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$76+ Cheap flights from San Francisco to Seattle (SFO - SEA)

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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
Nov 9 — Nov 161
Sun 11/9
Sun 11/16
1 adult, Economy
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Find cheap flights from San Francisco to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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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 Friday or Thursday and return on a Friday

Cheap 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 October 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$134
(Cheapflightsfares)

One-way from

$76
(Southwest)

Popular in

December

Cheapest in

January

Average price

$245

Good round-trip deal

$232 or less

Good one-way deal

$128 or less
Provider with most accurate pricing for San Francisco-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Seattle/Tacoma Intl flights.
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From San Francisco to Seattle/Tacoma Intl
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One-way flight from San Francisco to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 4% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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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Find flight deals from San Francisco to Seattle

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 October 10, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:00 amSFO - SEA
Nonstop2h 24mAlaska Airlines
Wed 11/1211:10 amSEA - SFO
1 stop5h 11mAlaska Airlines
Deal found 10/7$134
This Delta deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:00 amSFO - SEA
Nonstop2h 20mDelta
Mon 11/312:45 pmSEA - SFO
1 stop5h 00mDelta
Deal found 10/8$137
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:25 amSFO - SEA
Nonstop2h 18mAlaska Airlines
Tue 12/24:00 pmSEA - SFO
1 stop5h 17mAlaska Airlines
Deal found 10/7$138
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:00 amSFO - SEA
Nonstop2h 24mAlaska Airlines
Tue 11/48:00 amSEA - SFO
1 stop4h 35mAlaska Airlines
Deal found 10/8$139
This Booking.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:15 pmSFO - SEA
1 stop23h 29mFrontier
Fri 10/248:43 pmSEA - SFO
1 stop25h 46mFrontier
Deal found 10/9$140
This Alaska Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:11 pmSFO - SEA
1 stop3h 39mAlaska Airlines
Fri 10/318:25 pmSEA - SFO
Nonstop2h 16mAlaska Airlines
Deal found 10/8$141
This Orbitz deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:55 pmSFO - SEA
1 stop11h 23mMultiple Airlines
Mon 11/311:35 amSEA - SFO
1 stop5h 47mMultiple Airlines
Deal found 10/8$143
This Orbitz deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:45 amSFO - SEA
1 stop9h 31mMultiple Airlines
Wed 10/291:31 pmSEA - SFO
Nonstop2h 12mMultiple Airlines
Deal found 10/7$144
This Alaska Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:00 amSFO - SEA
1 stop6h 43mAlaska Airlines
Fri 10/319:32 pmSEA - SFO
Nonstop2h 18mAlaska Airlines
Deal found 10/8$147
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:11 pmSFO - SEA
1 stop3h 39mAlaska Airlines
Sun 11/29:32 pmSEA - SFO
Nonstop2h 18mAlaska Airlines
Deal found 10/7$148
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:53 amSFO - SEA
1 stop6h 04mAlaska Airlines
Wed 10/291:31 pmSEA - SFO
Nonstop2h 12mAlaska Airlines
Deal found 10/7$149
This Frontier deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:55 pmSFO - SEA
1 stop11h 23mFrontier
Sat 11/112:58 pmSEA - SFO
1 stop9h 29mFrontier
Deal found 10/8$150

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 10, 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

Thu 11/6

5:50 am-1:00 pm

1 stop7h 10m

Seattle/Tacoma Intl

Sat 11/8

7:10 am-12:20 pm

1 stop5h 10m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 2/22

9:40 pm-11:55 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Fri 2/27

7:00 am-9:11 am

Nonstop2h 11m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 12/17

3:35 pm-8:50 pm

1 stop5h 15m

Seattle/Tacoma Intl

Mon 12/22

10:15 pm-12:32 am

Nonstop2h 17m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 2/21

7:40 pm-9:57 pm

Nonstop2h 17m

Seattle/Tacoma Intl

Fri 2/27

7:00 am-9:11 am

Nonstop2h 11m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 1/6

1:00 pm-8:31 pm

1 stop7h 31m

Seattle/Tacoma Intl

Wed 1/7

2:00 pm-10:12 pm

1 stop8h 12m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/31

6:00 am-8:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Sun 11/2

9:25 pm-11:33 pm

Nonstop2h 08m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 12/6

5:05 pm-11:25 pm

1 stop6h 20m

Seattle/Tacoma Intl

Mon 12/8

10:25 am-5:40 pm

1 stop7h 15m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 11/8

12:35 pm-8:50 pm

1 stop8h 15m

Seattle/Tacoma Intl

Wed 11/12

12:40 pm-8:26 pm

1 stop7h 46m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 12/6

3:35 pm-8:55 pm

1 stop5h 20m

Seattle/Tacoma Intl

Tue 12/9

10:25 am-5:40 pm

1 stop7h 15m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 11/20

8:25 am-2:44 pm

1 stop6h 19m

Seattle/Tacoma Intl

Mon 11/24

7:10 am-9:35 am

Nonstop2h 25m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 19 results
1
2

Compare providers for flights from San Francisco to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Seattle in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 round-trip flight from San Francisco to Seattle. Price data was last updated on October 3, 2025.

The best time to book flights from San Francisco to Seattle is 58 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 San Francisco to Seattle?

Currently, September is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $106). Flying from San Francisco to Seattle in May is currently the most expensive (average of $137). 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 October 10, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from San Francisco to Seattle?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Seattle. Price data was last updated on October 5, 2025.

Travelers seeking maximum savings on their San Francisco to Seattle flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for San Francisco to Seattle flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Seattle trip
Airports
SFO

Save time by ordering meals for pickup from restaurants participating in the SFO2Go program during busy times.

Read more about SFOby Harriet Baskas
SEA

Use the Link light rail for an inexpensive, convenient trip from SEA to downtown Seattle in under 40 minutes.

Read more about SEAby Brandon Schultz
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated October 10, 2025.
Read through reviews of airlines operating flights from San Francisco to Seattle, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,049 reviews
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,775 reviews
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,966 reviews
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Frontier
5.8
Fair
3,143 reviews
Alaska Airlines
8.0
Very good
11,049 reviews

Comfort

7.8

Overall

8.0

Crew

8.5

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

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.

  • What airports do I use to fly from San Francisco to Seattle?

    Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from San Francisco. Booking flights from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 76 daily flights to Seattle from 6 different airlines. 2h 07m is how long a flight from San Francisco to Seattle/Tacoma Intl will take if you book a nonstop flight.

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

    Within the past month, 131 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.

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

    There are many flights that can get you from San Francisco to Seattle in 2h 15m. Fly via Delta or Alaska Airlines to get the fastest option. The distance from San Francisco to Seattle is about 679 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from San Francisco to Seattle round-trip?

    Our cheapest airline available from San Francisco to Seattle is Frontier. Our recent data shows that you can find tickets from as low as $100 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $110 and $128 round-trip. Frontier is currently priced 59% below the average price you’ll pay for this route.

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

    Before booking your flight to Seattle from San Francisco, check out the most reliable airlines to get you to your destination on time: Air China (91%), Scandinavian Airlines (90%), WestJet( 86%).

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

    While on average a flight from San Francisco to Seattle is generally $786, our data shows the cheapest flight currently is $68. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $109 for that flight.

  • 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 vacation 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, September is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $106). Flying from San Francisco to Seattle in May is currently the most expensive (average of $137). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from San Francisco to Seattle

Discover the top 6 airlines that operate flights from San Francisco to Seattle. 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 2,558,603 searches. Data last updated October 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$219FlexibilityNo cancel feeOn-time62%
DeltaCheapest$110Average$199FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$128Average$266FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$130Average$270FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$137Average$251FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$236Average$391FlexibilityNo cancel feeOn-time71%

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