Everything you need to navigate San Antonio: the official terminal map link, what airlines fly from each concourse, how to move between terminals, and gate-finding tips that save you backtracking. Verify your specific gate on your boarding pass — assignments change.

The SAT airport authority publishes the most up-to-date map on its official website. Use the link below before you travel so you know the terminal layout and gate locations before you clear security.
Official map
San Antonio official terminal map — airport authority website
Maps are updated when terminals are renovated or new concourses open. Terminal 5 at LAX, for example, has been closed since October 2025 for reconstruction — always confirm your terminal from your boarding pass rather than relying on a saved map.
Here is what each terminal or concourse at SAT handles — which airlines fly from it, the gate range, and key amenities to know before you go.
Serves Aeromexico, Air Canada, Alaska Airlines, American Airlines, Breeze Airways, Delta Air Lines, and Frontier Airlines. All international service departs from Terminal A. Connected to Terminal B via an upper-level pedestrian walkway. Separate security checkpoint with CT scanners and PreCheck (open 3:30 AM–6 PM). CLEAR available.
Serves Alaska Airlines, Southwest Airlines, and United Airlines. Southwest is the dominant carrier. Separate security checkpoint with CT scanners and PreCheck (open 3:30 AM–5 PM). CLEAR available.
Two terminals connected on the upper departures level via a pedestrian walkway. Each terminal has its own security checkpoint — passengers must enter through the checkpoint for their airline's terminal.
Timing tip
Always allow 15–30 minutes for any inter-terminal transfer at SAT — wait times for people-movers, buses, or security re-screening add up faster than the physical distance suggests. Build the buffer into your Leave-By time, not your gate arrival time.
CT scanners at both Terminal A and Terminal B checkpoints mean you do not need to remove laptops or tablets from your carry-on bag — keep it packed. All international flights depart from Terminal A; domestic-only travelers on Southwest or United go directly to Terminal B. With PreCheck, 90 minutes before departure is sufficient; without it, plan 2 hours, especially during the 6–9 AM rush.
A few habits that prevent last-minute sprints:
Experienced travellers at SAT use a short checklist every time:
The official San Antonio terminal map is on the airport authority website at https://www.sanantonio.gov/SAT/AttheAirport/TerminalMaps.aspx. Maps are updated when new gates or concourses open; always verify your specific gate on your boarding pass.
Two terminals connected on the upper departures level via a pedestrian walkway. Each terminal has its own security checkpoint — passengers must enter through the checkpoint for their airline's terminal.
CT scanners at both Terminal A and Terminal B checkpoints mean you do not need to remove laptops or tablets from your carry-on bag — keep it packed. All international flights depart from Terminal A; domestic-only travelers on Southwest or United go directly to Terminal B. With PreCheck, 90 minutes before departure is sufficient; without it, plan 2 hours, especially during the 6–9 AM rush. Your boarding pass shows the exact gate. Open your airline app about two hours before departure — gate assignments sometimes change after check-in closes. Look for departure boards throughout the terminal for real-time gate information.
Use the official interactive map at https://www.sanantonio.gov/SAT/AttheAirport/TerminalMaps.aspx before you arrive to familiarise yourself with the layout. CT scanners at both Terminal A and Terminal B checkpoints mean you do not need to remove laptops or tablets from your carry-on bag — keep it packed. All international flights depart from Terminal A; domestic-only travelers on Southwest or United go directly to Terminal B. With PreCheck, 90 minutes before departure is sufficient; without it, plan 2 hours, especially during the 6–9 AM rush.
Terminal A: Serves Aeromexico, Air Canada, Alaska Airlines, American Airlines, Breeze Airways, Delta Air Lines, and Frontier Airlines. All international service departs from Terminal A. Connected to Terminal B via an upper-level pedestrian walkway. Separate security checkpoint with CT scanners and PreCheck (open 3:30 AM–6 PM). CLEAR available. Terminal B: Serves Alaska Airlines, Southwest Airlines, and United Airlines. Southwest is the dominant carrier. Separate security checkpoint with CT scanners and PreCheck (open 3:30 AM–5 PM). CLEAR available.
Leave-By calculator
The TSA Wait Times Leave-By calculator folds the live SAT security wait, your drive time, and terminal navigation into one exact time to leave home — so you reach your gate without guessing.
See also: Live SAT TSA wait times · SAT terminals guide · SAT security tips