Find flights
Deals
When to book
FAQs

Cheap flights from San Francisco to Seattle from $85

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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
27 Feb — 6 Mar1
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 March, booked 64 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 28 January 2026.

Tue 17/221:18
SFO
-
SEA
Nonstop2h 12m
United Airlines
Wed 18/209:19
SEA
-
SFO
Nonstop2h 19m
United Airlines
Deal found 26/1$168
Sat 28/205:55
SFO
-
SEA
Nonstop2h 18m
Delta
Mon 2/311:35
SEA
-
SFO
Nonstop2h 13m
Delta
Deal found 27/1$170
Tue 7/419:29
SFO
-
SEA
Nonstop2h 19m
Delta
Tue 21/413:35
SEA
-
SFO
Nonstop2h 24m
Delta
Deal found 26/1$190
Mon 23/320:59
SFO
-
SEA
Nonstop2h 17m
Alaska Airlines
Sat 28/307:03
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Deal found 26/1$196
Thu 9/406:00
SFO
-
SEA
Nonstop2h 16m
Delta
Sat 18/421:20
SEA
-
SFO
Nonstop2h 15m
Delta
Deal found 27/1$197
Tue 3/309:21
SFO
-
SEA
1 stop5h 30m
Alaska Airlines
Tue 3/318:21
SEA
-
SFO
Nonstop2h 15m
Alaska Airlines
Deal found 27/1$203
Mon 13/406:30
SFO
-
SEA
Nonstop2h 17m
Alaska Airlines
Mon 20/421:42
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Deal found 26/1$204
Tue 24/211:34
SFO
-
SEA
Nonstop2h 21m
Alaska Airlines
Tue 3/314:43
SEA
-
SFO
1 stop5h 04m
Alaska Airlines
Deal found 27/1$212
Mon 9/321:32
SFO
-
SEA
1 stop13h 22m
Alaska Airlines
Thu 12/313:32
SEA
-
SFO
Nonstop2h 16m
Alaska Airlines
Deal found 27/1$216
Sat 28/216:40
SFO
-
SEA
1 stop6h 10m
Southwest
Mon 2/308:35
SEA
-
SFO
1 stop6h 15m
Southwest
Deal found 26/1$217

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 28 January 2026.

Round-trip from

$168

One-way from

$85

Popular in

November

Cheapest in

February

Average price

$399

Good one-way deal

$370 or less
United Airlines
  • United Airlines
  • 17/2-26/2
  • Nonstop
  • 4h 31m total
  • San Francisco to Seattle
Search Deals
Delta
  • Delta
  • 24/2
  • Nonstop
  • 2h 19m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($53 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 28 January 2026.
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

Thu 5/3

05:55-08:13

Nonstop2h 18m

Seattle/Tacoma Intl

Wed 18/3

07:25-09:51

Nonstop2h 26m

$168

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 24/2

10:20-12:38

Nonstop2h 18m

Seattle/Tacoma Intl

Sat 28/2

07:10-09:30

Nonstop2h 20m

$168

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 18/2

05:55-08:13

Nonstop2h 18m

Seattle/Tacoma Intl

Sat 21/2

20:30-22:41

Nonstop2h 11m

$168

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 9/3

21:32-14:53

1 stop17h 21m

Seattle/Tacoma Intl

Fri 13/3

20:41-22:56

Nonstop2h 15m

$216

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 23/3

16:55-01:40

1 stop8h 45m

Seattle/Tacoma Intl

Sat 28/3

06:35-14:00

1 stop7h 25m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 7/3

17:55-01:25

1 stop7h 30m

Seattle/Tacoma Intl

Mon 9/3

14:40-21:30

1 stop6h 50m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 9/3

16:55-01:40

1 stop8h 45m

Seattle/Tacoma Intl

Wed 11/3

06:00-15:15

1 stop9h 15m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 11/3

06:25-13:05

1 stop6h 40m

Seattle/Tacoma Intl

Thu 12/3

14:35-23:20

1 stop8h 45m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 28/2

05:30-12:20

1 stop6h 50m

Seattle/Tacoma Intl

Mon 2/3

08:35-14:50

1 stop6h 15m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/3

06:45-15:45

2 stops9h 00m

Seattle/Tacoma Intl

Fri 13/3

05:30-13:50

1 stop8h 20m

$225

Flights are sorted by cheapest return flights first.

Deals found on 26/1

Showing 1-10 of 23 results
1
2
3

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 23 January 2026.

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 $114). Flying from San Francisco to Seattle in May is currently the most expensive (average of $197). 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 28 January 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.

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 10 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 18m. 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 WestJet(87%), Aeromexico(86%) or Air France(85%), 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 $142. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $692 on average, our data indicates $436 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 $114). Flying from San Francisco to Seattle in May is currently the most expensive (average of $197). 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

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 San Francisco to Seattle

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

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.