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Cheap flights from San Francisco to Seattle from $88

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 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
25 Jan — 1 Feb1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in January or February, booked 64 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 26 December 2025.

Wed 24/1205:45SFO - SEA
Nonstop2h 21mDelta
Wed 14/121:20SEA - SFO
Nonstop2h 08mDelta
Deal found 23/12$532
Fri 26/1211:53SFO - SEA
1 stop5h 05mAlaska Airlines
Fri 23/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 23/12$569
Fri 26/1206:00SFO - SEA
Nonstop2h 23mUnited Airlines
Fri 23/112:35SEA - SFO
Nonstop2h 18mUnited Airlines
Deal found 23/12$584
Wed 24/1214:35SFO - SEA
1 stop7h 55mSouthwest
Wed 14/114:05SEA - SFO
1 stop8h 15mSouthwest
Deal found 23/12$587
Fri 26/1216:55SFO - SEA
2 stops8h 30mSouthwest
Fri 23/105:15SEA - SFO
1 stop6h 35mSouthwest
Deal found 23/12$595
Mon 29/1221:55SFO - SEA
1 stop11h 25mSouthwest
Thu 15/105:15SEA - SFO
1 stop9h 35mSouthwest
Deal found 24/12$604
Wed 31/1207:45SFO - SEA
2 stops7h 16mAlaska Airlines
Wed 31/1217:59SEA - SFO
Nonstop2h 18mAlaska Airlines
Deal found 26/12$651

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 26 December 2025.

Round-trip from

$174

One-way from

$88

Popular in

December

Cheapest in

January

Average price

$455

Good round-trip deal

$279 or less

Good one-way deal

$161 or less
Delta
  • Delta
  • 23/1-24/1
  • Nonstop
  • 4h 41m total
  • San Francisco to Seattle
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Delta
  • Delta
  • 22/2
  • Nonstop
  • 2h 18m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($39 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.
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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 26 December 2025.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Fly from

San Francisco

Fly to

Seattle

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 31/1

18:18-20:34

Nonstop2h 16m

Seattle/Tacoma Intl

Mon 2/2

20:50-23:03

Nonstop2h 13m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 22/1

16:10-18:27

Nonstop2h 17m

Seattle/Tacoma Intl

Sun 25/1

09:25-11:43

Nonstop2h 18m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 12/2

05:55-08:13

Nonstop2h 18m

Seattle/Tacoma Intl

Sun 15/2

20:30-22:41

Nonstop2h 11m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 1/2

09:00-11:21

Nonstop2h 21m

Seattle/Tacoma Intl

Sun 1/2

19:45-21:58

Nonstop2h 13m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 31/1

09:05-11:30

Nonstop2h 25m

Seattle/Tacoma Intl

Sun 1/2

06:18-08:41

Nonstop2h 23m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 26/1

06:00-08:22

Nonstop2h 22m

Seattle/Tacoma Intl

Tue 27/1

15:30-17:49

Nonstop2h 19m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 17/1

19:40-21:58

Nonstop2h 18m

Seattle/Tacoma Intl

Fri 23/1

19:45-21:58

Nonstop2h 13m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 6/2

16:40-18:58

Nonstop2h 18m

Seattle/Tacoma Intl

Sun 8/2

21:20-23:30

Nonstop2h 10m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 18/2

08:42-11:03

Nonstop2h 21m

Seattle/Tacoma Intl

Sat 21/2

20:41-22:56

Nonstop2h 15m

$174

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 23/1

14:35-16:54

Nonstop2h 19m

Seattle/Tacoma Intl

Thu 29/1

07:15-09:35

Nonstop2h 20m

$174

Flights are sorted by cheapest return flights first.

Deals found on 25/12

Showing 1-10 of 22 results
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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 19 December 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 64 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $122). Flying from San Francisco to Seattle in May is currently the most expensive (average of $204). 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 26 December 2025.

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.

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 12 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 16m. Airlines will cover a distance of 1093 km. Most flights are nonstop.

  • 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 Horizon Air(100%), Aeromexico(95%) or Air China(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 $160. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $622 on average, our data indicates $220 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $122). Flying from San Francisco to Seattle in May is currently the most expensive (average of $204). 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
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?

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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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