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Cheap flights from Seattle to San Francisco from $75

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 9/29. 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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Find the cheapest flights from Seattle to San Francisco

Cheap round-trip flights

Delta Logo
7:20 am - 9:48 amSEA-SFO
2h 28mnonstop
Delta Logo
1:45 pm - 4:06 pmSFO-SEA
2h 21mnonstop
$137Delta
Find Deal
Sat, Sep 13 - Wed, Sep 24
Hawaiian Airlines Logo
7:05 pm - 9:20 pmSEA-SFO
2h 15mnonstop
Hawaiian Airlines Logo
6:00 am - 8:07 amSFO-SEA
2h 07mnonstop
$138Hawaiian Airlines
Find Deal
Sat, Sep 13 - Sun, Sep 14
Logo
8:08 pm - 10:23 pmSEA-SFO
2h 15mnonstop
Logo
6:00 am - 8:07 amSFO-SEA
2h 07mnonstop
$140
Find Deal
Sat, Sep 13 - Sun, Sep 14
Alaska Airlines Logo
11:25 am - 1:44 pmSEA-SFO
2h 19mnonstop
Alaska Airlines Logo
5:14 pm - 9:24 pmSFO-SEA
4h 10m1 stop
$141Alaska Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 10
Logo
8:08 pm - 10:23 pmSEA-SFO
2h 15mnonstop
Logo
6:00 am - 8:07 amSFO-SEA
2h 07mnonstop
$142
Find Deal
Sat, Sep 13 - Sun, Sep 14
Alaska Airlines Logo
11:20 am - 4:03 pmSEA-SFO
4h 43m1 stop
Alaska Airlines Logo
8:20 am - 10:34 amSFO-SEA
2h 14mnonstop
$146Alaska Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
United Airlines Logo
5:35 pm - 7:47 pmSEA-SFO
2h 12mnonstop
United Airlines Logo
6:00 am - 8:19 amSFO-SEA
2h 19mnonstop
$147United Airlines
Find Deal
Sat, Sep 13 - Sun, Sep 14
Frontier Logo
7:17 pm - 12:09 amSEA-SFO
4h 52m1 stop
Frontier Logo
8:55 pm - 8:18 amSFO-SEA
11h 23m1 stop
$150Frontier
Find Deal
Mon, Nov 3 - Fri, Nov 7
Frontier Logo
2:31 pm - 12:14 amSEA-SFO
9h 43m1 stop
Frontier Logo
8:21 pm - 7:33 amSFO-SEA
11h 12m1 stop
$153Frontier
Find Deal
Fri, Oct 10 - Sun, Oct 12
United Airlines Logo
7:00 am - 9:19 amSEA-SFO
2h 19mnonstop
United Airlines Logo
8:45 pm - 10:59 pmSFO-SEA
2h 14mnonstop
$178United Airlines
Find Deal
Fri, Sep 19 - Sun, Sep 21

Hawaiian Airlines flights from Seattle to San Francisco

Our best Hawaiian Airlines deals on Seattle to San Francisco flight tickets
Hawaiian Airlines
Sep 13
SEA7:05 pmSeattle/Tacoma Intl
2h 15m
SFO9:20 pmSan Francisco
Sep 14
SFO6:00 amSan Francisco
2h 07m
SEA8:07 amSeattle/Tacoma Intl
$138
Find similar
Hawaiian Airlines
Sep 13
SEA11:30 amSeattle/Tacoma Intl
5h 27m
1 stop
SFO4:57 pmSan Francisco
Sep 14
SFO6:00 amSan Francisco
2h 07m
SEA8:07 amSeattle/Tacoma Intl
$143
Find similar
Hawaiian Airlines
Sep 13
SEA11:30 amSeattle/Tacoma Intl
5h 27m
1 stop
SFO4:57 pmSan Francisco
Sep 14
SFO6:00 amSan Francisco
2h 07m
SEA8:07 amSeattle/Tacoma Intl
$144
Find similar

Frontier flights from Seattle to San Francisco

Our best Frontier deals on Seattle to San Francisco flight tickets
Frontier
Nov 3
SEA7:17 pmSeattle/Tacoma Intl
4h 52m
1 stop
SFO12:09 amSan Francisco
Nov 7
SFO8:55 pmSan Francisco
11h 23m
1 stop
SEA8:18 amSeattle/Tacoma Intl
$150
Find similar
Frontier
Oct 10
SEA2:31 pmSeattle/Tacoma Intl
9h 43m
1 stop
SFO12:14 amSan Francisco
Oct 12
SFO8:21 pmSan Francisco
11h 12m
1 stop
SEA7:33 amSeattle/Tacoma Intl
$153
Find similar
Frontier
Sep 15
SEA12:30 pmSeattle/Tacoma Intl
10h 45m
1 stop
SFO11:15 pmSan Francisco
Sep 22
SFO5:45 amSan Francisco
9h 56m
1 stop
SEA3:41 pmSeattle/Tacoma Intl
$154
Find similar

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 August 21, 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

Sat 9/13

7:20 am-9:48 am

Nonstop2h 28m

San Francisco

Wed 9/24

1:45 pm-4:06 pm

Nonstop2h 21m

$137

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 9/13

7:05 pm-9:20 pm

Nonstop2h 15m

San Francisco

Sun 9/14

6:00 am-8:07 am

Nonstop2h 07m

$138

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 9/13

8:08 pm-10:23 pm

Nonstop2h 15m

San Francisco

Sun 9/14

6:00 am-8:07 am

Nonstop2h 07m

$140

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 9/10

11:25 am-1:44 pm

Nonstop2h 19m

San Francisco

Wed 9/10

5:14 pm-9:24 pm

1 stop4h 10m

$141

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 9/13

8:08 pm-10:23 pm

Nonstop2h 15m

San Francisco

Sun 9/14

6:00 am-8:07 am

Nonstop2h 07m

$142

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 10/7

11:20 am-4:03 pm

1 stop4h 43m

San Francisco

Wed 10/15

8:20 am-10:34 am

Nonstop2h 14m

$146

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 9/13

5:35 pm-7:47 pm

Nonstop2h 12m

San Francisco

Sun 9/14

6:00 am-8:19 am

Nonstop2h 19m

$147

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 11/3

7:17 pm-12:09 am

1 stop4h 52m

San Francisco

Fri 11/7

8:55 pm-8:18 am

1 stop11h 23m

$150

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 10/10

2:31 pm-12:14 am

1 stop9h 43m

San Francisco

Sun 10/12

8:21 pm-7:33 am

1 stop11h 12m

$153

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 9/19

7:00 am-9:19 am

Nonstop2h 19m

San Francisco

Sun 9/21

8:45 pm-10:59 pm

Nonstop2h 14m

$178

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 September is also cheap. Prices for this month can be found on momondo for an average of $206.

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 $295. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $541.

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 $291. Flights in the afternoon are often more expensive with an average ticket price of $478.

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 $231 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 $147 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 August 2025, prices for Seattle to San Francisco flights are approximately 4% 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

$173

Fastest flight time

2h 08m

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 $173. The best round-trip flight deal from Seattle to San Francisco found on momondo in the last 72 hours is $217.
The fastest flight from Seattle to San Francisco takes 2h 08m
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 09m.

  • 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
3,207 reviews
Search Frontier flights
DeltaPriceFrom $103Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $113Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $119Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $128Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
10,000 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 19 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to San Francisco starts from $128 round-trip, up to an average price of $242. 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 $103, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $202 round-trip. Delta operates 12 flights out of Seattle into San Francisco in an average week, so prices vary by time and availability. 7,981 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
Calistoga
Sonoma
Hayward
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Fremont
Berkeley
Walnut Creek
Half Moon Bay
Vallejo
South San Francisco
Redwood City
Pacific Grove
Sunnyvale

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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