SFO

$28 Find Cheap Flights to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$93
Typical prices: $105-$239
Frontier
Fri 8/7Mon 8/10
ONT - SFO • Non-stop
Cheapest one-way
$28
Typical prices: $78-$179
Frontier
Wed 9/2
ONT - SFO • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
JetBlue adds free Wi-Fi; United Economy Plus gives up to 6 extra inches.
Delta Comfort Plus and American Main Cabin Extra add legroom and perks.
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Top routes
Cheapest
Most popular
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 41% compared to booking last minute.
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When to travel
Cheapest • 12% price drop
Most popular
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Flight Deals
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Flight Deals

Cheap Flights to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to San Francisco

Fri, Aug 7 - Mon, Aug 10
Frontier Logo
8:58 am - 10:25 am
ONT
-
SFO
1h 27mnonstop
Frontier Logo
9:33 am - 11:02 am
SFO
-
ONT
1h 29mnonstop
$93Frontier
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
8:48 am - 10:15 am
ONT
-
SFO
1h 27mnonstop
Frontier Logo
9:33 am - 11:02 am
SFO
-
ONT
1h 29mnonstop
$94Frontier
Tue, Aug 4 - Tue, Aug 11
American Airlines Logo
7:00 am - 3:34 pm
SEA
-
SFO
8h 34m
1 stop
American Airlines Logo
5:33 am - 2:03 pm
SFO
-
SEA
8h 30m
1 stop
$185American Airlines
Fri, Sep 11 - Fri, Sep 11
Alaska Airlines Logo
3:45 pm - 6:00 pm
SEA
-
SFO
2h 15mnonstop
Alaska Airlines Logo
8:53 pm - 11:10 pm
SFO
-
SEA
2h 17mnonstop
$188Alaska Airlines
Wed, Sep 23 - Sat, Sep 26
American Airlines Logo
7:10 am - 12:36 pm
SEA
-
SFO
5h 26m
1 stop
American Airlines Logo
9:29 am - 3:57 pm
SFO
-
SEA
6h 28m
1 stop
$189American Airlines
Fri, Aug 28 - Tue, Sep 1
Delta Logo
5:51 pm - 8:19 pm
SEA
-
SFO
2h 28mnonstop
Delta Logo
6:20 am - 8:31 am
SFO
-
SEA
2h 11mnonstop
$192Delta
Wed, Dec 9 - Wed, Jan 6
Delta Logo
2:55 pm - 8:18 pm
ORD
-
SFO
7h 23m
1 stop
Delta Logo
8:55 am - 5:21 pm
SFO
-
ORD
6h 26m
1 stop
$296Delta
Thu, Aug 6 - Thu, Aug 6
United Airlines Logo
6:10 am - 8:47 am
ORD
-
SFO
4h 37mnonstop
United Airlines Logo
10:38 pm - 5:01 am
SFO
-
ORD
4h 23mnonstop
$300United Airlines
Fri, Sep 18 - Tue, Sep 22
Alaska Airlines Logo
6:59 pm - 10:19 pm
JFK
-
SFO
6h 20mnonstop
Alaska Airlines Logo
5:16 pm - 3:40 pm
SFO
-
JFK
19h 24m
1 stop
$323Alaska Airlines
Mon, Aug 17 - Fri, Aug 21
United Airlines Logo
7:29 pm - 12:50 am
LGA
-
SFO
8h 21m
1 stop
United Airlines Logo
11:30 pm - 10:17 am
SFO
-
LGA
7h 47m
1 stop
$327United Airlines
Booking Insights

KAYAK's insights & trends for flights to San Francisco

Get data-powered insights and trends for flights to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to San Francisco?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Ontario, at $93 return. The most popular connection is from New York to San Francisco and KAYAK users have found round-trip deals for as low as $320 in the last 5 days.

How much is a flight to San Francisco?

The average and cheapest price for all round-trip flights to San Francisco from each origin found by users searching on KAYAK in the last month.

A flight to San Francisco costs $402 on average. The cheapest price found on KAYAK in the last 2 weeks cost $28 and departed from Ontario. The most popular routes on KAYAK are Los Angeles to San Francisco which costs $289 on average, and Boston to San Francisco, which costs $487 on average.

See prices from:

What is the cheapest day to fly to San Francisco?

The average price of all round-trip flights to San Francisco clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to San Francisco is Friday where round-trip tickets can be as cheap as $383. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $639 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to San Francisco is September, where tickets cost $318 on average for return flights. On the other hand, the most expensive months are June and March, where the average cost of tickets from the United States is $449 and $389 respectively. For one-way flights, the best month to travel is October with an average price of $194.

What is the cheapest time of day to fly to San Francisco?

The average price for all round-trip flights to San Francisco depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to San Francisco is generally at night, when round-trip flights cost $452 on average. The most expensive time of day to fly to San Francisco is generally in the evening, which is peak travel time and where the average cost of a ticket is $538.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Provo $146 round-trip, from Los Angeles $185 round-trip, from Salt Lake City $191 round-trip.

How far in advance should I book a flight to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight to San Francisco

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Delta and Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines, Alaska Airlines and JetBlue

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know - Book Cheap San Francisco Plane Tickets

Low seasonJanuary
Cheapest flight$28
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Ontario to San Francisco

When to book flights to San Francisco

Are your dates flexible? Find out the best times to travel to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. The information is for flights to San Francisco based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights to San Francisco: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew to San Francisco 
ManishFlew with Air New Zealand
RDU
-
SFO
Apr 2026
Long haul so make sure to get up and move around a bit.
AgustinFlew with United Airlines
IAH
-
SFO
Feb 2026
Arrive early for your flight so you’re not rushing. And have plenty of patience with other people that are impatient.
BeverlyFlew with JetBlue
JFK
-
SFO
Dec 2025
Wear support socks which helps when you sit for a long time.
LindseyFlew with SWISS
SAN
-
SFO
Dec 2025
Ready for weather delays of wind in SFO, which happens often. Keep that in consideration when planning an additional leg of a trip after it from SFO.
Verified travelerFlew with United Airlines
ONT
-
SFO
Feb 2026
1 hr is doable if you're transferring at sfo but probably just get something to go food wise
Verified travelerFlew with Alaska Airlines
BOI
-
SFO
Feb 2026
Dont wear all your clothes its not worth the discomfort to save on a checked bag.
Verified travelerFlew with Alaska Airlines
EWR
-
SFO
Dec 2025
Bring your own food and in flight activity since they don’t supply any.
GeraldFlew with Delta
BOS
-
SFO
Mar 2025
Book a flight early in the morning. The plane & crew will have arrived the previous night
Verified travelerFlew with Alaska Airlines
PDX
-
SFO
May 2025
My mom told me prior to boarding an airplane I should empty my bladder. As I age, that advice becomes more sage.
LuisFlew with Delta
JFK
-
SFO
Mar 2025
It’s a long flight, come prepared to either watch movies, read or sleep.
RobertFlew with United Airlines
SEA
-
SFO
Mar 2025
If you’re picking up a rental car it’s not very clear that you have to take the train. Signage can be improved at SFO.
Verified travelerFlew with Alaska Airlines
LAX
-
SFO
Jan 2025
Bring water and snacks with shorter flights as some routes will not offer it.
Verified travelerFlew with Alaska Airlines
DCA
-
SFO
Jan 2025
Reserve your plane seat & bring something to eat in the plane.
Verified travelerFlew with Alaska Airlines
MCO
-
SFO
Nov 2024
Use their app, it’s great & they notify boarding, etc
CongFlew with United Airlines
SNA
-
SFO
Nov 2024
Nothing really, being clothes that are easily taken off like shoes at the security will always save time
PhallyFlew with Alaska Airlines
IAD
-
SFO
Oct 2024
Don't take too much stuff. Make sure to have the necessary documents or boarding pass ready.
PaulaFlew with Alaska Airlines
BOS
-
SFO
Jul 2024
Get your boarding pass online and save it to your wallet App on the iPhone. Makes it so easy
Verified travelerFlew with Alaska Airlines
JFK
-
SFO
Jun 2024
SFO is one of the most convenient and pleasant airports. When flying Alaska Air make sure to bring your food and a larger water bottle that usual (you get only two drink services (one small cup each) for a 6 hour flight.
VyomaFlew with Alaska Airlines
SAN
-
SFO
Jun 2024
Be sure to read the signs, i have heard it's confusing for connecting flights if you don't follow the directions.
NoamFlew with Alaska Airlines
IAD
-
SFO
Aug 2024
Flying to the Ronald Reagan airport is closer and faster to D.C. than the Dulles airport.
KathyFlew with United Airlines
RDD
-
SFO
Jun 2024
Realize it’s a smaller plane and you will probably have to green tag any carry on.
Verified travelerFlew with Alaska Airlines
LAX
-
SFO
Jul 2024
Bring a sweater, just incase other people's ac makes you cool.
DeniseFlew with Alaska Airlines
IAD
-
SFO
May 2024
Bring your own device. No screens on the seatbacks.
Verified travelerFlew with Alaska Airlines
LAX
-
SFO
May 2024
Please be prepared to check in your luggage even if there is available space in the overhead bins. Despite the availability of space, Alaska Airlines employees refused to allow us to bring our bags onto the plane and insisted that we check them in.

FAQs - booking San Francisco flights

  • What child-friendly features and amenities does SFO have available?

    SFO has multiple “Kids’ Spots” throughout the terminals that provide a fun and interactive space for children prior to their flights. There are also self-guided tours in the International Terminal and in Terminals 2 and 3.

  • How far away is the San Francisco International Airport from the city?

    San Francisco International airport is around 21 miles away from the city. It takes about 30 minutes to get into the city on the BART and costs around $10. A taxi from the airport to downtown will take between 25 and 35 minutes and will cost roughly $40. Shuttle buses from the airport to the city are also available and tend to be a bit slower than taxis as they have to make multiple stops, so expect to be on there around 40 minutes. Tickets will range between $15 and $25.

  • What to do in San Francisco International Airport?

    SFO’s Aviation Museum & Library is a great option for travelers who have some downtime to spend at the airport. Open from 10:30 a.m. to 4:30 p.m. and located in the International Terminal pre-security, it is a great educational experience for the whole family.

  • Are there any other airports nearby SFO?

    The Oakland International Airport connects directly via BART to SFO and is a great alternative option for flying into the Bay Area. Slightly to south, you will also find the San Jose International Airport, which is easily reached by shuttle bus from SFO.

  • Do hotels in San Francisco offer shuttle service from San Francisco International Airport?

    Dozens of hotels offer complimentary shuttle services to and from SFO. The shuttle buses can be found in the Hotel Courtesy Shuttle Zones at each terminal. Phones to contact participating hotels are located at each zone.

  • What are the accessible services available at San Francisco International Airport?

    SFO is an accessible airport. It is committed to ensuring that all facilities, programs, and services are accessible to every traveler. Parking for special needs passengers is available in the disabled parking stalls close to the terminals. SFO offers TTY telephones, accessible via credit card and cash. The phones are available on the Departures and Arrivals Levels of Terminal 1, Terminal 3, and International Terminal. Wheelchair assistance services are offered by the airlines at the terminal check-ins and curbside in Terminals 1, 2, and 3.

  • Is there a business center at San Francisco International Airport?

    If you’re a business traveler, take advantage of the onsite business center at SFO. The building, located at 575 North McDonnell Road, is the new home for Airport Commission employees working in Information Technology and Telecommunications (ITT), Aviation Management, Parking Management, Revenue Development and Management, Finance, and Accounting.

  • How can I get around San Francisco International Airport?

    SFO's AirTrain offers transit within the airport. It operates 24/7 and has station departures every 4min. Two lines, The Blue Line and the Red Line, are operational. The Red Line links all the terminal garages, terminals, Grand Hyatt at SFO, and the BART station. On the other hand, the Blue Line links the Rental Car Center, the Grand Hyatt at SFO, the BART Station, and Long-Term Parking.

  • Which rental car companies are available at San Francisco International Airport?

    If you’re looking to drive yourself around San Francisco, you will be happy to learn that the airport has a rental car center. To get to the Rental Car Facility, take the AirTrain Blue Line. The following agencies offer onsite rental car services at FLL: Alamo, Avis, Dollar, Budget, Sixt, Hertz, Thrifty, Enterprise, and National.

  • What is the cheapest flight to San Francisco?

    In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Ontario, at $93 return. The most popular connection is from New York to San Francisco and KAYAK users have found round-trip deals for as low as $320 in the last 5 days.

  • How far is San Francisco Airport from central San Francisco?

    Central San Francisco is 11 miles away from San Francisco Airport.

  • What is the name of San Francisco’s airport?

    There is only 1 airport in San Francisco, called San Francisco Airport (SFO). It can also be referred to as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $402. The cheapest price found on KAYAK in the last 2 weeks cost $28 and departed from Ontario Airport.

  • How does KAYAK find such low prices on flights to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to San Francisco

  • Looking for cheap airfare to San Francisco? 25% of our users found round-trip tickets to San Francisco for the following prices or less: From Chicago O'Hare Intl $948, from San Diego $1,161, from Phoenix Sky Harbor Intl $1,618
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.
  • Active members of the US military and their families are welcome to use SFO's USO Center. It is located on the Mezzanine Level of the Harvey Milk Terminal 1 and operates daily from 7:00am to 8:00pm. The USO Center offers a Gaming lounge, computer stations, resting zones, family rooms, drinks, and snacks.
  • Need to center yourself before or after your flight to San Francisco? The Berman Reflection Room in the pre-security area of the International Terminal is there for you. It is open daily from 6:30am to 11:30pm.
  • Freshen Up!, located in the International Terminal, offers a variety of services, such as showers, ironing facilities and nap rooms. So if you need to clean up a bit before you head out into the city, this is the perfect place for you. Wash away your frustrations starting at $30, their personable staff will make you feel right at home
  • If you are taking your furry companion with you on your flight to San Francisco, SFO has both pre-security and post-security animal relief areas that are open 24 hours daily. The animal relief areas offer a variety of amenities, including water bowls, paper towels and bags.
  • Wish you could have taken your pet with you? Don’t worry if you need a little love from a furry friend, because the Wag Brigade is there for you in Terminal 3. The Wag Brigade is a troop of service dogs and their handlers who are there to help you decompress and relax before or after your flight. The Wag Brigade is available Monday to Friday and can be found around the check-in counters and the boarding area, just look for the vests reading “Pet me!”
  • The easiest way to get into San Francisco from SFO is to take the BART (Bay Area Rapid Transport) straight from the airport to your final destination. The San Francisco International Airport station is located in Terminal 3 and is a short AirTrain ride from the other terminals. Trains arrive every 15 minutes and it takes around 30 minutes to get from the airport to the downtown area. A one-way ticket from the airport to downtown costs around $10.
  • Wells Fargo runs ATMs at San Francisco International Airport (SFO). In Terminal 1, the ATMs are near Gate 42 in the Boarding Area C and Gate 24 on the Arrivals Level. The ATMs in Terminal 2 are near Gate 59B in the Boarding Area D.
  • The Grand Hyatt at SFO is conveniently located at the airport entrance. It is easily accessible from all the terminals by the road or the Air Train. The hotel features soundproof guest rooms, banquet facilities, a fitness center, and culinary services.
  • SFO Medical Clinic is located on the Departures Level of the International Terminal Main Hall Departures/Ticketing Level (pre-security). Operating hours would be 8:30am to 5:00pm. Closed on weekends and holidays. It offers travel medicine, occupational health services, immigration physicals, and urgent care.
  • Gadget-totting passengers traveling through SFO will be happy to learn that they can charge their devices for free at the airport’s workstations. The stations are located Pre and Post security in the International Terminal Main Hall.

Everything you need to know for your flight to San Francisco

Flights with popular airlines flying to San Francisco

Flights from the other most popular airlines that fly from the United States to San Francisco according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.