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Cheap flights from Seattle to San Francisco from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to San Francisco departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Delta Logo
7:25 am - 9:55 amSEA-SFO
2h 30mnonstop
Delta Logo
6:43 pm - 11:56 pmSFO-SEA
5h 13m1 stop
$127Delta
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Thu, Nov 6 - Mon, Nov 10
Delta Logo
9:46 am - 3:59 pmSEA-SFO
6h 13m1 stop
Delta Logo
6:00 am - 8:20 amSFO-SEA
2h 20mnonstop
$128Delta
Find Deal
Sat, Nov 1 - Mon, Nov 3
Alaska Airlines Logo
1:31 pm - 3:43 pmSEA-SFO
2h 12mnonstop
Alaska Airlines Logo
7:37 pm - 10:00 pmSFO-SEA
2h 23mnonstop
$130Alaska Airlines
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Thu, Oct 30 - Sat, Nov 1
Alaska Airlines Logo
8:00 am - 12:35 pmSEA-SFO
4h 35m1 stop
Alaska Airlines Logo
9:00 am - 11:24 amSFO-SEA
2h 24mnonstop
$131Alaska Airlines
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Wed, Oct 29 - Mon, Nov 3
Frontier Logo
12:58 pm - 10:27 pmSEA-SFO
9h 29m1 stop
Frontier Logo
9:55 pm - 9:18 amSFO-SEA
11h 23m1 stop
$144Frontier
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Tue, Oct 28 - Sat, Nov 1
Frontier Logo
1:37 pm - 10:27 pmSEA-SFO
8h 50m1 stop
Frontier Logo
8:55 pm - 8:18 amSFO-SEA
11h 23m1 stop
$150Frontier
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Tue, Nov 4 - Sun, Nov 9
Southwest Logo
5:00 pm - 11:05 pmSEA-SFO
6h 05m1 stop
Southwest Logo
5:10 am - 12:05 pmSFO-SEA
6h 55m1 stop
$154Southwest
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Wed, Oct 29 - Mon, Nov 3
Southwest Logo
12:35 pm - 9:25 pmSEA-SFO
8h 50m1 stop
Southwest Logo
7:30 am - 4:30 pmSFO-SEA
9h 00m2 stops
$156Southwest
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Sat, Nov 1 - Mon, Nov 3
United Airlines Logo
1:20 pm - 3:35 pmSEA-SFO
2h 15mnonstop
United Airlines Logo
9:30 pm - 11:44 pmSFO-SEA
2h 14mnonstop
$168United Airlines
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Fri, Nov 7 - Sun, Nov 9
United Airlines Logo
3:37 pm - 5:50 pmSEA-SFO
2h 13mnonstop
United Airlines Logo
9:30 pm - 11:44 pmSFO-SEA
2h 14mnonstop
$171United Airlines
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Fri, Nov 7 - Mon, Nov 10

Frontier flights from Seattle to San Francisco

Our best Frontier deals on Seattle to San Francisco flight tickets
Frontier
Oct 28
SEA12:58 pmSeattle/Tacoma Intl
9h 29m
1 stop
SFO10:27 pmSan Francisco
Nov 1
SFO9:55 pmSan Francisco
11h 23m
1 stop
SEA9:18 amSeattle/Tacoma Intl
$144
Find similar
Frontier
Nov 4
SEA1:37 pmSeattle/Tacoma Intl
8h 50m
1 stop
SFO10:27 pmSan Francisco
Nov 9
SFO8:55 pmSan Francisco
11h 23m
1 stop
SEA8:18 amSeattle/Tacoma Intl
$150
Find similar
Frontier
Nov 7
SEA2:22 pmSeattle/Tacoma Intl
9h 52m
1 stop
SFO12:14 amSan Francisco
Nov 9
SFO8:55 pmSan Francisco
11h 23m
1 stop
SEA8:18 amSeattle/Tacoma Intl
$158
Find similar

Southwest flights from Seattle to San Francisco

Our best Southwest deals on Seattle to San Francisco flight tickets
Southwest
Oct 29
SEA5:00 pmSeattle/Tacoma Intl
6h 05m
1 stop
SFO11:05 pmSan Francisco
Nov 3
SFO5:10 amSan Francisco
6h 55m
1 stop
SEA12:05 pmSeattle/Tacoma Intl
$154
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Southwest
Nov 1
SEA12:35 pmSeattle/Tacoma Intl
8h 50m
1 stop
SFO9:25 pmSan Francisco
Nov 3
SFO7:30 amSan Francisco
9h 00m
2 stops
SEA4:30 pmSeattle/Tacoma Intl
$156
Find similar
Southwest
Oct 29
SEA5:00 pmSeattle/Tacoma Intl
6h 05m
1 stop
SFO11:05 pmSan Francisco
Nov 3
SFO12:45 pmSan Francisco
7h 00m
2 stops
SEA7:45 pmSeattle/Tacoma Intl
$159
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momondo 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, momondo users made 832,500 searches. Data last updated October 6, 2025.
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

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 11/6

7:25 am-9:55 am

Nonstop2h 30m

San Francisco

Mon 11/10

6:43 pm-11:56 pm

1 stop5h 13m

$127

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 11/1

9:46 am-3:59 pm

1 stop6h 13m

San Francisco

Mon 11/3

6:00 am-8:20 am

Nonstop2h 20m

$128

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 10/30

1:31 pm-3:43 pm

Nonstop2h 12m

San Francisco

Sat 11/1

7:37 pm-10:00 pm

Nonstop2h 23m

$130

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 10/29

8:00 am-12:35 pm

1 stop4h 35m

San Francisco

Mon 11/3

9:00 am-11:24 am

Nonstop2h 24m

$131

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 10/28

12:58 pm-10:27 pm

1 stop9h 29m

San Francisco

Sat 11/1

9:55 pm-9:18 am

1 stop11h 23m

$144

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 11/4

1:37 pm-10:27 pm

1 stop8h 50m

San Francisco

Sun 11/9

8:55 pm-8:18 am

1 stop11h 23m

$150

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 10/29

5:00 pm-11:05 pm

1 stop6h 05m

San Francisco

Mon 11/3

5:10 am-12:05 pm

1 stop6h 55m

$154

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 11/1

12:35 pm-9:25 pm

1 stop8h 50m

San Francisco

Mon 11/3

7:30 am-4:30 pm

2 stops9h 00m

$156

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 11/7

1:20 pm-3:35 pm

Nonstop2h 15m

San Francisco

Sun 11/9

9:30 pm-11:44 pm

Nonstop2h 14m

$168

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 11/7

3:37 pm-5:50 pm

Nonstop2h 13m

San Francisco

Mon 11/10

9:30 pm-11:44 pm

Nonstop2h 14m

$171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Seattle to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $217.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Seattle to San Francisco is on a Friday when prices can be found for as low as $286. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $521.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Seattle to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $292. Flights in the evening are often more expensive with an average ticket price of $435.

What is the cheapest Seattle/Tacoma Intl to San Francisco flight route?

Fly from Seattle/Tacoma Intl to San Francisco for the best Seattle/Tacoma Intl - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $235 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Seattle for as low as $155 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to San Francisco flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to San Francisco flight prices changed over time?

As of October 2025, prices for Seattle to San Francisco flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to San Francisco (SEA to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to San Francisco

Best Price Found

$144

Fastest flight time

2h 07m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Seattle in the past 72 hours is $144. The best round-trip flight deal from Seattle to San Francisco found on momondo in the last 72 hours is $202.
The fastest flight from Seattle to San Francisco takes 2h 07m
Direct flights go from Seattle to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is Seattle/Tacoma Intl to San Francisco by plane?

    There are 678.2 mi between Seattle/Tacoma Intl and San Francisco. By plane, this route typically takes 2h 10m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to San Francisco Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to San Francisco Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to San Francisco Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to San Francisco?

  • What is the most popular airline from Seattle to San Francisco?

Best airlines flying from Seattle to San Francisco

Compare and see reviews for airlines that fly from Seattle to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $100Free CancellationRating
5.8
3,145 reviews
Search Frontier flights
DeltaPriceFrom $102Free CancellationRating
7.9
7,966 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $109Free CancellationRating
7.8
2,772 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $121Free CancellationRating
7.4
8,957 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $134Free CancellationRating
8.0
11,027 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Seattle to San Francisco

    Alaska Airlines is one of the most popular airlines flying from Seattle to San Francisco, operating 24 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to San Francisco starts from $134 round-trip, up to an average price of $249. Our users have rated Alaska Airlines at 8.0/10.

  • Delta Flights From Seattle to San Francisco

    The best Delta deal for Seattle to San Francisco flight tickets found on momondo in the last 72 hours was $102, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $204 round-trip. Delta operates 9 flights out of Seattle into San Francisco in an average week, so prices vary by time and availability. 7,966 Delta reviews by users on momondo have scored the airline at 7.9/10.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Calistoga
Hayward
Roseville
Big Sur
Santa Clara
Fremont
Daly City
Berkeley
Walnut Creek
Half Moon Bay
Vallejo
Salinas
Redwood City
Turlock
South San Francisco

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to San Francisco?

It is quick and easy to find Seattle to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

Can I find flights from Seattle to San Francisco with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Francisco from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to San Francisco?

momondo provides multiple filters to help you find the best flight to San Francisco from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to San Francisco right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Seattle and alert you when they change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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