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Cheap flights from Seattle to San Francisco from $117

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
20 Aug — 27 Aug1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or September, booked 57 days in advance, depart on a Saturday or Tuesday and return on a Monday

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 15 August 2025.

Round-trip from

$210

One-way from

$117

Popular in

December

Cheapest in

January

Average price

$363

Good round-trip deal

$1,921 or less

Good one-way deal

$319 or less
Delta
  • Delta
  • 13/9-20/9
  • Nonstop
  • 4h 36m total
  • Seattle to San Francisco
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Southwest
  • Southwest
  • 9/9
  • 2 total stops
  • 9h 55m total
  • Seattle to San Francisco
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Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average return price).
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Average for round-trip flights in August 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 15 August 2025.

Sat 13/917:45SEA - SFO
Nonstop2h 20mDelta
Sat 20/905:55SFO - SEA
Nonstop2h 16mDelta
Deal found 14/8$210
Thu 4/913:05SEA - SFO
Nonstop2h 15mUnited Airlines
Sat 6/916:35SFO - SEA
Nonstop2h 14mUnited Airlines
Deal found 14/8$212
Thu 4/920:08SEA - SFO
Nonstop2h 15mAlaska Airlines
Mon 8/906:00SFO - SEA
Nonstop2h 07mAlaska Airlines
Deal found 14/8$213
Tue 9/916:10SEA - SFO
1 stop5h 15mSouthwest
Tue 16/916:45SFO - SEA
1 stop7h 20mSouthwest
Deal found 15/8$216
Sat 11/1017:31SEA - SFO
Nonstop2h 13mUnited Airlines
Sun 12/1021:00SFO - SEA
Nonstop2h 15mUnited Airlines
Deal found 13/8$225
Thu 4/921:40SEA - SFO
Nonstop2h 24mAlaska Airlines
Tue 9/911:44SFO - SEA
1 stop3h 51mAlaska Airlines
Deal found 14/8$227
Wed 24/1207:20SEA - SFO
Nonstop2h 21mDelta
Sun 4/106:05SFO - SEA
Nonstop2h 18mDelta
Deal found 14/8$228
Wed 3/913:40SEA - SFO
1 stop7h 45mSouthwest
Thu 4/905:00SFO - SEA
1 stop5h 25mSouthwest
Deal found 13/8$230
Wed 17/910:10SEA - SFO
2 stops9h 40mSouthwest
Sat 20/906:50SFO - SEA
1 stop8h 55mSouthwest
Deal found 14/8$236
Wed 3/910:10SEA - SFO
2 stops9h 40mSouthwest
Thu 11/917:15SFO - SEA
1 stop7h 00mSouthwest
Deal found 13/8$238

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 15 August 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 13/9

07:00-09:19

Nonstop2h 19m

San Francisco

Sat 13/9

16:35-18:49

Nonstop2h 14m

$210

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/11

07:25-09:55

Nonstop2h 30m

San Francisco

Sat 8/11

16:45-19:00

Nonstop2h 15m

$210

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 6/9

07:28-09:51

Nonstop2h 23m

San Francisco

Sat 13/9

05:55-08:11

Nonstop2h 16m

$210

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 7/10

07:10-09:24

Nonstop2h 14m

San Francisco

Tue 14/10

10:30-12:52

Nonstop2h 22m

$210

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 13/9

17:45-20:05

Nonstop2h 20m

San Francisco

Sat 20/9

05:55-08:11

Nonstop2h 16m

$210

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 25/9

07:00-09:20

Nonstop2h 20m

San Francisco

Sat 27/9

21:00-23:15

Nonstop2h 15m

$212

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/11

07:25-09:55

Nonstop2h 30m

San Francisco

Thu 13/11

06:05-08:25

Nonstop2h 20m

$212

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 22/11

13:40-16:00

Nonstop2h 20m

San Francisco

Thu 27/11

06:05-08:25

Nonstop2h 20m

$212

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 13/9

21:20-23:29

Nonstop2h 09m

San Francisco

Mon 15/9

20:58-23:15

Nonstop2h 17m

$212

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 6/12

17:10-19:25

Nonstop2h 15m

San Francisco

Thu 11/12

06:05-08:25

Nonstop2h 20m

$212

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 21 results
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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 return 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 return flight from Seattle to San Francisco. Price data was last updated on 8 August 2025.

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to San Francisco?

Currently, March is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $876). Flying from Seattle to San Francisco in December is currently the most expensive (average of $1,375). 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 15 August 2025.

One of the essential ways to save on airfare from Seattle to San Francisco is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 87% on airfare.

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 15 August 2025.

The most flights from SEA to SFO are scheduled on a Friday (115 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 on average).

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.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 40 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    The top 3 most reliable airlines when flying from Seattle to San Francisco are China Southern (97%), SWISS (92%) and China Eastern (92%).

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

    Looking for the cheapest flight from Seattle to San Francisco? While on average our users pay $1,220, our data indicates the cheapest price to be $200. The most popular route (Seattle/Tacoma Intl - San Francisco), is priced around $236.

  • 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 holiday 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, March is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $876). Flying from Seattle to San Francisco in December is currently the most expensive (average of $1,375). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Sausalito
Santa Cruz
Los Gatos
Mountain View
Davis
Emeryville
Stanford
Milpitas
Daly City

Browse thousands of different options on Cheapflights for your next trip

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How does Cheapflights help users find flights from Seattle to San Francisco?

When you search for this flight from Seattle to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to San Francisco become cheaper?

Not ready to book yet? You can track prices for flights from Seattle to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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