SFO - SEA

£104 Find Cheap Flights from San Francisco to Seattle

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Seattle departing on 10/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Seattle, as well as popular online travel agencies
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Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to Seattle 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 return flight deals from San Francisco to Seattle

Wed, 10 Sep - Wed, 10 Sep
Alaska Airlines Logo
08:00 - 14:26SFO-SEA
6h 26m1 stop
Alaska Airlines Logo
17:05 - 19:19SEA-SFO
2h 14mdirect
£104Alaska Airlines
Find Deal
Tue, 5 Aug - Tue, 5 Aug
Alaska Airlines Logo
06:00 - 08:04SFO-SEA
2h 04mdirect
Alaska Airlines Logo
11:31 - 13:45SEA-SFO
2h 14mdirect
£111Alaska Airlines
Find Deal
Mon, 4 Aug - Mon, 11 Aug
Delta Logo
05:55 - 08:05SFO-SEA
2h 10mdirect
Delta Logo
21:31 - 23:43SEA-SFO
2h 12mdirect
£116Delta
Find Deal
Sat, 9 Aug - Tue, 12 Aug
Delta Logo
20:55 - 23:15SFO-SEA
2h 20mdirect
Delta Logo
10:25 - 12:51SEA-SFO
2h 26mdirect
£124Delta
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Tue, 16 Sep - Fri, 26 Sep
Southwest Logo
17:25 - 22:50SFO-SEA
5h 25m1 stop
Southwest Logo
16:20 - 23:10SEA-SFO
6h 50m1 stop
£130Southwest
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Thu, 4 Sep - Fri, 5 Sep
Southwest Logo
12:35 - 23:05SFO-SEA
10h 30m2 stops
Southwest Logo
16:20 - 23:10SEA-SFO
6h 50m1 stop
£138Southwest
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Sat, 26 Jul - Sat, 2 Aug
Hawaiian Airlines Logo
16:44 - 18:54SFO-SEA
2h 10mdirect
Hawaiian Airlines Logo
10:21 - 18:46SEA-SFO
8h 25m1 stop
£157Hawaiian Airlines
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Sat, 26 Jul - Sat, 2 Aug
Hawaiian Airlines Logo
08:00 - 14:20SFO-SEA
6h 20m1 stop
Hawaiian Airlines Logo
18:55 - 23:57SEA-SFO
5h 02m1 stop
£166Hawaiian Airlines
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Thu, 10 Jul - Mon, 14 Jul
United Airlines Logo
06:30 - 08:48SFO-SEA
2h 18mdirect
United Airlines Logo
05:10 - 07:22SEA-SFO
2h 12mdirect
£205United Airlines
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Fri, 4 Jul - Sun, 6 Jul
United Airlines Logo
18:40 - 20:56SFO-SEA
2h 16mdirect
United Airlines Logo
05:10 - 07:22SEA-SFO
2h 12mdirect
£221United Airlines
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Expert advice

Expert advice for your flight from San Francisco to Seattle

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
SFO

SFO offers kerbside check-in for United, Delta, and Southwest, making it easier for families and those in a hurry.

Read more about SFOby Blane Bachelor
SEA

Use the Link light rail for a cost-effective 40-minute ride from SEA to downtown Seattle, avoiding traffic.

Read more about SEAby Harriet Baskas
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor

Blane Bachelor

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet Baskas

Harriet Baskas

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.

Read more
Useful Info

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

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

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

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

If your flying dates are flexible, you should consider flying to Seattle on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from San Francisco to Seattle. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Seattle, 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 from San Francisco to Seattle is October, where tickets cost £145 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £208 and £203 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Seattle, 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 on the flight from San Francisco to Seattle, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.


Good to know - Cheap tickets from San Francisco to Seattle

Low seasonJanuary
High seasonJuly
Cheapest flight£57
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flight from San Francisco to Seattle

When to book flights from San Francisco to Seattle

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

FAQs for booking flights from San Francisco to Seattle

  • Is bag storage available at Seattle Tacoma International Airport?

    Smarte Carte offers not only rentals of carts, strollers, and wheelchairs but also provides baggage storage as well with their Baggage Storage Seattle service. They provide both short and long-term baggage storage in their secure facility. The facility is conveniently located on the arrivals level at baggage claim 9.

  • Is there a private area at Seattle Tacoma International Airport that nursing mothers can use?

    Inside the children's playroom, there is a Mother's Room which is private and quiet and also offers rocking chairs for you and your baby. This room comes with adjustable lighting as well as footstools, side tables, and electrical outlets. The airport offers a total of eight of these rooms throughout the various terminal buildings.

  • Does Seattle Tacoma International Airport have a cell phone lot?

    There is a complimentary cell phone lot featuring a large sign with a QR code. Drivers can simply scan the code on their smartphone to receive detailed arrivals information. The lot is located adjacent to the South 170th Street exit on the Airport Expressway. Drivers may park for free for up to twenty minutes.

  • If I have brought along my pet on my flight from San Francisco to Seattle in an animal carrier, where can I pick it up after my flight?

    All animals that traveled in the baggage compartment in animal carriers can be picked up in the baggage claim area. If your pet was sent via the airline’s cargo service, you must contact your individual airline to find out where their individual cargo service office is located at the airport to pick up your pet.

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

    In the last 3 days, the lowest price for a flight from San Francisco to Seattle was £78 for a one-way ticket and £141 for a return.

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

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

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

    The Boeing 737-900 Passenger/BBJ3 (winglets) is the aircraft model that flies most regularly on the San Francisco to Seattle flight route.

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

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Francisco and Seattle, with oneworld being the most commonly used for this route.

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

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

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

    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 San Francisco to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from 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 from San Francisco to Seattle?

    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 Seattle with an airline and back to San Francisco with another airline.

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

    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 Seattle from San Francisco 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 San Francisco to Seattle

  • Looking for a cheap flight from San Francisco to Seattle? 25% of our users found flights on this route for £105 or less one-way and £296 or less round-trip.
  • What trip to the San Francisco area is complete without a bit of wine tasting? If you missed out this trip, or you did not get your fill, then SF Uncork'd is just what the doctor ordered. Located in Terminal 3 near Gate 85 in San Francisco International Airport, this bar offers a large selection of all varieties of wines by the glass, including a unique selection of wine flights.
  • One unique business you usually do not find at an airport comes the San Francisco Museum of Modern Art Store, located in the International Terminal of San Francisco International Airport. Not only is this a great place to just browse and wonder, it also features great gifts and even offers excellent coffee.
  • Who does not love a brand new gadget or the latest piece of technology? If this sounds like you, then InMotion Entertainment is just your type of place. Located in the International Terminal of San Francisco International Airport, this store features headphones, cameras, and travel solutions like backpacks and travel pillows.
  • When looking for a Seattle hotel that is both convenient and affordable, there may be no better choice than the Hilton Seattle Airport & Conference Center. This hotel features a 24-hour complimentary airport shuttle service, is close to the rail station that can quickly bring you to downtown Seattle, has two separate business centers with free WiFi and remote printing, and houses a fitness center with whirlpool.
  • What says Seattle better than a booming and lively music scene? This is just as true at Seattle Tacoma International Airport, where you will find the Sub Pop Store. Imagine having a complete record store tucked away in an airport -- that is what you will find at Sub Pop. Located in the Central Terminal of Seattle Tacoma International Airport, this store may enchant you so much you may forget to ever leave the airport.

Prefer to fly direct from San Francisco to Seattle?

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

Direct departures

San Francisco to Seattle/Tacoma Intl

Monday

ANA, Aeromexico, Air New Zealand, +28 more

ANA, Aeromexico, +29 more

Tuesday

ANA, Aeromexico, Air New Zealand, +28 more

ANA, Aeromexico, +29 more

Wednesday

ANA, Aeromexico, Air China, +28 more

ANA, Aeromexico, +29 more

Thursday

ANA, Aeromexico, Air New Zealand, +30 more

ANA, Aeromexico, +31 more

Friday

ANA, Aeromexico, Air France, +26 more

ANA, Aeromexico, +27 more

Saturday

ANA, Aeromexico, Air China, +30 more

ANA, Aeromexico, +31 more

Sunday

ANA, Aeromexico, Air France, +28 more

ANA, Aeromexico, +29 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to San Francisco

Monday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

Tuesday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

Wednesday

ANA, Aeromexico, Air China, +29 more

ANA, Aeromexico, +30 more

Thursday

ANA, Aeromexico, Air France, +32 more

ANA, Aeromexico, +33 more

Friday

ANA, Aeromexico, Air France, +27 more

ANA, Aeromexico, +28 more

Saturday

ANA, Aeromexico, Air China, +32 more

ANA, Aeromexico, +33 more

Sunday

ANA, Aeromexico, Air France, +29 more

ANA, Aeromexico, +30 more

See more direct flights
See more direct flights

Top airline flying from San Francisco to Seattle

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.1Boarding
7.8Comfort
7.1Entertainment
8.5Crew
Airline reviews

We waited over an hour for our luggage to arrive at the carousel in Seattle.

6.0 GoodAnonymous, Jun 2025LAX - SEA
Read more Alaska Airlines reviews

We waited over an hour for our luggage to arrive at the carousel in Seattle.

Good. They checked my bag FOR FREE so I didnt have to try to hoist it up into the overhead compartment. Also, they served free beverages, which I appreciated.

Everything was really good except it was really cold in the plane,

Delayed flight due to mechanical issues. You only serve water or apple juice which is pathetic. To get to connecting flight you need to take a train so dumb. All in all it’s certainly not about the customer is it? You make that perfectly clear. It’s the last time I fly with you no matter how cheap your fares are!

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

First time flying with any airline that has decent seating. Great experience crew was friendly and the pilot was as well.

Even though we checked in, checked bags, and went through security, I was told at the gate that I hadn’t checked in. I was pulled aside and had to verify my identity yet again. Otherwise, the flight was fine.

Didn’t like anything. Alaska boarding process takes too long and is poorly managed. Flight crew unorganized and too lax not very professional. I fly very frequently (weekly) and this as the worst overall trip I have ever taken.

Very nice staff, plane was delayed-they gave some snacks about 30 min after delay due to mechanical issues (which I appreciate them checking the plane)

Due to an aircraft maintenance issue we switched planes but the catering/food didn't make iot on the new plane. On the way home the in-flight entertainment/wifi was not available. Throughout these difficulties the staff and crew were fantastic to deal with!

Everything you need to know for your flight from San Francisco to Seattle

Information on your arrival and departure airports

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