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Cheap flights from San Francisco to Seattle from $104

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 11/10. 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 return flights

Delta Logo
13:59 - 16:14SFO-SEA
2h 15mdirect
Delta Logo
20:10 - 22:30SEA-SFO
2h 20mdirect
$207Delta
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Tue, 3 Mar - Wed, 4 Mar
Alaska Airlines Logo
09:34 - 11:46SFO-SEA
2h 12mdirect
Alaska Airlines Logo
08:00 - 11:51SEA-SFO
3h 51m1 stop
$210Alaska Airlines
Find Deal
Wed, 15 Oct - Mon, 20 Oct
Alaska Airlines Logo
11:30 - 13:45SFO-SEA
2h 15mdirect
Alaska Airlines Logo
20:15 - 22:29SEA-SFO
2h 14mdirect
$212Alaska Airlines
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Wed, 1 Oct - Sat, 4 Oct
Frontier Logo
21:55 - 09:18SFO-SEA
11h 23m1 stop
Frontier Logo
12:58 - 22:27SEA-SFO
9h 29m1 stop
$218Frontier
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Wed, 29 Oct - Wed, 5 Nov
Hawaiian Airlines Logo
19:37 - 22:00SFO-SEA
2h 23mdirect
Hawaiian Airlines Logo
05:20 - 08:55SEA-SFO
3h 35m1 stop
$219Hawaiian Airlines
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Sat, 15 Nov - Sun, 16 Nov
Hawaiian Airlines Logo
19:54 - 22:15SFO-SEA
2h 21mdirect
Hawaiian Airlines Logo
07:00 - 09:16SEA-SFO
2h 16mdirect
$221Hawaiian Airlines
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Wed, 15 Oct - Thu, 16 Oct
Southwest Logo
14:05 - 22:00SFO-SEA
7h 55m2 stops
Southwest Logo
17:00 - 23:05SEA-SFO
6h 05m1 stop
$244Southwest
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Tue, 7 Oct - Wed, 8 Oct
Southwest Logo
07:00 - 17:30SFO-SEA
10h 30m1 stop
Southwest Logo
13:20 - 21:20SEA-SFO
8h 00m2 stops
$253Southwest
Find Deal
Sat, 18 Oct - Tue, 21 Oct
United Airlines Logo
21:00 - 23:15SFO-SEA
2h 15mdirect
United Airlines Logo
07:00 - 09:20SEA-SFO
2h 20mdirect
$266United Airlines
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Fri, 17 Oct - Sun, 19 Oct
United Airlines Logo
21:00 - 23:15SFO-SEA
2h 15mdirect
United Airlines Logo
08:42 - 10:59SEA-SFO
2h 17mdirect
$280United Airlines
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Fri, 10 Oct - Sat, 11 Oct

Alaska Airlines flights from San Francisco to Seattle

Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines
15 Oct
SFO09:34San Francisco
2h 12m
SEA11:46Seattle/Tacoma Intl
20 Oct
SEA08:00Seattle/Tacoma Intl
3h 51m
1 stop
SFO11:51San Francisco
$210
Find similar
Alaska Airlines
1 Oct
SFO11:30San Francisco
2h 15m
SEA13:45Seattle/Tacoma Intl
4 Oct
SEA20:15Seattle/Tacoma Intl
2h 14m
SFO22:29San Francisco
$212
Find similar
Alaska Airlines
7 Oct
SFO08:00San Francisco
6h 35m
1 stop
SEA14:35Seattle/Tacoma Intl
7 Oct
SEA17:59Seattle/Tacoma Intl
2h 17m
SFO20:16San Francisco
$227
Find similar

Southwest flights from San Francisco to Seattle

Our best Southwest deals on San Francisco to Seattle flight tickets
Southwest
7 Oct
SFO14:05San Francisco
7h 55m
2 stops
SEA22:00Seattle/Tacoma Intl
8 Oct
SEA17:00Seattle/Tacoma Intl
6h 05m
1 stop
SFO23:05San Francisco
$244
Find similar
Southwest
18 Oct
SFO07:00San Francisco
10h 30m
1 stop
SEA17:30Seattle/Tacoma Intl
21 Oct
SEA13:20Seattle/Tacoma Intl
8h 00m
2 stops
SFO21:20San Francisco
$253
Find similar
Southwest
30 Oct
SFO15:10San Francisco
8h 55m
2 stops
SEA00:05Seattle/Tacoma Intl
3 Nov
SEA14:20Seattle/Tacoma Intl
8h 10m
1 stop
SFO22:30San Francisco
$256
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momondo Fare Finder

 
Customise 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 78,305 searches. Data last updated 15 September 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 3/3

13:59-16:14

Nonstop2h 15m

Seattle/Tacoma Intl

Wed 4/3

20:10-22:30

Nonstop2h 20m

$207

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 15/10

09:34-11:46

Nonstop2h 12m

Seattle/Tacoma Intl

Mon 20/10

08:00-11:51

1 stop3h 51m

$210

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 1/10

11:30-13:45

Nonstop2h 15m

Seattle/Tacoma Intl

Sat 4/10

20:15-22:29

Nonstop2h 14m

$212

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 29/10

21:55-09:18

1 stop11h 23m

Seattle/Tacoma Intl

Wed 5/11

12:58-22:27

1 stop9h 29m

$218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 15/11

19:37-22:00

Nonstop2h 23m

Seattle/Tacoma Intl

Sun 16/11

05:20-08:55

1 stop3h 35m

$219

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 15/10

19:54-22:15

Nonstop2h 21m

Seattle/Tacoma Intl

Thu 16/10

07:00-09:16

Nonstop2h 16m

$221

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 7/10

14:05-22:00

2 stops7h 55m

Seattle/Tacoma Intl

Wed 8/10

17:00-23:05

1 stop6h 05m

$244

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 18/10

07:00-17:30

1 stop10h 30m

Seattle/Tacoma Intl

Tue 21/10

13:20-21:20

2 stops8h 00m

$253

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 17/10

21:00-23:15

Nonstop2h 15m

Seattle/Tacoma Intl

Sun 19/10

07:00-09:20

Nonstop2h 20m

$266

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/10

21:00-23:15

Nonstop2h 15m

Seattle/Tacoma Intl

Sat 11/10

08:42-10:59

Nonstop2h 17m

$280

Flights are sorted by cheapest return 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?

The month of October is, on average, the cheapest month to fly to Seattle from San Francisco, with most prices found around $296. If you are unable to visit Seattle during the month of October, then departing from San Francisco during the month January is also very affordable. Most momondo users find prices during this month for around $302.

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

The cheapest day to depart from San Francisco to Seattle is on a Sunday. Travellers who choose to depart for Seattle on a Sunday will often find tickets for as low as $287. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Seattle for around $736.

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

According to our data, the cheapest time of day to fly to Seattle is in the afternoon. momondo users have found flights departing from San Francisco to Seattle in the afternoon for as low as $287. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is in the evening when prices are around $686.

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 $361 when searching weeks before you fly. 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 $228 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 September 2025, prices for San Francisco to Seattle flights are approximately 5% more expensive 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 return 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

$111

Fastest flight time

2h 07m

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 $111. The best return flight deal from San Francisco to Seattle found on momondo in the last 72 hours is $454.
The fastest flight from San Francisco to Seattle takes 2h 07m
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?

    There are 1091.5 km between San Francisco and Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 2h 07m.

  • 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 are updated daily.

  • 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 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 stopovers 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 San Francisco Airport to Seattle/Tacoma Intl Airport.

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

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl 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 licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl 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 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
Alaska AirlinesPriceFrom $220Free cancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From San Francisco to Seattle

    Across 14 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $191, with the best Alaska Airlines deals starting from $147 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac

Why use momondo?

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

Finding the right flight to Seattle from San Francisco is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

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

Yes. All flights to Seattle from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from San Francisco.

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

Price alerts on flights to Seattle from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Seattle trip

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