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Cheap flights from San Francisco to Seattle from $124

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
17 May — 24 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in February or September, booked 71 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from San Francisco to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Seattle
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2026.

Wed 6/509:00
SFO
-
SEA
Nonstop2h 22m
Alaska Airlines
Wed 6/514:53
SEA
-
SFO
Nonstop2h 21m
Alaska Airlines
Deal found 12/4$212
Wed 6/520:58
SFO
-
SEA
Nonstop2h 31m
United Airlines
Tue 12/507:08
SEA
-
SFO
Nonstop2h 18m
United Airlines
Deal found 13/4$219
Wed 13/510:30
SFO
-
SEA
1 stop7h 15m
Southwest
Wed 20/512:10
SEA
-
SFO
1 stop6h 20m
Southwest
Deal found 13/4$247
Tue 16/617:20
SFO
-
SEA
2 stops7h 20m
Southwest
Wed 24/615:00
SEA
-
SFO
1 stop7h 30m
Southwest
Deal found 15/4$248
Wed 13/514:50
SFO
-
SEA
1 stop8h 45m
Southwest
Tue 26/511:35
SEA
-
SFO
2 stops8h 20m
Southwest
Deal found 13/4$254
Wed 13/505:55
SFO
-
SEA
Nonstop2h 22m
Delta
Sat 16/521:45
SEA
-
SFO
Nonstop2h 20m
Delta
Deal found 12/4$261
Wed 10/615:35
SFO
-
SEA
1 stop9h 05m
Southwest
Wed 17/606:30
SEA
-
SFO
2 stops7h 45m
Southwest
Deal found 14/4$262
Thu 7/513:35
SFO
-
SEA
Nonstop2h 26m
Delta
Wed 13/521:45
SEA
-
SFO
Nonstop2h 20m
Delta
Deal found 13/4$264
Wed 6/514:57
SFO
-
SEA
Nonstop2h 19m
Delta
Fri 8/507:15
SEA
-
SFO
Nonstop2h 19m
Delta
Deal found 13/4$275
Sat 23/522:59
SFO
-
SEA
Nonstop2h 14m
United Airlines
Tue 26/515:33
SEA
-
SFO
Nonstop2h 14m
United Airlines
Deal found 16/4$284

Find flight deals from San Francisco to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Seattle (SEA). 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 17 April 2026.

Round-trip from

$212

One-way from

$124

Popular in

November

Cheapest in

February

Average price

$372

Good one-way deal

$171 or less
Alaska Airlines
  • Alaska Airlines
  • 6/5-6/5
  • Nonstop
  • 4h 43m total
  • San Francisco to Seattle
Search Deals
Southwest
  • Southwest
  • 16/6
  • 1 total stop
  • 6h 15m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 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 San Francisco to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Seattle 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 17 April 2026.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 6/5

07:20-17:45

2 stops10h 25m

Seattle/Tacoma Intl

Sat 9/5

05:10-12:35

2 stops7h 25m

$303

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 30/5

20:30-22:55

Nonstop2h 25m

Seattle/Tacoma Intl

Sat 6/6

14:45-16:57

Nonstop2h 12m

$303

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 4/5

05:59-08:19

Nonstop2h 20m

Seattle/Tacoma Intl

Mon 4/5

17:00-19:20

Nonstop2h 20m

$308

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 16/6

17:20-00:40

2 stops7h 20m

Seattle/Tacoma Intl

Mon 22/6

14:25-21:50

1 stop7h 25m

$318

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 21/8

17:31-00:09

1 stop6h 38m

Seattle/Tacoma Intl

Tue 25/8

19:09-21:27

Nonstop2h 18m

$330

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 3/5

05:55-08:13

Nonstop2h 18m

Seattle/Tacoma Intl

Sun 10/5

07:15-09:34

Nonstop2h 19m

$330

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 30/5

11:45-19:40

2 stops7h 55m

Seattle/Tacoma Intl

Sat 6/6

18:40-23:30

1 stop4h 50m

$337

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 1/6

15:00-00:55

2 stops9h 55m

Seattle/Tacoma Intl

Mon 8/6

19:10-00:50

1 stop5h 40m

$343

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 9/5

11:45-19:40

2 stops7h 55m

Seattle/Tacoma Intl

Mon 11/5

11:40-17:50

2 stops6h 10m

$347
Fastest return journey

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 13/7

20:45-23:10

Nonstop2h 25m

Seattle/Tacoma Intl

Sun 19/7

05:00-07:10

Nonstop2h 10m

$358

Flights are sorted by cheapest return flights first.

Deals found on 12/4

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Francisco 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 San Francisco to Seattle

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Seattle. Price data was last updated on 10 April 2026.

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $296). Flying from San Francisco to Seattle in November is currently the most expensive (average of $415). 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 SFO to SEA?

Find hourly flight availability from San Francisco to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 April 2026.

It’s typically best to fly out from San Francisco to Seattle at midday. Doing so could potentially save you 75% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Seattle. 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 San Francisco to Seattle flight route?

    Flights from San Francisco to Seattle/Tacoma Intl have been viewed 9 times in the past calendar month.

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

    Departing from San Francisco to Seattle will take you 2h 25m. Airlines will cover a distance of 1093 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    No one likes to see their flight delayed. When booking a flight from San Francisco to Seattle consider choosing Aeromexico(98%), Copa Airlines(92%) or ITA Airways(91%), as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $144. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $297 on average, our data indicates $177 when flying from San Francisco to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Seattle 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 San Francisco to Seattle?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $296). Flying from San Francisco to Seattle in November is currently the most expensive (average of $415). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Ocean Shores

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Alternative routes for San Francisco to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from San Francisco today with Cheapflights!

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

Cheapflights helps you find that perfect flight to Seattle from San Francisco 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 San Francisco to Seattle with no change fees?

Certainly. Search results for flights to Seattle from San Francisco 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 San Francisco to Seattle become cheaper?

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

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