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Cheap flights from San Francisco to Seattle from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Seattle departing on 10/23. 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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Hawaiian Airlines Logo
9:34 am - 11:46 amSFO-SEA
2h 12mnonstop
Hawaiian Airlines Logo
7:00 am - 9:16 amSEA-SFO
2h 16mnonstop
$135Hawaiian Airlines
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Tue, Oct 21 - Fri, Oct 24
Hawaiian Airlines Logo
6:20 pm - 8:35 pmSFO-SEA
2h 15mnonstop
Hawaiian Airlines Logo
9:32 pm - 11:50 pmSEA-SFO
2h 18mnonstop
$136Hawaiian Airlines
Find Deal
Sat, Oct 25 - Mon, Oct 27
Delta Logo
6:00 am - 8:20 amSFO-SEA
2h 20mnonstop
Delta Logo
10:25 am - 12:43 pmSEA-SFO
2h 18mnonstop
$137Delta
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Tue, Oct 21 - Tue, Oct 28
Alaska Airlines Logo
5:16 pm - 7:31 pmSFO-SEA
2h 15mnonstop
Alaska Airlines Logo
12:00 pm - 4:27 pmSEA-SFO
4h 27m1 stop
$138Alaska Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
Hawaiian Airlines Logo
2:40 pm - 4:58 pmSFO-SEA
2h 18mnonstop
Hawaiian Airlines Logo
8:00 am - 10:22 amSEA-SFO
2h 22mnonstop
$139Hawaiian Airlines
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Tue, Oct 21 - Thu, Oct 23
Alaska Airlines Logo
6:20 pm - 8:35 pmSFO-SEA
2h 15mnonstop
Alaska Airlines Logo
9:32 pm - 11:50 pmSEA-SFO
2h 18mnonstop
$140Alaska Airlines
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Sat, Oct 25 - Mon, Oct 27
Frontier Logo
9:55 pm - 9:18 amSFO-SEA
11h 23m1 stop
Frontier Logo
7:17 pm - 12:11 amSEA-SFO
4h 54m1 stop
$144Frontier
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Wed, Oct 29 - Mon, Nov 3
Delta Logo
1:45 pm - 4:10 pmSFO-SEA
2h 25mnonstop
Delta Logo
9:25 pm - 11:32 pmSEA-SFO
2h 07mnonstop
$147Delta
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Tue, Oct 21 - Thu, Oct 30
Frontier Logo
8:21 pm - 12:07 pmSFO-SEA
15h 46m1 stop
Frontier Logo
4:11 pm - 5:05 pmSEA-SFO
24h 54m1 stop
$164Frontier
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Fri, Oct 24 - Sun, Oct 26
United Airlines Logo
4:30 pm - 6:45 pmSFO-SEA
2h 15mnonstop
United Airlines Logo
7:00 am - 9:13 amSEA-SFO
2h 13mnonstop
$168United Airlines
Find Deal
Sat, Oct 25 - Sun, Oct 26

Hawaiian Airlines flights from San Francisco to Seattle

Our best Hawaiian Airlines deals on San Francisco to Seattle flight tickets
Hawaiian Airlines
Oct 21
SFO9:34 amSan Francisco
2h 12m
SEA11:46 amSeattle/Tacoma Intl
Oct 24
SEA7:00 amSeattle/Tacoma Intl
2h 16m
SFO9:16 amSan Francisco
$135
Find similar
Hawaiian Airlines
Oct 25
SFO6:20 pmSan Francisco
2h 15m
SEA8:35 pmSeattle/Tacoma Intl
Oct 27
SEA9:32 pmSeattle/Tacoma Intl
2h 18m
SFO11:50 pmSan Francisco
$136
Find similar
Hawaiian Airlines
Oct 21
SFO2:40 pmSan Francisco
2h 18m
SEA4:58 pmSeattle/Tacoma Intl
Oct 23
SEA8:00 amSeattle/Tacoma Intl
2h 22m
SFO10:22 amSan Francisco
$139
Find similar

Delta flights from San Francisco to Seattle

Our best Delta deals on San Francisco to Seattle flight tickets
Delta
Oct 21
SFO6:00 amSan Francisco
2h 20m
SEA8:20 amSeattle/Tacoma Intl
Oct 28
SEA10:25 amSeattle/Tacoma Intl
2h 18m
SFO12:43 pmSan Francisco
$137
Find similar
Delta
Oct 21
SFO1:45 pmSan Francisco
2h 25m
SEA4:10 pmSeattle/Tacoma Intl
Oct 30
SEA9:25 pmSeattle/Tacoma Intl
2h 07m
SFO11:32 pmSan Francisco
$147
Find similar
Delta
Oct 25
SFO10:35 amSan Francisco
2h 20m
SEA12:55 pmSeattle/Tacoma Intl
Oct 27
SEA9:25 pmSeattle/Tacoma Intl
2h 08m
SFO11:33 pmSan Francisco
$148
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Seattle 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 1, 2025.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/21

9:34 am-11:46 am

Nonstop2h 12m

Seattle/Tacoma Intl

Fri 10/24

7:00 am-9:16 am

Nonstop2h 16m

$135

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 10/25

6:20 pm-8:35 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Mon 10/27

9:32 pm-11:50 pm

Nonstop2h 18m

$136

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/21

6:00 am-8:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Tue 10/28

10:25 am-12:43 pm

Nonstop2h 18m

$137

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/21

5:16 pm-7:31 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Sat 10/25

12:00 pm-4:27 pm

1 stop4h 27m

$138

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/21

2:40 pm-4:58 pm

Nonstop2h 18m

Seattle/Tacoma Intl

Thu 10/23

8:00 am-10:22 am

Nonstop2h 22m

$139

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 10/25

6:20 pm-8:35 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Mon 10/27

9:32 pm-11:50 pm

Nonstop2h 18m

$140

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 10/29

9:55 pm-9:18 am

1 stop11h 23m

Seattle/Tacoma Intl

Mon 11/3

7:17 pm-12:11 am

1 stop4h 54m

$144

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 10/21

1:45 pm-4:10 pm

Nonstop2h 25m

Seattle/Tacoma Intl

Thu 10/30

9:25 pm-11:32 pm

Nonstop2h 07m

$147

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/24

8:21 pm-12:07 pm

1 stop15h 46m

Seattle/Tacoma Intl

Sun 10/26

4:11 pm-5:05 pm

1 stop24h 54m

$164

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 10/25

4:30 pm-6:45 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Sun 10/26

7:00 am-9:13 am

Nonstop2h 13m

$168

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 Seattle from

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

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 Seattle?

In general, January is the cheapest month to fly from San Francisco to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $201. If you don’t want to visit Seattle in January, then you should wait until October to fly from San Francisco, when ticket prices are also cheap, with an average price of $203.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from San Francisco is on a Friday. momondo users have found tickets for Friday departures for as low as $300. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $434.

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

Flying to Seattle from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $277 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $384. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $242 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Francisco for as low as $152 on momondo.

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

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

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

As of October 2025, prices for San Francisco to Seattle flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to Seattle

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

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

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

Best Price Found

$133

Fastest flight time

1h 56m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from San Francisco in the past 72 hours is $133. The best round-trip flight deal from San Francisco to Seattle found on momondo in the last 72 hours is $226.
The fastest flight from San Francisco to Seattle takes 1h 56m
Direct flights go from San Francisco to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

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

    San Francisco and Seattle/Tacoma Intl are 678.2 mi apart from one another. Flights usually cover this in 2h 10m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from San Francisco Airport to Seattle/Tacoma Intl Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

Best airlines flying from San Francisco to Seattle

Compare and see reviews for airlines that fly from San Francisco to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $100Free CancellationRating
5.8
3,154 reviews
Search Frontier flights
DeltaPriceFrom $110Free CancellationRating
7.9
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $128Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $130Free CancellationRating
7.8
2,762 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $136Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Alaska Airlines Flights From San Francisco to Seattle

    Alaska Airlines is one of the most popular airlines flying from San Francisco to Seattle, operating 13 flights/week on average for this route. A good Alaska Airlines flight deal for San Francisco to Seattle starts from $136 round-trip, up to an average price of $250. Our users have rated Alaska Airlines at 8.0/10.

  • Delta Flights From San Francisco to Seattle

    Delta is also a popular choice for this route. Delta flight deals for San Francisco to Seattle start from as low as $110 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $199. Delta operates 20 flights to Seattle from San Francisco in an average week. Users have rated it 7.9/10 across 7,961 reviews.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Puyallup
Marysville
Federal Way
Tukwila
Kirkland
Fife
Centralia
Shoreline
Lakewood
Cle Elum
Redmond
Westport

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Seattle for you.

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

Yes. momondo allows you to filter the results for San Francisco to Seattle flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to Seattle.

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

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

An easier way to manage your Seattle 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.
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