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Cheap flights from Seattle to San Francisco from $108

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or May, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to San Francisco

Enter your travel dates to find the best prices.

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 23 March 2026.

Wed 6/507:10
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Wed 6/512:26
SFO
-
SEA
Nonstop2h 16m
Alaska Airlines
Deal found 19/3$188
Sat 18/411:35
SEA
-
SFO
Nonstop2h 15m
United Airlines
Sat 25/416:12
SFO
-
SEA
Nonstop2h 23m
United Airlines
Deal found 19/3$195
Thu 14/507:08
SEA
-
SFO
Nonstop2h 18m
United Airlines
Mon 18/522:35
SFO
-
SEA
Nonstop2h 37m
United Airlines
Deal found 19/3$206
Thu 23/417:59
SEA
-
SFO
1 stop5h 11m
Delta
Mon 27/405:59
SFO
-
SEA
Nonstop2h 20m
Delta
Deal found 18/3$209
Sat 9/511:15
SEA
-
SFO
1 stop7h 40m
Southwest
Sun 10/505:00
SFO
-
SEA
1 stop5h 00m
Southwest
Deal found 18/3$216
Wed 22/411:35
SEA
-
SFO
2 stops8h 20m
Southwest
Wed 29/410:30
SFO
-
SEA
1 stop7h 15m
Southwest
Deal found 18/3$231
Tue 2/621:45
SEA
-
SFO
Nonstop2h 18m
Delta
Thu 4/605:55
SFO
-
SEA
Nonstop2h 20m
Delta
Deal found 20/3$238
Fri 8/518:15
SEA
-
SFO
1 stop5h 55m
Southwest
Tue 12/507:20
SFO
-
SEA
2 stops13h 40m
Southwest
Deal found 18/3$239
Thu 16/418:15
SEA
-
SFO
1 stop5h 55m
Southwest
Tue 21/411:25
SFO
-
SEA
2 stops11h 30m
Southwest
Deal found 18/3$245

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 23 March 2026.

Round-trip from

$188

One-way from

$108

Popular in

March

Cheapest in

January

Average price

$409

Good one-way deal

$311 or less
Alaska Airlines
  • Alaska Airlines
  • 6/5-6/5
  • Nonstop
  • 4h 33m total
  • Seattle to San Francisco
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United Airlines
  • United Airlines
  • 20/4
  • Nonstop
  • 2h 19m total
  • Seattle to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
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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 23 March 2026.
Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 25/4

21:20-23:35

Nonstop2h 15m

San Francisco

Sun 26/4

05:55-08:13

Nonstop2h 18m

$195

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 14/5

07:08-09:26

Nonstop2h 18m

San Francisco

Mon 18/5

22:35-01:12

Nonstop2h 37m

$206

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 1/5

16:36-23:59

1 stop7h 23m

San Francisco

Sun 3/5

05:55-08:13

Nonstop2h 18m

$209

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 2/5

13:20-21:20

1 stop8h 00m

San Francisco

Sat 9/5

13:50-22:00

1 stop8h 10m

$224

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 5/5

07:10-09:27

Nonstop2h 17m

San Francisco

Wed 6/5

19:59-22:18

Nonstop2h 19m

$224

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 25/4

11:15-18:55

1 stop7h 40m

San Francisco

Wed 29/4

14:50-23:35

1 stop8h 45m

$224

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 4/5

21:20-23:37

Nonstop2h 17m

San Francisco

Mon 11/5

05:55-08:17

Nonstop2h 22m

$252

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 21/4

11:35-22:05

2 stops10h 30m

San Francisco

Tue 28/4

10:05-18:00

1 stop7h 55m

$273

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 6/5

12:10-18:30

1 stop6h 20m

San Francisco

Wed 13/5

07:40-18:00

1 stop10h 20m

$273

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 4/5

18:15-00:10

1 stop5h 55m

San Francisco

Mon 11/5

17:40-00:55

1 stop7h 15m

$281

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 22 resultsSorted by cheapest first
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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 13 March 2026.

Booking 58 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, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $117). Flying from Seattle to San Francisco in June is currently the most expensive (average of $187). 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 23 March 2026.

One of the essential ways to save on airfare from Seattle to San Francisco is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 69% on airfare.

How much does it cost for a return flight from Seattle to San Francisco?

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 36 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?

    For as low as $195, Delta can have you in San Francisco from Seattle in 2h 15m. Airlines will cover a distance of 1093 km. This flight may include one or multiple stops.

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

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $83 and $93 on Alaska Airlines and Delta, respectively.

  • 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 Southwest (100%), SWISS (90%) and Aeromexico (90%).

  • 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 $311, our data indicates the cheapest price to be $233. The most popular route (Seattle/Tacoma Intl - San Francisco), is priced around $273.

  • 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, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of $117). Flying from Seattle to San Francisco in June is currently the most expensive (average of $187). 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
Davis
Milpitas
Vallejo

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Fly with Cheapflights

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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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