Last Updated on July 18, 2026 by Daniel Globe
American Airlines has served San Francisco International Airport (SFO) for decades, growing alongside the airport into one of its key domestic and international carriers. Today, the airline operates out of Terminal 1 — SFO’s Harvey Milk Terminal — and travelers heading to or from SFO on American should know exactly where to go, what amenities are available, and how to move through the terminal without stress.
Quick Answer
American Airlines operates from Terminal 1 (the Harvey Milk Terminal) at San Francisco International Airport (SFO), using Concourse B, gates B2 through B27. The Admirals Club lounge is located near Gate B13.
American Airlines’ History at SFO
American Airlines has been part of SFO’s growth since the airport’s early decades of commercial aviation, expanding its route network as air travel on the West Coast grew. Over time, the airline broadened its reach from domestic connections into international service, and its fleet and facilities at SFO have been updated repeatedly to keep pace with passenger demand.
Key Takeaways
- American Airlines operates from Terminal 1 (Harvey Milk Terminal) at SFO, not Terminal 2 or Terminal 4.
- Terminal 1 uses Concourse B, with gates numbered B2 to B27.
- The American Airlines Admirals Club lounge is located near Gate B13.
- American serves a wide range of domestic destinations from SFO, including New York, Dallas, and Chicago.
- Terminal 1 connects to other SFO terminals via a secure walkway and the AirTrain.
Terminal Facilities and Amenities
American Airlines operates from Terminal 1 at SFO, using Concourse B for check-in, security, and boarding. Level 2 of the terminal houses the check-in counters, along with Checkpoint B security screening. Passengers with TSA PreCheck or CLEAR membership can use expedited lanes to move through security faster.
Once through security, the concourse offers a mix of dining options, from quick-service counters to sit-down restaurants, along with retail shops for last-minute purchases. American Airlines passengers, along with other oneworld alliance travelers, can access the Admirals Club lounge near Gate B13, which offers seating, complimentary snacks and beverages, Wi-Fi, and workstations.
Note: Terminal 1 connects passengers to the International Terminal and Terminals 2 and 3 through a secure walkway inside security, so connecting flights don’t require re-clearing security in most cases.
American Airlines’ Destinations from SFO
American Airlines serves a wide array of destinations from SFO, connecting passengers to both domestic and international locations. The airline’s network includes major cities across the United States, such as New York City, Dallas, and Chicago, along with routes to Mexico and Canada. These routes are popular among business travelers who rely on frequent scheduling and flexibility.
On the international side, American Airlines and its oneworld alliance partners extend connectivity well beyond SFO’s mainline routes. Through codeshare agreements with airlines like Japan Airlines and Cathay Pacific, passengers can connect onward to additional destinations across Asia.
Sustainability Initiatives at the Terminal
| Initiative | Description | Impact |
|---|---|---|
| Solar Panels | Installation of solar panels to generate renewable energy | Reduction in carbon emissions and energy costs |
| Waste Management | Implementation of recycling and waste reduction programs | Decrease in landfill waste and promotion of sustainable practices |
| Electric Vehicle Charging | Installation of charging stations for electric vehicles | Promotion of clean transportation and reduction in air pollution |
SFO has invested in sustainability across its terminals, including energy efficiency upgrades, recycling and waste-reduction programs, and expanded electric vehicle charging. Airlines operating at SFO, including American, benefit from and contribute to these airport-wide initiatives, alongside their own efforts toward more fuel-efficient aircraft.
American Airlines’ Partnerships at SFO
As a member of the oneworld alliance, American Airlines works with partner carriers to give SFO passengers a broader set of travel options, including shared lounge access and mileage-earning across airlines. Regional codeshare agreements also help extend American’s reach into smaller markets not served directly by its mainline flights, improving connectivity for travelers heading to destinations across Northern California and beyond.
Customer Experience at the Terminal
From check-in to boarding, American Airlines uses self-service kiosks to speed up the process, while staff remain available for passengers who need extra assistance. In flight, passengers can expect complimentary snacks and beverages on domestic routes, expanded meal service on international flights, and a seatback or streaming entertainment system on most aircraft.
American’s AAdvantage loyalty program lets frequent flyers earn miles that can be redeemed for upgrades or free flights, adding value for travelers who fly through SFO regularly.
Pro Tip: Check in online and use a self-service kiosk at Terminal 1 to skip the counter line entirely if you’re only checking a bag.
Future Expansion Plans for American Airlines at SFO
SFO continues to invest in terminal modernization across the airport, including major upgrades to Terminal 3. While these projects are broader than any single airline, American Airlines has continued to grow its schedule at SFO, adjusting flight frequency and destinations as demand shifts between leisure and business travel.
Tips for Navigating the American Airlines Terminal at SFO
Navigating Terminal 1 at SFO is straightforward with a bit of preparation. Arrive early — at least two hours before a domestic flight — to allow time for check-in, security, and any unexpected delays. Review a terminal map in advance so you know where Concourse B’s gates, the Admirals Club, and dining options are located.
Warning: Gate assignments and even terminal usage can shift during peak travel seasons, so always confirm your gate on the day of travel rather than relying on past visits.
If you’re traveling with family or a larger group, set a meeting point in case anyone gets separated. Use the American Airlines app or SFO’s flight status tools for real-time gate and delay updates, and take advantage of Terminal 1’s dining and lounge options while you wait.
FAQs
What terminal is American Airlines at SFO?
American Airlines operates out of Terminal 1, also known as the Harvey Milk Terminal, at San Francisco International Airport (SFO), using Concourse B.
Where is the American Airlines Admirals Club at SFO?
The Admirals Club lounge is located in Terminal 1, near Gate B13.
Can I connect to other SFO terminals from American Airlines’ terminal?
Yes. Terminal 1 connects to the International Terminal and Terminals 2 and 3 through a secure walkway inside security, so most connections don’t require leaving the secure area.
Sources
- American Airlines Newsroom — confirms Terminal 1 Admirals Club location near Gate B13
- American Airlines SFO Airport Information — official terminal and concourse details
- Airport Guide: SFO Terminal 1 — gate numbering and terminal layout