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$73+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
jul. 12 — jul. 191
sáb. 7/12
sáb. 7/19
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 75 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 julio 7, 2025.

Round-trip from

$138
(Kiwi.com)

One-way from

$73
(iWofly)

Popular in

June

Cheapest in

October

Average price

$281

Good round-trip deal

$246 or less

Good one-way deal

$162 or less
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. 9% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 7, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
sáb. 8/236:00 amSFO - SEA
Nonstop2h 07mHawaiian Airlines
dom. 8/247:00 amSEA - SFO
Nonstop2h 12mHawaiian Airlines
Deal found 7/5$138
This iWofly deal was found by Cheapflights users on 7/6. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/319:19 pmSFO - SEA
Nonstop2h 16mAlaska Airlines
mié. 9/36:05 pmSEA - SFO
Nonstop2h 15mAlaska Airlines
Deal found 7/6$140
This Trip.com deal was found by Cheapflights users on 7/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/236:00 amSFO - SEA
Nonstop2h 07mMultiple Airlines
dom. 8/247:00 amSEA - SFO
Nonstop2h 12mMultiple Airlines
Deal found 7/5$144
This Delta deal was found by Cheapflights users on 7/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/208:55 pmSFO - SEA
Nonstop2h 20mDelta
dom. 8/247:28 amSEA - SFO
Nonstop2h 23mDelta
Deal found 7/7$147
This Southwest deal was found by Cheapflights users on 7/6. 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.
mié. 8/67:00 amSFO - SEA
2 stops7h 10mSouthwest
jue. 8/215:30 pmSEA - SFO
1 stop5h 10mSouthwest
Deal found 7/6$150
This American Airlines deal was found by Cheapflights users on 7/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:00 amSFO - SEA
1 stop7h 01mAmerican Airlines
mar. 8/196:30 amSEA - SFO
1 stop6h 26mAmerican Airlines
Deal found 7/7$159

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 julio 7, 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

sáb. 8/23

6:00 am-8:07 am

Nonstop2h 07m

Seattle/Tacoma Intl

dom. 8/24

7:00 am-9:12 am

Nonstop2h 12m

$138

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

dom. 8/31

9:19 pm-11:35 pm

Nonstop2h 16m

Seattle/Tacoma Intl

mié. 9/3

6:05 pm-8:20 pm

Nonstop2h 15m

$140

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

sáb. 8/23

6:00 am-8:07 am

Nonstop2h 07m

Seattle/Tacoma Intl

dom. 8/24

7:00 am-9:12 am

Nonstop2h 12m

$144

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

sáb. 8/23

4:35 pm-6:46 pm

Nonstop2h 11m

Seattle/Tacoma Intl

dom. 8/24

7:28 am-9:51 am

Nonstop2h 23m

$148

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

mié. 8/6

7:00 am-2:10 pm

2 stops7h 10m

Seattle/Tacoma Intl

jue. 8/21

5:30 pm-10:40 pm

1 stop5h 10m

$150

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

mié. 8/13

7:00 am-2:01 pm

1 stop7h 01m

Seattle/Tacoma Intl

mar. 8/19

6:30 am-12:56 pm

1 stop6h 26m

$159

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

vie. 10/3

6:00 am-8:07 am

Nonstop2h 07m

$73

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

vie. 9/19

6:20 am-3:45 pm

2 stops9h 25m

$75

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

lun. 8/4

8:49 pm-11:02 pm

Nonstop2h 13m

$77

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

lun. 8/4

5:55 am-8:05 am

Nonstop2h 10m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

Showing 1-10 of 13 results
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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 June 27, 2025.

The best time to book flights from San Francisco to Seattle is 64 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 $388). 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 julio 7, 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 24% 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 6, 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 julio 7, 2025.

The most flights from SFO to SEA are scheduled on a Monday (115 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 julio 7, 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,257 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.8
Good
2,549 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,846 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 87 daily flights to Seattle from 7 different airlines. 1h 56m 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, 136 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.

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

    Our cheapest airline available from San Francisco to Seattle is Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $138 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $140 and $147 round-trip. Hawaiian Airlines is currently priced 42% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $73. Hawaiian Airlines flights start at $77 while deals on American Airlines start at $80 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%), Aeromexico (97%), WestJet( 90%).

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

    While on average a flight from San Francisco to Seattle is generally $1,337, our data shows the cheapest flight currently is $101. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $104 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 $388). 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 San Francisco?

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

Browse thousands of different options on Cheapflights for your next trip

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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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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 julio 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$64Average$128FlexibilityNo cancel feeOn-time65%
FrontierCheapest$101Average$218FlexibilityNo cancel feeOn-time62%
DeltaCheapest$115Average$199FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$127Average$254FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$134Average$251FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$135Average$256FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$226Average$385FlexibilityNo cancel feeOn-time71%

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