Which terminal does my airline use at SFO?

Terminal 1 (Harvey Milk): Southwest + Delta + JetBlue + Spirit + Frontier + Hawaiian. Terminal 2: American + Alaska. Terminal 3: United domestic (huge hub). International Terminal: All foreign carriers (BA, Lufthansa, AF, KLM, Cathay, Singapore, ANA, JAL, Korean Air, Air Canada, Emirates, Qatar, Turkish, Qantas, Air NZ, EVA, China Airlines, China Eastern, Aer Lingus) + United international.

How do I get from SFO to downtown San Francisco?

BART — $10.75, 30 min direct to Embarcadero or Powell Street stations. Best option. Station at the International Terminal — free AirTrain APM connects from other terminals. Every 15 min. Taxi $50-$70. Uber/Lyft $25-$50. AirTrain (within airport): free, connects all terminals + rental car centre + BART station.

What is the AirTrain at SFO?

A free automated people-mover connecting all 4 terminals (T1, T2, T3, International) + the rental car centre + the BART station + long-term parking. Two routes: Red Line (between terminals) and Blue Line (extending to rental cars + BART). Runs 24/7, every 4-5 min. Essential for inter-terminal connections at SFO.

How long do I need for a SFO connection?

Same terminal: 60 min minimum domestic. Inter-terminal via airside connection (T2 ↔ T3 via Boarding Area E airside link): 75-90 min. Inter-terminal with re-security: 90-120 min. International to domestic at SFO requires re-clearing security after customs. Star Alliance international (UA + foreign Star carriers) all in Boarding Area A — easy connections.

How early should I arrive at SFO?

Domestic: 2 hours. International: 3 hours. SFO security is generally fast (15-30 min) but Sunday/Monday mornings + Friday evenings can hit 45-60 min. Pre-Check + Clear available. International Terminal can have longer security lines during morning Asia departures.

SFOKSFO

San Francisco International Airport

San Francisco, United States · 51.4M (2024) passengers / year · 4 terminals

T1 T2 T3 INT

At a glance

IATA / ICAO

SFO / KSFO

Passengers / year

51.4M (2024)

Terminals

T1 Harvey Milk + T2 + T3 + International

Runways

4 (in two crossing pairs)

Main hub

United Airlines (T3 + INT-A)

BART

Direct rail to downtown SF (30 min)

Distance to downtown SF

21 km / 13 mi south

Terminals + flights

Tap a terminal to filter airlines, lounges and flights

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Terminals

T1Terminal 1 — Harvey Milk

Domestic — Southwest + low-cost + Delta

Airlines (6)

Renovated 2019, renamed for Harvey Milk. Modern, sustainable design.

T2Terminal 2

American + Alaska

Airlines (2)

Smallest passenger terminal at SFO.

T3Terminal 3

United Airlines domestic hub

Airlines (1)

United's mega-hub at SFO. Boarding Area E + F connect airside to International Terminal G.

INTInternational Terminal

All foreign carriers + United international

Airlines (20)

Centrepiece building (2000) — Boarding Areas A (Star + non-aligned) + G (oneworld + SkyTeam). United international shares with foreign Star carriers in A.

Notable flights

4 shown

Hand-curated from the AirConnect schedule registry. Tap any flight number for the great-circle route, aircraft and traveller photos.

SQ1← SIN

Singapore Airlines · Singapore

09:30Airbus A350-900

UA1→ SIN

United Airlines · Singapore

23:25Boeing 787-9

NH1← HND

All Nippon Airways · Tokyo (Haneda)

17:30 -1Boeing 777-300ER

AI173← DEL

Air India · Delhi

18:25Boeing 777-200LR

Lounges

United Polaris Lounge

INT

United Polaris Business

One of UA's best lounges — sit-down restaurant, day suites.

United Club

United Club membership

Multiple locations across T3.

British Airways Lounge

INT

BA Club + oneworld Sapphire

Cathay Pacific Lounge

INT

CX Business + oneworld Sapphire

KAL Business Class

INT

KE Prestige + SkyTeam Elite Plus

Centurion Lounge

INT

Amex Platinum / Centurion

AMEX's flagship at SFO.

Admirals Club

Admirals Club membership

Alaska Lounge

Alaska Lounge membership

Mode	To	Cost	Time	Notes
BART (Bay Area Rapid Transit)	Downtown SF (Embarcadero / Powell)	$10.75	30 min	Direct rail. Station at International Terminal. Every 15 min.
AirTrain + BART	BART via free shuttle from domestic terminals	Free + $10.75	40-50 min	Free AirTrain APM to BART station.
Caltrain (Bay Shuttle + Caltrain)	Peninsula + Silicon Valley	$5-$12	45-90 min	Free SamTrans/BART shuttle to Millbrae for Caltrain.
Taxi	Downtown SF	$50-$70 + tip	20-45 min
Uber / Lyft	Anywhere Bay Area	$25-$50	20-45 min
SamTrans bus 398	Daly City + Pacifica	$2.50	30-45 min

San Francisco International Airport

At a glance

Terminals + flights

Terminals

Notable flights

Lounges

To / from San Francisco

SFO — Frequently asked

Other major airports