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$62+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Seattle to San Francisco 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 Seattle/Tacoma Intl to San Francisco are usually found in January or February, booked 58 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap 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 December 23, 2025.

This Frontier deal was found by Cheapflights users on 12/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:54 pmSEA - SFO
1 stop9h 30mFrontier
Thu 1/88:48 amSFO - SEA
1 stop8h 49mFrontier
Deal found 12/21$282
This Trip.com deal was found by Cheapflights users on 12/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:25 pmSEA - SFO
1 stop18h 58mFrontier
Wed 1/74:01 pmSFO - SEA
1 stop17h 03mFrontier
Deal found 12/21$298
This Frontier deal was found by Cheapflights users on 12/20. 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.
Fri 12/262:54 pmSEA - SFO
1 stop9h 30mFrontier
Fri 1/910:08 pmSFO - SEA
1 stop10h 56mFrontier
Deal found 12/20$317
This Trip.com deal was found by Cheapflights users on 12/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2811:06 amSEA - SFO
1 stop12h 46mFrontier
Sun 1/410:31 pmSFO - SEA
1 stop19h 07mFrontier
Deal found 12/21$340
This Frontier deal was found by Cheapflights users on 12/20. 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.
Thu 12/251:25 pmSEA - SFO
1 stop10h 59mFrontier
Thu 1/88:48 amSFO - SEA
1 stop8h 49mFrontier
Deal found 12/20$342
This Delta deal was found by Cheapflights users on 12/22. 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.
Tue 12/233:30 pmSEA - SFO
Nonstop2h 20mDelta
Wed 1/142:39 pmSFO - SEA
Nonstop2h 19mDelta
Deal found 12/22$357
This Trip.com deal was found by Cheapflights users on 12/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/231:25 pmSEA - SFO
1 stop25h 46mFrontier
Sun 1/410:31 pmSFO - SEA
1 stop19h 07mFrontier
Deal found 12/22$362
This Super.com deal was found by Cheapflights users on 12/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:54 pmSEA - SFO
1 stop9h 30mFrontier
Sun 12/2810:31 pmSFO - SEA
1 stop19h 07mFrontier
Deal found 12/21$372
This Orbitz deal was found by Cheapflights users on 12/20. 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.
Tue 12/231:25 pmSEA - SFO
1 stop25h 46mMultiple Airlines
Tue 1/67:00 amSFO - SEA
Nonstop2h 17mMultiple Airlines
Deal found 12/20$385
This Super.com deal was found by Cheapflights users on 12/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/262:54 pmSEA - SFO
1 stop9h 30mFrontier
Sun 12/2810:31 pmSFO - SEA
1 stop19h 07mFrontier
Deal found 12/22$393

Find 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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$116
(Kiwi.com)

One-way from

$62
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$290

Good round-trip deal

$159 or less

Good one-way deal

$162 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San Francisco flights.
Search Deals
From Seattle/Tacoma Intl to San Francisco
Search Deals
One-way flight from Seattle/Tacoma Intl to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
Search Deals

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 December 23, 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

Wed 2/18

11:17 am-5:56 pm

1 stop6h 39m

San Francisco

Mon 2/23

5:05 pm-12:09 am

1 stop7h 04m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 2/28

11:17 am-5:56 pm

1 stop6h 39m

San Francisco

Tue 3/3

9:55 am-2:44 pm

1 stop4h 49m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 3/13

5:55 pm-11:16 pm

1 stop5h 21m

San Francisco

Mon 3/16

5:00 pm-12:03 am

1 stop7h 03m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 1/21

9:55 am-5:47 pm

1 stop7h 52m

San Francisco

Wed 1/28

1:35 pm-6:42 pm

1 stop5h 07m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 1/10

9:20 pm-11:28 pm

Nonstop2h 08m

San Francisco

Tue 1/13

9:50 am-4:38 pm

1 stop6h 48m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 1/24

5:00 am-12:23 pm

1 stop7h 23m

San Francisco

Tue 1/27

5:55 am-12:57 pm

1 stop7h 02m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 2/2

9:55 am-5:47 pm

1 stop7h 52m

San Francisco

Thu 2/5

4:03 pm-11:22 pm

1 stop7h 19m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 2/27

7:00 pm-11:54 pm

1 stop4h 54m

San Francisco

Sat 2/28

1:15 pm-8:30 pm

1 stop7h 15m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 1/10

12:40 pm-8:35 pm

1 stop7h 55m

San Francisco

Tue 1/13

2:35 pm-11:05 pm

1 stop8h 30m

$151

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 1/15

8:35 am-2:50 pm

1 stop6h 15m

San Francisco

Tue 1/20

5:30 am-12:20 pm

1 stop6h 50m

$151

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 22 results
1
2
3

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-San Francisco flight deals on Cheapflights vs. eDreams >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.

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 December 19, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San Francisco, you should look to book at least 58 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 $87). Flying from Seattle to San Francisco 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 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 December 23, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 28% 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 December 20, 2025.

Travelers seeking maximum savings on their Seattle to San Francisco flight should consider departing on Friday evenings 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 Seattle to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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 to navigate potentially long security lines efficiently.

Read more about SEABy Brandon Schultz
SFO

Use BART for an affordable and efficient 40-minute ride from SFO to downtown San Francisco.

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

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 December 23, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
11,518 reviews
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
7.9
Good
8,015 reviews
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
9,107 reviews
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.8
Fair
3,074 reviews
Alaska Airlines
8.0
Very good
11,518 reviews

Entertainment

7.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 66 daily flights to San Francisco from 6 different airlines. 2h 08m 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 118 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Departing from Seattle to San Francisco will take you 6h 39m. The distance between Seattle and San Francisco is about 679 mi.

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

    Our cheapest airline available from Seattle to San Francisco is Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $81 on this airline. Additional options worth looking into are Frontier and Delta, starting at $83 and $92 round-trip. Hawaiian Airlines is priced at 65% 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?

    $65 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $68 and $69, respectively.

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

    Consider Air New Zealand (81%), Qantas Airways (81%) or Fiji Airways (81%) 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 $797 for a flight from Seattle to San Francisco. The cheapest flight overall is $58 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at $87.

  • 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 $87). Flying from Seattle to San Francisco 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Redwood City
Sunnyvale
Santa Clara
San Bruno
Daly City
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

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Top 6 airlines flying from Seattle to San Francisco

Discover the top 6 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$202FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$100Average$209FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$109Average$256FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$118Average$240FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$125Average$247FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$227Average$386FlexibilityNo cancel feeOn-time71%

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