below. The driving distance from the airport to the River Walk is 9 miles and about 11 minutes in light traffic.

VIA Metropolitan Transit — Route 5 (the downtown bus). This is the public option and it is cheap. Route 5 runs to downtown in about 30 minutes for a $1.30 one-way fare; a $2.75 day pass covers unlimited rides and is worth it the moment you make one transfer. The bus stop is on the Lower Roadway (Arrivals/Baggage level), across the marked crosswalk to the outer curb, at the far west end of Terminal B. Service runs daily, though frequency thins on evenings and weekends (verify the live schedule before you rely on a late run). Don’t confuse it with Route 7, the Stone Oak Express — that one runs north to a Park & Ride, not downtown, and costs $2.60.

Rideshare and taxi. Uber and Lyft work normally here; a taxi to the River Walk runs roughly $30–40 and takes 11–20 minutes depending on traffic. Rideshare pickup is at a designated zone on the lower level — follow the app and the signs, which may have moved because of the Terminal C construction.

The trap to avoid: the bureau-de-change desk and any “airport shuttle” tout who quotes you a flat downtown rate that sits north of $40. With a 9-mile hop and metered rideshare, you never need to pay an unmarked operator a premium. A future note: VIA’s planned Green Line advanced-rapid-transit corridor is designed to connect the airport to downtown on a faster frequency, but it is not operating yet — don’t plan around it.

🛋️ 4. Lounges: United Club, the USO & the Priority Pass Gap

SAT is a small-lounge airport, and the single most useful fact here is a negative one: there is no Priority Pass lounge at San Antonio. If your lounge access runs through Priority Pass, LoungeKey or DragonPass, it buys you nothing airside at SAT in 2026. Some travelers offset this with the Priority Pass dining credit at a participating restaurant where offered — check your app for current SAT participants before counting on it.

United Club (Terminal B). The one traditional airline lounge, located between Gates B3 and B5. It has the usual complimentary food, bar and Wi-Fi. A single-visit day pass runs about $59 (verify before travel), or it’s free with United Club membership and eligible premium-cabin or card tiers.

USO Lounge. On the lower level of Terminal B by the baggage carousels, free to active military and their families. Not a pay lounge — but if you qualify, it’s the most comfortable seat in the building.

If you hold a Delta or American lounge membership, note that neither carrier operates a Sky Club or Admirals Club at SAT — so a connection here is gate-seating, not lounge time, unless you’re flying United.

🌮 5. What to Eat: Breakfast Tacos, Puffy Tacos & Tex-Mex

San Antonio takes its food seriously, and the city’s defining dish is the breakfast taco — egg, bean, potato, bacon or chorizo folded into a flour tortilla, eaten before 9am and argued about endlessly. The other local signature is the puffy taco, where the tortilla is fried so it balloons, then filled. Neither is airport food in its best form, but both are reasons to get downtown.

Beyond the tacos, the regional table is Tex-Mex and Northern Mexican: barbacoa (slow-cooked, traditionally weekend morning food), cabrito (roast kid goat), enchiladas, and the kind of margarita that downtown bars build their reputation on. The Pearl — a redeveloped brewery complex north of downtown — runs a weekend farmers market and a cluster of well-regarded restaurants if your layover is long enough to reach it.

Inside the terminals, concessions lean toward local Tex-Mex and Texas chains alongside the standard national names. Hours track the flight schedule, so an early Southwest departure may beat the kitchens opening — carry something if your flight is the day’s first bank.

💡 6. Insider: The River Walk, the Alamo & a Layover That Actually Works

Most US airports are not layover destinations. SAT is the exception, because the city’s two headline sights sit a 9-mile, 11-minute drive from the terminal and one mile from each other.

The River Walk (Paseo del Río) is a network of walkways one storey below street level, running along the San Antonio River through downtown, lined with bars and restaurants and worked by narrated electric barge tours. It is touristy in the stretch by the Shops at Rivercenter and quieter the further you walk toward the King William historic district or north toward the Pearl. The barge tour is the efficient way to see the central loop if your time is tight.

The Alamo sits in Alamo Plaza, one mile from the central River Walk — the 18th-century Spanish mission and 1836 battle site, now a museum, free to enter (timed tickets for the church/shrine; reserve ahead in peak season). Around it: La Villita (a historic arts village), HemisFair Park with the Tower of the Americas, and a serious museum cluster including the Briscoe Western Art Museum and the San Antonio Museum of Art.

Does a layover work? Yes, more cleanly than at almost any comparable US airport. The honest math:

• Door-to-River-Walk: ~15–20 minutes by rideshare each way (the 11-minute drive plus pickup wait), or ~30 minutes each way on VIA Route 5.
• Return-security buffer: SAT is a domestic airport with generally short TSA lines, but budget 90 minutes before your flight to be safe.
• The call: with a 4-hour connection, allow ~40–60 minutes of round-trip transit and 90 minutes for return security, and you still have a usable 90 minutes downtown — enough for a River Walk loop and a quick look at the Alamo. With 3 hours or less, stay in the terminal. With 5+ hours, you can eat properly downtown and feel unhurried.

If you only have terminal time, the airport itself isn’t a sight — but it’s calm, walkable, and the construction noise is mostly outside the secure zone.

❓ Frequently Asked Questions

📊 2026 Summary Data Table