SEA - SFO

Find cheap flight tickets from Seattle to San Francisco

1 adult
1 adult, Economy, 0 bags

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

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

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

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

Multiple Airlines Logo
SEA-SFO
1757 kmmulti-stop
Multiple Airlines Logo
SFO-SEA
1757 kmmulti-stop
Multiple Airlines
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Everything you should know

When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 58% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 13% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
Multiple Airlines
Tue 28/10
SEA - SFO • multi-stop
Cheapest one-way flight
Multiple Airlines
Tue 28/10
SEA - SFO • multi-stop
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
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.

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle 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 from Seattle to San Francisco is January, where tickets cost ₹ 18,092 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is ₹ 24,005 and ₹ 23,652 respectively.

How far in advance should I book a flight from Seattle 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 from Seattle 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 on the flight from Seattle to San Francisco, you should book around 4 weeks before departure, which saves you about 58% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

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Good to know

Low seasonSeptember
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly and prices are also 0% lower on average.

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
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 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.

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

    Alaska Airlines, Hawaiian 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? 25% of our users found flights on this route for ₹ 5,747 or less one-way and ₹ 66,649 or less round-trip.
  • 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/Tacoma Intl to San Francisco?

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop from Seattle/Tacoma Intl 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

Reviews of the top airline flying from Seattle to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Francisco. 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 Seattle to San Francisco? 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 11203 reviews
7.1Food
8.5Crew
7.0Entertainment
7.8Comfort
8.1Boarding
Airline reviews

Almost 3 hr delay in Settle with very little information available to passengers. They boarded the plane and we waited for a long time inside the plane as well.

2.0 MediocreAnonymous, Oct 2025SEA - STS
Read more Alaska Airlines reviews

Almost 3 hr delay in Settle with very little information available to passengers. They boarded the plane and we waited for a long time inside the plane as well.

Food and entertainment not applicable - standard drinks and cinnamon cookies; crew did not do a song and dance for us so no entertainment. I like the slightly better leg room than American Airlines - at least it felt that way. Flight crew and atmosphere seemed more welcoming than American, too.

this was the THIRD time in four Alaska flights that were 2 hours late. Only one was due to weather. The intentionally posted each flight as only 1 hour and 55 minutes late so that they wouldn't have to give out vouchers. And then the flights all ended up more than 2 hours late. Makes United look like a premium carrier.

It was fine, mostly I was just happy to be on my last leg home. No in flight entertainment but that's forgivable since it was only a 2 hour flight.

Flight was cancelled, then rebooked on a flight that I was unable to get through since they had closed the gate.

Alaska Airlines adds time to flight time to make up for late departures. Also Alaska Airlines destroyed my suitcase and I had to buy another suitcase for return flight. Very frustrating and not sure I would fly Alaska Airlines again.

Landed and parked in back of larger jet. Cabin filled with jet exhaust. Left many with headache. I got sick to my stomach. Scrambled to find airsick bags

Plane seats are comfortable and seemed more roomy than others I have been on. Playing was clean and flight crew friendly. Passengers who have a connecting flight should however be allowed off the plane first

flights on time, flights that were leaving when scheduled..having the alaska people on the phone and most of all getting rid of the new atmos website it is terrible!!!!!!!!

Only issue was at the gate the clerk tried to get us to check our carry on bags. When I questioned the other clerk said, the flight isn't full, they are fine to carry on

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

Information on your arrival and departure airports

Seattle (SEA)
San Francisco (SFO)

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