Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to San Francisco from $110

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
22 May — 29 May1
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 September, booked 78 days in advance, depart on a Wednesday or Monday 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 22 April 2026.

Tue 26/515:33
SEA
-
SFO
Nonstop2h 14m
United Airlines
Sat 30/521:10
SFO
-
SEA
Nonstop2h 22m
United Airlines
Deal found 21/4$197
Wed 20/507:08
SEA
-
SFO
Nonstop2h 18m
United Airlines
Mon 25/507:00
SFO
-
SEA
Nonstop2h 22m
United Airlines
Deal found 22/4$202
Fri 14/821:42
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Sat 15/820:28
SFO
-
SEA
Nonstop2h 13m
Alaska Airlines
Deal found 21/4$205
Tue 12/514:53
SEA
-
SFO
Nonstop2h 21m
Alaska Airlines
Tue 12/519:59
SFO
-
SEA
Nonstop2h 19m
Alaska Airlines
Deal found 17/4$212
Fri 14/821:42
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Thu 20/806:00
SFO
-
SEA
Nonstop2h 11m
Alaska Airlines
Deal found 21/4$214
Fri 5/607:30
SEA
-
SFO
1 stop6h 25m
Southwest
Tue 9/608:55
SFO
-
SEA
1 stop7h 55m
Southwest
Deal found 22/4$219
Wed 3/617:35
SEA
-
SFO
1 stop5h 40m
Southwest
Sat 6/617:55
SFO
-
SEA
1 stop7h 15m
Southwest
Deal found 21/4$225
Sat 4/707:45
SEA
-
SFO
1 stop12h 05m
Southwest
Fri 10/718:45
SFO
-
SEA
1 stop6h 55m
Southwest
Deal found 21/4$226
Tue 12/507:08
SEA
-
SFO
Nonstop2h 18m
United Airlines
Tue 19/522:35
SFO
-
SEA
Nonstop2h 37m
United Airlines
Deal found 20/4$230

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 22 April 2026.

Round-trip from

$197

One-way from

$110

Popular in

April

Cheapest in

January

Average price

$423

Good one-way deal

$935 or less
United Airlines
  • United Airlines
  • 26/5-30/5
  • Nonstop
  • 4h 36m total
  • Seattle to San Francisco
Search Deals
Delta
  • Delta
  • 20/5
  • Nonstop
  • 2h 19m total
  • Seattle to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
Search Deals

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 647,157 searches. Data last updated 22 April 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

Wed 27/5

12:10-18:30

1 stop6h 20m

San Francisco

Thu 28/5

15:00-23:05

2 stops8h 05m

$299

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 12/5

10:00-12:29

Nonstop2h 29m

San Francisco

Sat 16/5

17:37-19:55

Nonstop2h 18m

$303

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 8/5

19:36-21:49

Nonstop2h 13m

San Francisco

Mon 18/5

22:35-01:12

Nonstop2h 37m

$320

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 8/7

07:15-15:44

1 stop8h 29m

San Francisco

Mon 13/7

20:59-23:19

Nonstop2h 20m

$320

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 21/5

10:00-12:29

Nonstop2h 29m

San Francisco

Sun 24/5

05:55-08:17

Nonstop2h 22m

$331

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 20/5

05:30-15:20

2 stops9h 50m

San Francisco

Wed 27/5

11:25-21:00

2 stops9h 35m

$345

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 14/5

10:00-12:29

Nonstop2h 29m

San Francisco

Wed 20/5

05:55-08:17

Nonstop2h 22m

$345

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 16/5

11:15-18:55

1 stop7h 40m

San Francisco

Tue 19/5

07:20-20:20

2 stops13h 00m

$346
Fastest return journey

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 9/10

21:25-23:41

Nonstop2h 16m

San Francisco

Mon 12/10

06:05-08:26

Nonstop2h 21m

$359

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 29/5

05:00-12:35

2 stops7h 35m

San Francisco

Thu 4/6

15:45-23:50

2 stops8h 05m

$366

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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?

Use this chart to determine the optimal time to book a return flight from Seattle to San Francisco. Price data was last updated on 17 April 2026.

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 $261). Flying from Seattle to San Francisco in April is currently the most expensive (average of $423). 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 22 April 2026.

One of the essential ways to save on airfare from Seattle to San Francisco is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 69% on airfare.

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

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.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 35 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For as low as $320, Southwest can have you in San Francisco from Seattle in 2h 13m. Airlines will cover a distance of 1093 km. This flight may include one or multiple stops.

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

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $78. Users have also found prices from $81 and $82 on Alaska Airlines and Delta, respectively.

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

    The top 3 most reliable airlines when flying from Seattle to San Francisco are Aeromexico (89%), Air France (83%) and SWISS (83%).

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

    Looking for the cheapest flight from Seattle to San Francisco? While on average our users pay $1,026, our data indicates the cheapest price to be $110. The most popular route (Seattle/Tacoma Intl - San Francisco), is priced around $325.

  • 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 $261). Flying from Seattle to San Francisco in April is currently the most expensive (average of $423). 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
Sausalito
Davis
Milpitas
Vallejo

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.

Alternative routes for Seattle to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Los Angeles flights
Seattle to Las Vegas flights
Seattle to Los Angeles 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?

When you search for this flight from Seattle to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to San Francisco from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Seattle to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.