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San Francisco International Airport is the primary airport serving the San Francisco Bay Area and a major hub for United Airlines. SFO handles over 57 million passengers annually and offers service to more than 125 domestic and international destinations. Known for its innovative terminals and proximity to Silicon Valley, Fareclue helps you find the best deals on flights from SFO.
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Airlines Operating from SFO Airport
SFO serves as a major hub for United Airlines, which operates the majority of domestic and international flights. Alaska Airlines, Delta Air Lines, American Airlines, Southwest Airlines, and JetBlue also maintain significant operations. International carriers including Singapore Airlines, Cathay Pacific, Japan Airlines, and Air France offer premium service to Asia and Europe, making SFO a key gateway to the Pacific Rim.
Popular Airlines from San Francisco (SFO)
American Airlines
Code: AA
American Airlines is one of the largest airlines in the world that offers domestic and international flights to hundreds of destinations. If you are planning to book American Airlines flights it is so easy and simple as it offers comfortable seats at low prices.
Starts $179*
Southwest Airlines
Code: WN
Southwest Airlines is a popular airline that offers flights to many domestic and international destinations. If you want to book Southwest flights, process is very simple and easy with affordable fares, comfortable seats, and has multiple travel options.
Starts $199*
Major Destinations with Direct Flights from San Francisco
San Francisco International Airport offers extensive domestic and international service. Its position on the West Coast makes it a prime gateway to Asia and the Pacific:
- Los Angeles – One of the busiest short-haul routes in the US with United, Delta, Southwest, JetBlue, and Alaska Airlines.
- New York – Multiple daily transcontinental flights to JFK and Newark with United, Delta, JetBlue, and American Airlines.
- Seattle – Frequent service with Alaska Airlines, United Airlines, and Delta Air Lines.
- Chicago – Daily non-stop flights to O'Hare with United Airlines, American Airlines, and Southwest.
- Denver – Regular departures with United Airlines, Southwest Airlines, and Frontier Airlines.
- Tokyo – Non-stop service to Narita and Haneda with United Airlines, Japan Airlines, and All Nippon Airways.
- London – Direct transatlantic flights with United Airlines and British Airways.
- Singapore – Ultra-long-haul non-stop service with Singapore Airlines and United Airlines.
SFO Terminal Layout
San Francisco International Airport has four terminals: Terminal 1 (Southwest, JetBlue, Frontier), Terminal 2 (American Airlines, other carriers), Terminal 3 (United Airlines domestic), and the International Terminal (United international and all foreign carriers). All terminals are connected airside via a central connector. SFO is also home to the SFO Museum, which features rotating art and aviation exhibits throughout the terminals.
Popular Flight Routes from San Francisco (SFO)
United Airlines
$129*
per person
United Airlines
$259*
per person
Alaska Airlines
$149*
per person
United Airlines
$219*
per person
Real Experiences at SFO Airport
- SFO's International Terminal is an architectural gem with spacious seating areas and excellent views of the tarmac and surrounding hills.
- The SFO Museum features free exhibitions throughout the terminals, showcasing art, history, and aviation artifacts.
- Fog delays are common, especially in summer months; check your flight status regularly and build buffer time into your schedule.
- Dining options are diverse, from high-end restaurants by local Bay Area chefs to grab-and-go options in every terminal.
- BART connects SFO directly to downtown San Francisco and the wider Bay Area, making ground transportation convenient.
- Free Wi-Fi is available throughout the airport with solid speeds for streaming and video calls.
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What Our Travelers Say
Real reviews from travelers who booked with FareClue.
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Sofia G.
Miami, FL
Needed to fly internationally on short notice. They had me booked and confirmed within the hour at a fair price.
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Atlanta, GA
I've booked four trips through FareClue now. Consistently the best fares and the most responsive support I've used.
James O.
Boston, MA
Business class fare was hundreds below what the airline quoted me directly. The whole process took ten minutes.
Marcus Chen
San Francisco, CA
The first class experience was absolutely phenomenal. Private suites, Michelin-star dining, and unparalleled service. Worth every penny!
Victoria Hamilton
New York, USA
Booking was effortless and the support team answered every question within minutes. Highly recommend FareClue to anyone.
David R.
Chicago, IL
How to Book the Best Flights from This Airport
- 1
Check which airlines operate from this airport's terminals before searching fares
- 2
Identify the dominant carrier at this airport — hub airlines often have lower fares here
- 3
Compare departure times: early morning and late night flights typically cost less
- 4
Book 4–8 weeks ahead for domestic routes and 2–4 months for international departures
- 5
Ask about lounge access when booking business class — most major airports have premium options
- 6
Request a private fare quote mentioning this airport to get tailored route recommendations
Why Book Your Airport Flight Through Fareclue?
Our agents specialize in airport-based fare sourcing — we know which carriers dominate each hub and how to route around high-markup monopoly fares.
- 1
Airport-specific fare expertise
We track fare trends by departure airport and know the cheapest windows for each hub.
- 2
Multi-airline comparison
We compare all carriers serving this airport to find the best combination of price and schedule.
- 3
Terminal and logistics support
We advise on terminal check-in, lounge access, and connection timings for your specific route.
- 4
Preferred partner discounts
Our airline contracts unlock private fares on many routes departing from major hub airports.
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Frequently Asked Questions about SFO Airport
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