Seattle

$79+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
Aug 2 — Aug 91
We work with more than 300 partners to bring you better travel deals

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 79 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 July 28, 2025.

Round-trip from

$151
(Alaska Airlines)

One-way from

$79
(Delta)

Popular in

July

Cheapest in

October

Average price

$287

Good round-trip deal

$226 or less

Good one-way deal

$145 or less
From San Francisco to Seattle/Tacoma Intl
One-way flight from San Francisco to Seattle/Tacoma Intl
Highest demand for flights based on searches. 10% potential increase in price ($27 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from San Francisco to Seattle/Tacoma Intl.
Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.

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 July 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 8/218:00 amSFO - SEA
Nonstop2h 16mAlaska Airlines
Thu 8/211:40 pmSEA - SFO
Nonstop2h 12mAlaska Airlines
Deal found 7/27$151
This WhyPayMore deal was found by Cheapflights users on 7/27. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/319:19 pmSFO - SEA
Nonstop2h 16mHawaiian Airlines
Wed 9/37:50 amSEA - SFO
1 stop4h 40mHawaiian Airlines
Deal found 7/27$153
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/231:00 pmSFO - SEA
1 stop9h 30mSouthwest
Tue 8/264:10 pmSEA - SFO
1 stop5h 15mSouthwest
Deal found 7/27$162
This Delta deal was found by Cheapflights users on 7/28. 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.
Fri 8/225:55 amSFO - SEA
Nonstop2h 10mDelta
Mon 8/259:20 pmSEA - SFO
Nonstop2h 13mDelta
Deal found 7/28$177
This lastminute.com deal was found by Cheapflights users on 7/27. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/132:42 pmSFO - SEA
Nonstop2h 12mMultiple Airlines
Mon 9/155:40 pmSEA - SFO
1 stop3h 38mMultiple Airlines
Deal found 7/27$180
This Frontier deal was found by Cheapflights users on 7/27. 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.
Sat 8/166:37 amSFO - SEA
1 stop12h 09mFrontier
Sat 8/2312:40 pmSEA - SFO
1 stop9h 53mFrontier
Deal found 7/27$198
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:00 amSFO - SEA
1 stop7h 01mAmerican Airlines
Wed 8/206:30 amSEA - SFO
1 stop6h 26mAmerican Airlines
Deal found 7/27$203
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:30 amSFO - SEA
Nonstop2h 18mUnited Airlines
Mon 8/185:10 amSEA - SFO
Nonstop2h 12mUnited Airlines
Deal found 7/26$205

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 July 28, 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 8/21

8:00 am-10:16 am

Nonstop2h 16m

Seattle/Tacoma Intl

Thu 8/21

1:40 pm-3:52 pm

Nonstop2h 12m

$151

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 8/31

9:19 pm-11:35 pm

Nonstop2h 16m

Seattle/Tacoma Intl

Wed 9/3

7:50 am-12:30 pm

1 stop4h 40m

$153

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 8/25

5:55 am-8:05 am

Nonstop2h 10m

Seattle/Tacoma Intl

Mon 8/25

9:20 pm-11:33 pm

Nonstop2h 13m

$157

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/23

1:00 pm-10:30 pm

1 stop9h 30m

Seattle/Tacoma Intl

Tue 8/26

4:10 pm-9:25 pm

1 stop5h 15m

$162

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 9/13

2:42 pm-4:54 pm

Nonstop2h 12m

Seattle/Tacoma Intl

Mon 9/15

5:40 pm-9:18 pm

1 stop3h 38m

$180

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/16

6:37 am-6:46 pm

1 stop12h 09m

Seattle/Tacoma Intl

Sat 8/23

12:40 pm-10:33 pm

1 stop9h 53m

$198

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 8/13

7:00 am-2:01 pm

1 stop7h 01m

Seattle/Tacoma Intl

Wed 8/20

6:30 am-12:56 pm

1 stop6h 26m

$203

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/16

6:30 am-8:48 am

Nonstop2h 18m

Seattle/Tacoma Intl

Mon 8/18

5:10 am-7:22 am

Nonstop2h 12m

$205

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 9/5

5:55 am-8:05 am

Nonstop2h 10m

$79

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 8/27

4:25 pm-9:33 pm

1 stop5h 08m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 15 results
1
2

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

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 July 25, 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $238). Flying from San Francisco to Seattle in June is currently the most expensive (average of $389). 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 July 28, 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 26% 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 July 20, 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.

Weekly flight availability from San Francisco to Seattle

Explore weekly flight availability from San Francisco to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2025.

The most flights from SFO to SEA are scheduled on a Sunday (111 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (70 on average).

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 July 28, 2025.
Read through reviews of airlines operating flights from San Francisco to Seattle, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
8.0
Very good

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 86 daily flights to Seattle from 7 different airlines. 2h 05m 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?

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

    Our cheapest airline available from San Francisco to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as $151 on this airline. Additional options worth looking into are Hawaiian Airlines and Southwest, starting at $153 and $162 round-trip. Alaska Airlines is currently priced 36% below the average price you’ll pay for this route.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $79. American Airlines flights start at $80 while deals on Alaska Airlines start at $82 one-way.

  • 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: Copa Airlines (100%), Scandinavian Airlines (88%), KLM( 85%).

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

    While on average a flight from San Francisco to Seattle is generally $1,324, our data shows the cheapest flight currently is $78. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $117 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $238). Flying from San Francisco to Seattle in June is currently the most expensive (average of $389). 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
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

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.

Top 7 airlines flying from San Francisco to Seattle

Discover the top 7 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$64Average$120FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$221FlexibilityNo cancel feeOn-time62%
DeltaCheapest$113Average$200FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$127Average$258FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$133Average$247FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$136Average$266FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$226Average$388FlexibilityNo cancel feeOn-time71%

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.