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$78+ Cheap flights from Seattle to San Francisco (SEA - SFO)

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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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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”

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or September, booked 42 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Seattle to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Francisco (SFO). 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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$149
(Delta)

One-way from

$78
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$237

Good round-trip deal

$214 or less

Good one-way deal

$106 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Francisco flights.
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From Seattle/Tacoma Intl to San Francisco
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One-way flight from Seattle/Tacoma Intl to San Francisco
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Highest demand for flights based on searches. 6% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
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 April 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
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Find flight deals from Seattle to San Francisco

Cheapest flights from Seattle to San Francisco
Explore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This Delta deal was found by Cheapflights users on 4/22. 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.
Sat 5/176:15 amSEA - SFO
Nonstop2h 13mDelta
Sun 5/186:10 amSFO - SEA
Nonstop2h 20mDelta
Deal found 4/22$149
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/2011:20 amSEA - SFO
1 stop5h 05mHawaiian Airlines
Tue 5/279:25 amSFO - SEA
Nonstop2h 10mHawaiian Airlines
Deal found 4/21$150
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 5/2010:00 amSEA - SFO
1 stop6h 25mAlaska Airlines
Tue 5/206:49 pmSFO - SEA
Nonstop2h 11mAlaska Airlines
Deal found 4/22$151
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Mon 5/126:59 pmSEA - SFO
Nonstop2h 14mMultiple Airlines
Mon 5/196:49 pmSFO - SEA
Nonstop2h 11mMultiple Airlines
Deal found 4/22$154
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 5/235:10 amSEA - SFO
Nonstop2h 12mUnited Airlines
Mon 5/266:30 amSFO - SEA
Nonstop2h 19mUnited Airlines
Deal found 4/22$157
This Southwest deal was found by Cheapflights users on 4/22. 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.
Thu 7/36:15 pmSEA - SFO
1 stop5h 10mSouthwest
Mon 7/287:15 pmSFO - SEA
1 stop5h 15mSouthwest
Deal found 4/22$175
This Frontier deal was found by Cheapflights users on 4/22. 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 5/106:00 amSEA - SFO
1 stop9h 17mFrontier
Sat 5/174:17 pmSFO - SEA
1 stop8h 27mFrontier
Deal found 4/22$178

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to San Francisco 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 April 22, 2025.
Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Seattle

Fly to

San Francisco

Route

Depart

Return

Price

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 5/17

6:15 am-8:28 am

Nonstop2h 13m

San Francisco

Sun 5/18

6:10 am-8:30 am

Nonstop2h 20m

$149

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 5/20

11:20 am-4:25 pm

1 stop5h 05m

San Francisco

Tue 5/27

9:25 am-11:35 am

Nonstop2h 10m

$150

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 5/20

10:00 am-4:25 pm

1 stop6h 25m

San Francisco

Tue 5/20

6:49 pm-9:00 pm

Nonstop2h 11m

$151

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 5/12

6:59 pm-9:13 pm

Nonstop2h 14m

San Francisco

Mon 5/19

6:49 pm-9:00 pm

Nonstop2h 11m

$154

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 7/3

6:15 pm-11:25 pm

1 stop5h 10m

San Francisco

Mon 7/28

7:15 pm-12:30 am

1 stop5h 15m

$175

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 5/10

6:00 am-3:17 pm

1 stop9h 17m

San Francisco

Sat 5/17

4:17 pm-12:44 am

1 stop8h 27m

$178

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 6/5

7:27 pm-9:43 pm

Nonstop2h 16m

San Francisco

Thu 6/12

6:30 am-8:49 am

Nonstop2h 19m

$227

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 5/28

5:59 pm-11:53 pm

1 stop5h 54m

$78

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 5/23

5:10 am-7:22 am

Nonstop2h 12m

$79

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 5/20

6:14 am-12:32 pm

1 stop6h 18m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 15 results
1
2

Compare providers for flights from Seattle to San Francisco

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 Seattle to San Francisco in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy1 starTrust 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 Seattle-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-San Francisco flights, Cheapflights users trust eDreams the most. eDreams 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 Seattle-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Seattle to San Francisco 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 Seattle to San Francisco trip
Airlines
Avianca

Opt for Classic fares to earn LifeMiles and enjoy seat selection and checked baggage.


Avoid slow check-in lines by using the Avianca app for online check-in.

Read more about Aviancaby Matt Meltzer
Alaska Airlines

Alaska's Wi-Fi is a bargain, perfect for getting work done during flights.


Alaska's Premium Class offers extra legroom and free cocktails, ideal for comfort seekers.

Read more about Alaska Airlinesby Robert Schrader
United Airlines

United's Economy Plus offers extra legroom, ideal for a more comfortable journey.


Prepay for checked bags to save money on United flights.

Read more about United Airlinesby Harriet Baskas
Airports
SEA

Plan to arrive at SEA at least two hours before your flight. Use SEA Spot Saver for advance security screening appointments to reduce wait times.

Read more about SEAby Brandon Schultz
SFO

Use BART for a cost-effective trip from SFO to downtown San Francisco. The journey takes about 40 minutes from the airport.

Read more about SFOby Harriet Baskas
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on Avianca

Matt Meltzer

Matt Meltzer

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and 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 Seattle to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Seattle 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 Seattle to San Francisco

How far ahead should I book a flight from Seattle to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to San Francisco. Price data was last updated on April 18, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San Francisco, you should look to book at least 42 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 Seattle to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $276). Flying from Seattle to San Francisco in June is currently the most expensive (average of $393). 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 SEA to SFO?

Find hourly flight availability from Seattle to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 42% on flights from Seattle to San Francisco by exploring options for tickets at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to San Francisco. Price data was last updated on March 30, 2025.

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

Weekly flight availability from Seattle to San Francisco

Explore weekly flight availability from Seattle to San Francisco. 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 April 22, 2025.

The most flights from SEA to SFO are scheduled on a Tuesday (101 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 on average).

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated April 22, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
Alaska Airlines
8.0
Very good
9,911 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
Hawaiian Airlines
7.9
Good
2,392 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Phally,Oct 2024

IAD - SFO

Service was good. We pre-ordered a snack but never made it to us.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Francisco. 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 Seattle to San Francisco?

    San Francisco is the airport most travelers will use when flying to San Francisco from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to San Francisco (SFO) should be relatively easy as there are 50 daily flights to San Francisco from 8 different airlines. 2h 10m is how long a flight from Seattle to San Francisco will take if you book a nonstop flight.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 119 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Our cheapest airline available from Seattle to San Francisco is Delta. Our recent data shows that you can find tickets from as low as $149 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $150 and $151 round-trip. Delta is priced at 35% lower than the current average price of a flight leaving 3 months from now.

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

    $78 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $79 and $80, respectively.

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

    Consider China Eastern (100%), Aeromexico (100%) or China Southern (93%) when booking your flight. These represent the most reliable airlines when flying from Seattle to San Francisco.

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

    On average you can expect to pay $819 for a flight from Seattle to San Francisco. The cheapest flight overall is $78 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at $129.

  • Can I find deals for flights from Seattle to San Francisco that include hotel bookings?

    Yes. In addition to deals on Seattle to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to San Francisco.

  • Can I find deals for business class flights from Seattle to San Francisco?

    Yes. Cheapflights offers flight deals from Seattle to San Francisco 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 Seattle to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $276). Flying from Seattle to San Francisco in June is currently the most expensive (average of $393). 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
Roseville
Mountain View
Santa Cruz
Turlock
Livermore
South San Francisco
Fairfield
Manteca
Richmond
Watsonville
Hollister
Milpitas
Antioch
Sausalito
Vallejo
Newark
Hayward
Alameda
Sunnyvale
Campbell

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Top 7 airlines flying from Seattle to San Francisco

Discover the top 7 airlines that operate flights from Seattle to San Francisco. 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$202FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$109Average$125FlexibilityNo cancel feeOn-time65%
DeltaCheapest$113Average$209FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$122Average$245FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$132Average$250FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$137Average$247FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$226Average$392FlexibilityNo cancel feeOn-time71%

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