Service Overview
AirTrain is SFO’s free, automated monorail shuttle that connects every terminal with key airport facilities—making it the easiest way to move around the airport without walking long distances or using curbside shuttles. It’s clean, simple to use, and generally very reliable since it runs on an elevated guideway separate from road traffic.
Best for: solo travelers making quick terminal connections, families with luggage (no stairs required), and business travelers heading to BART or the Rental Car Center. If you’re switching terminals, going to long-term parking, or catching BART into the city, AirTrain is usually the smartest first step.
Route & Destinations
- All SFO terminals: Terminal 1, Terminal 2, Terminal 3, and the International Terminal are all on the AirTrain system.
- BART connection: Take AirTrain to the International Terminal to access the SFO BART Station (Departures/Ticketing level). From there, BART’s Yellow Line runs to downtown San Francisco (Powell, Montgomery, Embarcadero).
- Rental cars: AirTrain serves the SFO Rental Car Center (major brands are consolidated there), avoiding any need for off-site shuttle buses.
- Parking & airport facilities: AirTrain also links garage parking and other on-airport stops, useful for pickups and drop-offs.
Travel time to the city center: AirTrain itself is only within the airport; pair it with BART for about 30 minutes from SFO to downtown San Francisco (not including wait time).
Pricing & Tickets
- AirTrain fare: Free (no ticket, no gates for AirTrain rides).
- Connecting to BART: Expect about $10.30 one-way to downtown San Francisco (fares vary by destination). Pay using Clipper or BART’s contactless options (“Tap and Ride” where available).
- Discount options: If you’ll ride multiple Bay Area transit systems, a Clipper card is the easiest all-around payment method.
Schedule & Frequency
- Frequency: AirTrain runs very frequently throughout the day, typically every few minutes, so you rarely need to plan around it.
- Operating hours: AirTrain is designed for airport operations and generally runs from early morning to late night; for exact first/last train times (which can vary by line and maintenance windows), check flysfo.com.
- Peak considerations: During heavy arrival banks and conference periods, cars can get crowded—wait for the next train if you need more luggage space.
- Late night/early morning: AirTrain is usually your best way to move within SFO when roadway shuttles thin out; for getting into the city overnight, consider SamTrans night service or rideshare if BART isn’t running.
Practical Tips
- Where to board: Follow signs for “AirTrain” inside each terminal; stations are connected by short walks and elevators/escalators.
- Luggage: Level boarding makes it easy with rolling bags; stand clear of doors and avoid blocking aisles during busy periods.
- Accessibility: AirTrain stations and vehicles are wheelchair accessible with elevators and step-free entry.
- Real-time info: Use flysfo.com for airport transit updates; for onward travel use bart.gov (BART) and samtrans.com (buses).
- Best alternatives: For downtown San Francisco, BART is typically the fastest public option. For groups or door-to-door convenience, consider Uber/Lyft or a taxi (often quicker late at night, but traffic and surge pricing apply).