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Cheap flights from San Francisco to Seattle from $78

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 23/8. 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

Alaska Airlines Logo
16:52 - 19:14SFO-SEA
2h 22mdirect
Alaska Airlines Logo
19:05 - 21:20SEA-SFO
2h 15mdirect
$200Alaska Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Alaska Airlines Logo
14:42 - 16:54SFO-SEA
2h 12mdirect
Alaska Airlines Logo
20:08 - 22:23SEA-SFO
2h 15mdirect
$203Alaska Airlines
Find Deal
Wed, 3 Sep - Wed, 3 Sep
Hawaiian Airlines Logo
18:59 - 21:16SFO-SEA
2h 17mdirect
Hawaiian Airlines Logo
15:55 - 18:09SEA-SFO
2h 14mdirect
$205Hawaiian Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Delta Logo
05:55 - 08:11SFO-SEA
2h 16mdirect
Delta Logo
10:25 - 12:45SEA-SFO
2h 20mdirect
$213Delta
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Hawaiian Airlines Logo
06:00 - 08:07SFO-SEA
2h 07mdirect
Hawaiian Airlines Logo
16:03 - 21:18SEA-SFO
5h 15m1 stop
$214Hawaiian Airlines
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Delta Logo
16:44 - 19:00SFO-SEA
2h 16mdirect
Delta Logo
21:20 - 23:29SEA-SFO
2h 09mdirect
$227Delta
Find Deal
Sat, 13 Sep - Mon, 15 Sep
Southwest Logo
07:00 - 14:10SFO-SEA
7h 10m2 stops
Southwest Logo
16:10 - 21:25SEA-SFO
5h 15m1 stop
$251Southwest
Find Deal
Tue, 16 Sep - Tue, 16 Sep
United Airlines Logo
20:45 - 22:59SFO-SEA
2h 14mdirect
United Airlines Logo
19:34 - 21:48SEA-SFO
2h 14mdirect
$256United Airlines
Find Deal
Sat, 30 Aug - Wed, 3 Sep
Southwest Logo
13:00 - 22:30SFO-SEA
9h 30m1 stop
Southwest Logo
09:50 - 18:30SEA-SFO
8h 40m2 stops
$261Southwest
Find Deal
Sat, 20 Sep - Sat, 27 Sep
United Airlines Logo
13:05 - 15:19SFO-SEA
2h 14mdirect
United Airlines Logo
15:19 - 17:35SEA-SFO
2h 16mdirect
$324United Airlines
Find Deal
Tue, 19 Aug - Mon, 25 Aug

Alaska Airlines flights from San Francisco to Seattle

Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines
13 Sept
SFO16:52San Francisco
2h 22m
SEA19:14Seattle/Tacoma Intl
20 Sept
SEA19:05Seattle/Tacoma Intl
2h 15m
SFO21:20San Francisco
$200
Find similar
Alaska Airlines
3 Sept
SFO14:42San Francisco
2h 12m
SEA16:54Seattle/Tacoma Intl
3 Sept
SEA20:08Seattle/Tacoma Intl
2h 15m
SFO22:23San Francisco
$203
Find similar
Alaska Airlines
3 Sept
SFO11:48San Francisco
6h 05m
1 stop
SEA17:53Seattle/Tacoma Intl
3 Sept
SEA20:08Seattle/Tacoma Intl
2h 15m
SFO22:23San Francisco
$219
Find similar

Hawaiian Airlines flights from San Francisco to Seattle

Our best Hawaiian Airlines deals on San Francisco to Seattle flight tickets
Hawaiian Airlines
13 Sept
SFO18:59San Francisco
2h 17m
SEA21:16Seattle/Tacoma Intl
20 Sept
SEA15:55Seattle/Tacoma Intl
2h 14m
SFO18:09San Francisco
$205
Find similar
Hawaiian Airlines
13 Sept
SFO06:00San Francisco
2h 07m
SEA08:07Seattle/Tacoma Intl
20 Sept
SEA16:03Seattle/Tacoma Intl
5h 15m
1 stop
SFO21:18San Francisco
$214
Find similar
Hawaiian Airlines
13 Sept
SFO11:48San Francisco
4h 56m
1 stop
SEA16:44Seattle/Tacoma Intl
20 Sept
SEA11:20Seattle/Tacoma Intl
5h 04m
1 stop
SFO16:24San Francisco
$217
Find similar

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 1 August 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

Sat 13/9

16:52-19:14

Nonstop2h 22m

Seattle/Tacoma Intl

Sat 20/9

19:05-21:20

Nonstop2h 15m

$200

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 3/9

14:42-16:54

Nonstop2h 12m

Seattle/Tacoma Intl

Wed 3/9

20:08-22:23

Nonstop2h 15m

$203

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 13/9

18:59-21:16

Nonstop2h 17m

Seattle/Tacoma Intl

Sat 20/9

15:55-18:09

Nonstop2h 14m

$205

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 13/9

05:55-08:11

Nonstop2h 16m

Seattle/Tacoma Intl

Sat 20/9

10:25-12:45

Nonstop2h 20m

$213

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 13/9

06:00-08:07

Nonstop2h 07m

Seattle/Tacoma Intl

Sat 20/9

16:03-21:18

1 stop5h 15m

$214

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 13/9

16:44-19:00

Nonstop2h 16m

Seattle/Tacoma Intl

Mon 15/9

21:20-23:29

Nonstop2h 09m

$227

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 16/9

07:00-14:10

2 stops7h 10m

Seattle/Tacoma Intl

Tue 16/9

16:10-21:25

1 stop5h 15m

$251

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 30/8

20:45-22:59

Nonstop2h 14m

Seattle/Tacoma Intl

Wed 3/9

19:34-21:48

Nonstop2h 14m

$256

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 20/9

13:00-22:30

1 stop9h 30m

Seattle/Tacoma Intl

Sat 27/9

09:50-18:30

2 stops8h 40m

$261

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 19/8

13:05-15:19

Nonstop2h 14m

Seattle/Tacoma Intl

Mon 25/8

15:19-17:35

Nonstop2h 16m

$324

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 $304. 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 $310.

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 $381. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Seattle for around $799.

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 $297. 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 $716.

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 $368 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 $233 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 August 2025, prices for San Francisco to Seattle flights are approximately 5% 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 return price

  • 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 04m.

  • 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 $228Free cancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From San Francisco to Seattle

    Across 10 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $199, 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

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