Cheap flights from Seattle to San Francisco from £67

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
29 Jul — 5 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or October, booked 88 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to San Francisco
Explore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 June 2026.

Wed 22/715:05
SEA
-
SFO
1 stop6h 00m
Southwest
Tue 28/708:55
SFO
-
SEA
1 stop7h 55m
Southwest
Deal found 25/6£134
Tue 21/705:15
SEA
-
SFO
Nonstop2h 20m
United Airlines
Wed 22/722:59
SFO
-
SEA
Nonstop2h 30m
United Airlines
Deal found 25/6£136
Tue 4/805:15
SEA
-
SFO
Nonstop2h 20m
United Airlines
Tue 11/813:55
SFO
-
SEA
Nonstop2h 19m
United Airlines
Deal found 25/6£136
Wed 5/809:25
SEA
-
SFO
2 stops7h 35m
Southwest
Sat 8/806:25
SFO
-
SEA
1 stop5h 35m
Southwest
Deal found 25/6£138
Tue 28/707:00
SEA
-
SFO
2 stops7h 15m
Southwest
Tue 4/809:35
SFO
-
SEA
2 stops10h 40m
Southwest
Deal found 28/6£142
Sat 15/807:20
SEA
-
SFO
Nonstop2h 16m
Delta
Mon 17/806:20
SFO
-
SEA
Nonstop2h 11m
Delta
Deal found 25/6£145
Sat 15/817:56
SEA
-
SFO
Nonstop2h 16m
Alaska Airlines
Mon 17/809:00
SFO
-
SEA
Nonstop2h 15m
Alaska Airlines
Deal found 26/6£146
Tue 4/805:15
SEA
-
SFO
Nonstop2h 20m
United Airlines
Wed 5/822:59
SFO
-
SEA
Nonstop2h 30m
United Airlines
Deal found 24/6£148

Find flight deals from Seattle to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 June 2026.

Round-trip from

£134

One-way from

£67

Popular in

June

Cheapest in

January

Average price

£236

Good round-trip deal

£198 or less

Good one-way deal

£242 or less
Southwest
  • Southwest
  • 4/8-5/8
  • 2 total stops
  • 11h 45m total
  • Seattle to San Francisco
Southwest
  • Southwest
  • 8/8
  • 1 total stop
  • 5h 25m total
  • Seattle to San Francisco
Highest demand for flights based on searches. 10% potential increase in price (£18 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 June 2026.
Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 1/9

16:10-21:20

1 stop5h 10m

San Francisco

Sat 5/9

06:25-12:00

1 stop5h 35m

£134

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 12/8

16:10-21:20

1 stop5h 10m

San Francisco

Tue 18/8

14:35-21:15

1 stop6h 40m

£134

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 8/10

15:46-18:03

Nonstop2h 17m

San Francisco

Thu 8/10

20:43-23:03

Nonstop2h 20m

£153
Fastest return journey

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 30/7

14:30-16:49

Nonstop2h 19m

San Francisco

Wed 5/8

10:40-12:51

Nonstop2h 11m

£159

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 12/8

11:40-18:15

1 stop6h 35m

San Francisco

Wed 26/8

16:45-23:25

1 stop6h 40m

£166

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 6/8

09:10-16:30

1 stop7h 20m

San Francisco

Thu 13/8

12:30-19:35

1 stop7h 05m

£167

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 1/9

16:10-21:20

1 stop5h 10m

San Francisco

Sun 6/9

14:25-23:30

1 stop9h 05m

£172
Cheapest one-way

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/8

09:20-14:45

1 stop5h 25m

£67

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 21/7

06:15-15:00

1 stop8h 45m

£67

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 9/9

13:45-21:40

1 stop7h 55m

£67

Flights are sorted by cheapest return flights first.

Deals found on 24/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

The best time to book flights from Seattle to San Francisco is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £142). Flying from Seattle to San Francisco in June is currently the most expensive (average of £245). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SFO?

Find hourly flight availability from Seattle to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 June 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 73% on flights from Seattle to San Francisco by exploring options for tickets at midday.

How much does it cost for a return flight from Seattle to San Francisco?

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 29 June 2026.
See what other customers who have flown with Alaska Airlines from Seattle to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Kevin,Dec 2022

SEA - SAN

I could not get my devices to work on Alaska wi-fi network.

Crew

8.5

Food

7.0

Boarding

8.1

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
10.0
Excellent

Kevin,Dec 2022

SEA - SAN

I could not get my devices to work on Alaska wi-fi network.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Seattle to San Francisco?

    You will need to book a flight from Seattle/Tacoma Intl to San Francisco if you want to fly from Seattle to San Francisco. At least 1 airline has flights from Seattle/Tacoma Intl (SEA) to San Francisco (SFO) on a regular basis. There are 70 flights to San Francisco from the Seattle airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SEA to SFO to be around 2h 19m.

  • How popular is this Seattle to San Francisco flight route?

  • How long is the flight from Seattle to San Francisco?

    Departing from Seattle to San Francisco will take you 2h 17m. The distance between Seattle and San Francisco is about 679 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to San Francisco round-trip?

    According to our current data, Alaska Airlines (£136), offers the cheapest pricing from Seattle to San Francisco. This flight start at 33% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to San Francisco one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as £55. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Seattle to San Francisco for a low price.

  • What are the most reliable airlines from Seattle to San Francisco?

    No one likes to see their flight delayed. When booking a flight from Seattle to San Francisco consider choosing WestJet (67%), Aeromexico (64%) or Scandinavian Airlines (54%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to San Francisco?

    On average you can expect to pay £282 for a flight from Seattle to San Francisco. The cheapest flight overall is £69 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at £119.

  • Can I find deals for flights from Seattle to San Francisco that include hotel bookings?

    Yes. In addition to deals on Seattle to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Francisco.

  • Can I find deals for business class flights from Seattle to San Francisco?

    Yes. Cheapflights offers flight deals from Seattle to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £142). Flying from Seattle to San Francisco in June is currently the most expensive (average of £245). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
San Bruno
Newark
Bodega Bay
South San Francisco
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Seattle to San Francisco

Discover the top airline that operate flights from Seattle to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£136Average£251FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to San Francisco?

Cheapflights makes it easy to find Seattle to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Seattle to San Francisco?

Cheapflights helps you find that perfect flight to San Francisco from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Seattle to San Francisco with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to San Francisco with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to San Francisco become cheaper?

Of course! You can now track prices for flights from Seattle to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.