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Cheap flights from Seattle to San Francisco from $48

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 10/7. 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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Cheap round-trip flights

Hawaiian Airlines Logo
8:08 pm - 10:23 pmSEA-SFO
2h 15mnonstop
Hawaiian Airlines Logo
6:00 am - 8:07 amSFO-SEA
2h 07mnonstop
$94Hawaiian Airlines
Find Deal
Sat, Aug 30 - Mon, Sep 1
United Airlines Logo
7:34 pm - 9:48 pmSEA-SFO
2h 14mnonstop
United Airlines Logo
8:45 pm - 10:59 pmSFO-SEA
2h 14mnonstop
$95United Airlines
Find Deal
Wed, Aug 27 - Sat, Sep 6
Alaska Airlines Logo
9:40 pm - 12:04 amSEA-SFO
2h 24mnonstop
Alaska Airlines Logo
9:19 pm - 11:42 pmSFO-SEA
2h 23mnonstop
$102Alaska Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 16
Delta Logo
5:35 pm - 7:47 pmSEA-SFO
2h 12mnonstop
Delta Logo
5:55 am - 8:05 amSFO-SEA
2h 10mnonstop
$103Delta
Find Deal
Sat, Aug 30 - Mon, Sep 1
Southwest Logo
1:40 pm - 9:25 pmSEA-SFO
7h 45m1 stop
Southwest Logo
5:25 pm - 10:50 pmSFO-SEA
5h 25m1 stop
$114Southwest
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Wed, Sep 17 - Tue, Sep 23
Alaska Airlines Logo
6:59 pm - 9:12 pmSEA-SFO
2h 13mnonstop
Alaska Airlines Logo
8:20 am - 10:34 amSFO-SEA
2h 14mnonstop
$117Alaska Airlines
Find Deal
Sat, Oct 11 - Tue, Oct 14
Southwest Logo
4:10 pm - 9:25 pmSEA-SFO
5h 15m1 stop
Southwest Logo
7:00 am - 2:10 pmSFO-SEA
7h 10m2 stops
$120Southwest
Find Deal
Wed, Sep 3 - Wed, Sep 10
Delta Logo
7:28 am - 9:51 amSEA-SFO
2h 23mnonstop
Delta Logo
10:31 am - 12:46 pmSFO-SEA
2h 15mnonstop
$137Delta
Find Deal
Sat, Aug 30 - Wed, Sep 3
Logo
8:08 pm - 10:23 pmSEA-SFO
2h 15mnonstop
Logo
7:00 am - 9:10 amSFO-SEA
2h 10mnonstop
$142
Find Deal
Sat, Aug 30 - Mon, Sep 1
Logo
8:08 pm - 10:23 pmSEA-SFO
2h 15mnonstop
Logo
11:48 am - 6:58 pmSFO-SEA
7h 10m1 stop
$144
Find Deal
Sat, Aug 30 - Sun, Aug 31

United Airlines flights from Seattle to San Francisco

Our best United Airlines deals on Seattle to San Francisco flight tickets
United Airlines
Aug 27
SEA7:34 pmSeattle/Tacoma Intl
2h 14m
SFO9:48 pmSan Francisco
Sep 6
SFO8:45 pmSan Francisco
2h 14m
SEA10:59 pmSeattle/Tacoma Intl
$95
Find similar
United Airlines
Sep 4
SEA5:35 pmSeattle/Tacoma Intl
2h 12m
SFO7:47 pmSan Francisco
Sep 6
SFO4:35 pmSan Francisco
2h 14m
SEA6:49 pmSeattle/Tacoma Intl
$101
Find similar
United Airlines
Aug 27
SEA1:05 pmSeattle/Tacoma Intl
2h 15m
SFO3:20 pmSan Francisco
Aug 28
SFO8:45 pmSan Francisco
2h 14m
SEA10:59 pmSeattle/Tacoma Intl
$124
Find similar

Southwest flights from Seattle to San Francisco

Our best Southwest deals on Seattle to San Francisco flight tickets
Southwest
Sep 17
SEA1:40 pmSeattle/Tacoma Intl
7h 45m
1 stop
SFO9:25 pmSan Francisco
Sep 23
SFO5:25 pmSan Francisco
5h 25m
1 stop
SEA10:50 pmSeattle/Tacoma Intl
$114
Find similar
Southwest
Sep 3
SEA4:10 pmSeattle/Tacoma Intl
5h 15m
1 stop
SFO9:25 pmSan Francisco
Sep 10
SFO7:00 amSan Francisco
7h 10m
2 stops
SEA2:10 pmSeattle/Tacoma Intl
$120
Find similar
Southwest
Sep 16
SEA10:10 amSeattle/Tacoma Intl
9h 40m
2 stops
SFO7:50 pmSan Francisco
Sep 23
SFO7:00 amSan Francisco
7h 10m
2 stops
SEA2:10 pmSeattle/Tacoma Intl
$125
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 5, 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 8/30

8:08 pm-10:23 pm

Nonstop2h 15m

San Francisco

Mon 9/1

6:00 am-8:07 am

Nonstop2h 07m

$94

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 8/27

7:34 pm-9:48 pm

Nonstop2h 14m

San Francisco

Sat 9/6

8:45 pm-10:59 pm

Nonstop2h 14m

$95

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 9/15

9:40 pm-12:04 am

Nonstop2h 24m

San Francisco

Tue 9/16

9:19 pm-11:42 pm

Nonstop2h 23m

$102

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

5:35 pm-7:47 pm

Nonstop2h 12m

San Francisco

Mon 9/1

5:55 am-8:05 am

Nonstop2h 10m

$103

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 9/17

1:40 pm-9:25 pm

1 stop7h 45m

San Francisco

Tue 9/23

5:25 pm-10:50 pm

1 stop5h 25m

$114

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 10/11

6:59 pm-9:12 pm

Nonstop2h 13m

San Francisco

Tue 10/14

8:20 am-10:34 am

Nonstop2h 14m

$117

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 9/3

4:10 pm-9:25 pm

1 stop5h 15m

San Francisco

Wed 9/10

7:00 am-2:10 pm

2 stops7h 10m

$120

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

7:28 am-9:51 am

Nonstop2h 23m

San Francisco

Wed 9/3

10:31 am-12:46 pm

Nonstop2h 15m

$137

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

8:08 pm-10:23 pm

Nonstop2h 15m

San Francisco

Mon 9/1

7:00 am-9:10 am

Nonstop2h 10m

$142

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 8/30

8:08 pm-10:23 pm

Nonstop2h 15m

San Francisco

Sun 8/31

11:48 am-6:58 pm

1 stop7h 10m

$144

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 September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $205.

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 $298. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $546.

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 afternoon are often more expensive with an average ticket price of $488.

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 $232 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 $162 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 3% 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

$48

Fastest flight time

2h 10m

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 $48. The best round-trip flight deal from Seattle to San Francisco found on momondo in the last 72 hours is $94.
The fastest flight from Seattle to San Francisco takes 2h 10m
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 12m.

  • 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
3,232 reviews
Search Frontier flights
DeltaPriceFrom $104Free CancellationRating
8.0
7,987 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $113Free CancellationRating
7.8
2,623 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $120Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $130Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Delta Flights From Seattle to San Francisco

    Delta is one of the most popular airlines flying from Seattle to San Francisco, operating 9 flights/week on average for this route. A good Delta flight deal for Seattle to San Francisco starts from $104 round-trip, up to an average price of $204. Our users have rated Delta at 8.0/10.

  • Alaska Airlines Flights From Seattle to San Francisco

    The best Alaska Airlines deal for Seattle to San Francisco flight tickets found on momondo in the last 72 hours was $130, round-trip. It should be noted that an average Alaska Airlines flight deal for this route in this time was higher, at $240 round-trip. Alaska Airlines operates 25 flights out of Seattle into San Francisco in an average week, so prices vary by time and availability. 10,000 Alaska Airlines reviews by users on momondo have scored the airline at 8.0/10.

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
Hayward
Sonoma
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Berkeley
Fremont
Walnut Creek
Half Moon Bay
South San Francisco
Vallejo
Redwood City
Sunnyvale
Pacific Grove

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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