San Francisco

$85+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
Aug 2 — Aug 91
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in September or January, booked 88 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 July 28, 2025.

Round-trip from

$143
(Kiwi.com)

One-way from

$85
(iWofly)

Popular in

July

Cheapest in

September

Average price

$274

Good round-trip deal

$230 or less

Good one-way deal

$173 or less
From Seattle/Tacoma Intl to San Francisco
One-way flight from Seattle/Tacoma Intl to San Francisco
Highest demand for flights based on searches. 5% potential increase in price ($12 potential increase over avg. RT price).
Cheapest flight prices on average. 1% 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 Seattle/Tacoma Intl to San Francisco.
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.

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 July 28, 2025.

This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:05 pmSEA - SFO
Nonstop2h 15mHawaiian Airlines
Thu 9/187:00 amSFO - SEA
Nonstop2h 10mHawaiian Airlines
Deal found 7/27$143
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 8/3011:30 amSEA - SFO
1 stop5h 27mAlaska Airlines
Sun 8/316:00 amSFO - SEA
1 stop5h 24mAlaska Airlines
Deal found 7/27$145
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/179:20 pmSEA - SFO
Nonstop2h 09mDelta
Sun 9/216:00 amSFO - SEA
Nonstop2h 16mDelta
Deal found 7/27$147
This Kissandfly.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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:03 amSEA - SFO
1 stop5h 07mMultiple Airlines
Sun 8/316:00 amSFO - SEA
1 stop5h 24mMultiple Airlines
Deal found 7/27$160
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/279:55 amSEA - SFO
2 stops9h 55mSouthwest
Wed 9/34:45 pmSFO - SEA
1 stop7h 20mSouthwest
Deal found 7/28$162
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/54:40 pmSEA - SFO
1 stop5h 11mFrontier
Sun 9/710:49 amSFO - SEA
1 stop6h 44mFrontier
Deal found 7/27$204

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 July 28, 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

Thu 9/11

6:05 pm-8:20 pm

Nonstop2h 15m

San Francisco

Thu 9/18

7:00 am-9:10 am

Nonstop2h 10m

$143

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

11:30 am-4:57 pm

1 stop5h 27m

San Francisco

Sun 8/31

6:00 am-11:24 am

1 stop5h 24m

$145

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 9/17

9:20 pm-11:29 pm

Nonstop2h 09m

San Francisco

Sun 9/21

6:00 am-8:16 am

Nonstop2h 16m

$147

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

8:03 am-1:10 pm

1 stop5h 07m

San Francisco

Sun 8/31

6:00 am-11:24 am

1 stop5h 24m

$160

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 8/27

9:55 am-7:50 pm

2 stops9h 55m

San Francisco

Wed 9/3

4:45 pm-12:05 am

1 stop7h 20m

$162

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 9/5

4:40 pm-9:51 pm

1 stop5h 11m

San Francisco

Sun 9/7

10:49 am-5:33 pm

1 stop6h 44m

$204

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 8/22

7:00 am-1:32 pm

1 stop6h 32m

$85

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sun 10/26

8:00 am-12:35 pm

1 stop4h 35m

$88

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 9/26

3:23 pm-9:18 pm

1 stop5h 55m

$89

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 9/29

10:40 am-7:15 pm

2 stops8h 35m

$94

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 13 results
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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.

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.

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.

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

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 July 25, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to San Francisco, you should look to book at least 57 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 $358). 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 July 28, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 41% 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 July 27, 2025.

Travelers seeking maximum savings on their Seattle to San Francisco flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons 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 July 28, 2025.

The most flights from SEA to SFO are scheduled on a Monday (125 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (82 on average).

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 July 28, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta 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.

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

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 100 daily flights to San Francisco from 6 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?

  • 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 $143 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $145 and $147 round-trip. Hawaiian Airlines is priced at 38% 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?

    $85 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Alaska Airlines and American Airlines, with prices starting from $88 and $89, respectively.

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

    Consider KLM (94%), China Southern (93%) or SWISS (92%) 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 $1,072 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 $117.

  • 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 $358). 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
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Newark
Milpitas
Sunnyvale
Campbell
Lathrop
Foster City
Capitola
Santa Clara
San Leandro
Burlingame

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$208FlexibilityNo cancel feeOn-time62%
DeltaCheapest$103Average$204FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$113Average$255FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$120Average$245FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$130Average$240FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$226Average$392FlexibilityNo cancel feeOn-time71%

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