SEA - SFO

£59 Find Cheap Flights from Seattle to San Francisco – Compare and Save

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Everything you should know

Cheapest return fare
£97
Typical prices: £135-£250
Alaska Airlines
Wed 9/12Wed 16/12
SEA - SFO • Direct
Cheapest one-way flight
£59
Typical prices: £92-£230
Southwest
Wed 2/12
SEA - SFO • 1 stop
Advice from real travellers
United Premier Access adds priority check-in and boarding for faster airport flow.
Lufthansa Economy Light suits short trips without checked bags to save money.
Expert advice
Expert advice
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Expert advice
Expert advice
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Direct flights
You can fly direct with Alaska Airlines, Delta, and United Airlines. Average duration is 2h 17m
Direct flights
Direct flights
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Direct flights
Direct flights
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Avoid delays
Most punctual • 72% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 61% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Seattle to San Francisco (SEA-SFO)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to San Francisco

Wed, 9 Dec - Wed, 16 Dec
Alaska Airlines Logo
19:36 - 21:48SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 12mdirect
Alaska Airlines Logo
07:00 - 09:16SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 16mdirect
£97Alaska Airlines
Thu, 3 Dec - Mon, 7 Dec
Alaska Airlines Logo
15:53 - 18:07SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 14mdirect
Alaska Airlines Logo
07:00 - 09:16SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 16mdirect
£98Alaska Airlines
Mon, 16 Nov - Wed, 18 Nov
United Airlines Logo
20:18 - 22:43SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 25mdirect
United Airlines Logo
07:25 - 09:40SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 15mdirect
£98United Airlines
Tue, 8 Dec - Sat, 12 Dec
United Airlines Logo
13:14 - 15:28SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 14mdirect
United Airlines Logo
12:05 - 14:22SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 17mdirect
£98United Airlines
Thu, 19 Nov - Mon, 23 Nov
Delta Logo
17:54 - 20:17SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 23mdirect
Delta Logo
14:12 - 16:30SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 18mdirect
£98Delta
Thu, 10 Dec - Thu, 17 Dec
Delta Logo
11:00 - 13:24SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 24mdirect
Delta Logo
06:00 - 08:18SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 18mdirect
£98Delta
Tue, 17 Nov - Thu, 19 Nov
United Airlines Logo
13:16 - 15:31SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 15mdirect
United Airlines Logo
14:10 - 16:27SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 17mdirect
£98United Airlines
Tue, 1 Dec - Thu, 3 Dec
Delta Logo
11:00 - 13:24SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 24mdirect
Delta Logo
06:00 - 08:18SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 18mdirect
£98Delta
Mon, 16 Nov - Thu, 26 Nov
United Airlines Logo
20:18 - 22:43SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 25mdirect
United Airlines Logo
07:25 - 09:40SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 15mdirect
£98United Airlines
Thu, 10 Dec - Thu, 10 Dec
Alaska Airlines Logo
07:20 - 09:38SEA  Seattle/Tacoma Intl-SFO San Francisco
2h 18mdirect
Alaska Airlines Logo
10:40 - 12:59SFO  San Francisco-SEA Seattle/Tacoma Intl
2h 19mdirect
£99Alaska Airlines
Booking Insights

KAYAK’s insights & trends for Seattle to San Francisco flights

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

How much is a return flight from Seattle to San Francisco?

Flight prices are below average for this route right now.

Flights to San Francisco from Seattle usually cost between £140 and £303 in December.
The lowest price found in the past 5 days was £97 on Alaska Airlines (9 Dec–16 Dec).

What’s the cheapest day of the week to fly from Seattle to San Francisco?

For Seattle to San Francisco, Saturday is the cheapest day to fly on average and Thursday is the most expensive. Flying from San Francisco back to Seattle, the best deals are generally found on Sunday, with Thursday being the most expensive.

What is the cheapest month to fly from Seattle to San Francisco?

The cheapest month for flights from Seattle to San Francisco is January, where tickets cost £140 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is £244 and £235 respectively.

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

To get a below average price on the flight from Seattle to San Francisco, you should book around 4 weeks before departure, which saves you about 61% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to San Francisco

 
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

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 out at sea, likely en route to Antarctica or the Arctic.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specialising 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 favourite 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.

Harriet Baskas

Harriet Baskas

Expert on SEA

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, 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.

Good to know - Cheap tickets from Seattle to San Francisco

Low season

January

Cheapest flight

£59
Best time to beat the crowds (33% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Seattle to San Francisco

When to book flights from Seattle to San Francisco

Are your dates flexible? Find out the best times to travel from Seattle to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

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

Insights shared by verified travellers who flew the route from Seattle to San Francisco 
Verified travelerFlew with Alaska Airlines-Oct 2026
Smooth transition, bit of walking from baggage claim to customs to trains for gates. However, very quick at quiet times, loved it. No issues, had a coffee along the way.
RobertFlew with United Airlines-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.

FAQs for booking flights from Seattle to San Francisco

  • What facilities are available for business travelers at San Francisco International Airport?

    While there is no designated business center at San Francisco International Airport, there are plenty of workstations located throughout its terminals. There are also Power Bars in the Terminal 2 Food Court where travelers can plug in their laptops and continue their work while on the go.

  • Can I fly from Seattle to San Francisco non-stop?

    Due to their close proximity, many airlines offer nonstop flights from Seattle to San Francisco. Some of the airlines offering such flights include Delta Air Lines, United Airlines, and Alaska Airlines. There are also one-stop flights available through airlines like jetBlue Airways, Alaska Airlines, and American Airlines, with layovers in cities such as Long Beach, Los Angeles, and Portland.

  • What is the quickest way from San Francisco International Airport to downtown San Francisco?

    Aside from renting or driving a personal vehicle, BART (Bay Area Rapid Transport) is the quickest way to get from San Francisco International Airport to the city. Terminal 3 hosts the airport’s BART station and is easily accessed via AirTrain from the airport’s other terminals.

  • Should I fly to San Francisco International Airport, Oakland International Airport, or San José International Airport?

    Both San Francisco International Airport and Oakland International Airport are connected to BART, making them ideal for travelers who plan to take public transportation after their flights from Seattle to San Francisco. The main difference between the two is that San Francisco is on the west side of the bay while Oakland is on the east. San José International Airport, on the other hand, is not connected via BART, but there are other public transport options available. However, the main reason to fly into San José is if your final destination is outside of the Bay Area, as the airport is located a bit further outside the Bay Area’s urban sprawl.

  • What is the cheapest flight from Seattle to San Francisco?

    In the last 5 days, the lowest price for a flight from Seattle to San Francisco was £59 for a one-way ticket and £97 for a return.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to San Francisco?

    Alaska Airlines, and Delta offer inflight Wi-Fi service on the Seattle to San Francisco flight route.

  • Which aircraft models fly most regularly from Seattle to San Francisco?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to San Francisco flight route.

  • Which airline alliances offer flights from Seattle to San Francisco?

    oneworld is the only airline alliance operating flights between Seattle and San Francisco.

  • On which days can I fly direct from Seattle to San Francisco?

    There are direct flights from Seattle to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle 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 from Seattle to San Francisco.

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

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle 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 from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to San Francisco

  • Looking for a cheap flight from San Francisco to Seattle? 25% of our users found flights on this route for £77 or less one-way.
  • Looking to take public transport to Seattle-Tacoma International Airport so you can avoid the hassle of renting a car? Link Light Rail services connect Seattle-Tacoma International Airport directly to downtown Seattle and even to the University of Washington. The airport’s Link station is located outside the airport on the fourth floor of the adjacent parking garage.
  • Want to give the kids the chance to burn off a bit of excess energy before the flight? Stop by Seattle-Tacoma International Airport’s Playroom, located by the Seattle Tap Room in the Central Terminal by the A gates. At San Francisco International Airport there are three children’s play areas to choose from: two in Terminal 3 and one in Terminal 2.
  • Fortunately for travelers wanting to grab a bite to eat before they board their flight out of Seattle-Tacoma International Airport, there are plenty of restaurant options available - even for those with dietary restrictions. For vegetarians and vegans there is Floret, while for those who prefer meat on the menu, there is Rel’Lish Burger Lounge.
  • The Aviation Museum in San Francisco International Airport is a great family-friendly activity for those who are looking for a diversion during their time at the airport. The museum includes a library and is open from 10:30 a.m. to 4:30 p.m.
  • To reach San Francisco International Airport’s Rental Car Center, simply hop on the AirTrain Blue Line at any one of the airport’s terminals. The AirTrain runs 24 hours a day and also connects the terminals to all of the airport’s parking garages and the BART station.

Prefer to fly direct from Seattle to San Francisco?

 
Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Francisco

Monday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

See more direct flights

Direct returns

San Francisco to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

See more direct flights

More options for your flight from Seattle to San Francisco

Complete your trip to San Francisco with a hotel stay or car hire