Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Francisco to Seattle from £51

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 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Francisco to Seattle

Cheap return flights

Delta Logo
13:59 - 16:14SFO-SEA
2h 15mdirect
Delta Logo
20:10 - 22:30SEA-SFO
2h 20mdirect
£101Delta
Find Deal
tis, 3 mar - ons, 4 mar
Alaska Airlines Logo
08:20 - 10:34SFO-SEA
2h 14mdirect
Alaska Airlines Logo
12:00 - 16:27SEA-SFO
4h 27m1 stop
£103Alaska Airlines
Find Deal
ons, 15 okt - ons, 15 okt
Alaska Airlines Logo
06:00 - 08:15SFO-SEA
2h 15mdirect
Alaska Airlines Logo
15:50 - 18:08SEA-SFO
2h 18mdirect
£106Alaska Airlines
Find Deal
tors, 19 feb - lör, 21 feb
Hawaiian Airlines Logo
06:00 - 08:15SFO-SEA
2h 15mdirect
Hawaiian Airlines Logo
08:05 - 10:15SEA-SFO
2h 10mdirect
£106Hawaiian Airlines
Find Deal
tors, 19 feb - lör, 21 feb
Alaska Airlines Logo
09:34 - 11:46SFO-SEA
2h 12mdirect
Alaska Airlines Logo
07:00 - 09:16SEA-SFO
2h 16mdirect
£108Alaska Airlines
Find Deal
ons, 15 okt - tors, 23 okt
Hawaiian Airlines Logo
14:46 - 17:05SFO-SEA
2h 19mdirect
Hawaiian Airlines Logo
13:31 - 15:43SEA-SFO
2h 12mdirect
£108Hawaiian Airlines
Find Deal
tors, 30 okt - tors, 6 nov
Southwest Logo
05:30 - 11:45SFO-SEA
6h 15m1 stop
Southwest Logo
17:00 - 23:05SEA-SFO
6h 05m1 stop
£113Southwest
Find Deal
tis, 7 okt - ons, 8 okt
Frontier Logo
21:55 - 09:18SFO-SEA
11h 23m1 stop
Frontier Logo
13:08 - 00:14SEA-SFO
11h 06m1 stop
£116Frontier
Find Deal
tors, 30 okt - tors, 6 nov
Southwest Logo
15:50 - 23:00SFO-SEA
7h 10m1 stop
Southwest Logo
07:45 - 16:45SEA-SFO
9h 00m2 stops
£117Southwest
Find Deal
ons, 22 okt - lör, 25 okt
Multiple Airlines Logo
06:00 - 13:02SFO-SEA
7h 02m1 stop
Multiple Airlines Logo
21:32 - 23:50SEA-SFO
2h 18mdirect
£122Multiple Airlines
Find Deal
tors, 30 okt - tors, 6 nov

Alaska Airlines flights from San Francisco to Seattle

Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines
15 Oct
SFO08:20San Francisco
2h 14m
SEA10:34Seattle/Tacoma Intl
15 Oct
SEA12:00Seattle/Tacoma Intl
4h 27m
1 stop
SFO16:27San Francisco
£103
Find similar
Alaska Airlines
19 Feb
SFO06:00San Francisco
2h 15m
SEA08:15Seattle/Tacoma Intl
21 Feb
SEA15:50Seattle/Tacoma Intl
2h 18m
SFO18:08San Francisco
£106
Find similar
Alaska Airlines
15 Oct
SFO09:34San Francisco
2h 12m
SEA11:46Seattle/Tacoma Intl
23 Oct
SEA07:00Seattle/Tacoma Intl
2h 16m
SFO09:16San Francisco
£108
Find similar

Hawaiian Airlines flights from San Francisco to Seattle

Our best Hawaiian Airlines deals on San Francisco to Seattle flight tickets
Hawaiian Airlines
19 Feb
SFO06:00San Francisco
2h 15m
SEA08:15Seattle/Tacoma Intl
21 Feb
SEA08:05Seattle/Tacoma Intl
2h 10m
SFO10:15San Francisco
£106
Find similar
Hawaiian Airlines
30 Oct
SFO14:46San Francisco
2h 19m
SEA17:05Seattle/Tacoma Intl
6 Nov
SEA13:31Seattle/Tacoma Intl
2h 12m
SFO15:43San Francisco
£108
Find similar
Hawaiian Airlines
15 Oct
SFO08:00San Francisco
6h 35m
1 stop
SEA14:35Seattle/Tacoma Intl
15 Oct
SEA17:55Seattle/Tacoma Intl
6h 03m
1 stop
SFO23:58San Francisco
£145
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 279,928 searches. Data last updated 18 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

tis 3/3

13:59-16:14

Nonstop2h 15m

Seattle/Tacoma Intl

ons 4/3

20:10-22:30

Nonstop2h 20m

£101

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

ons 15/10

08:20-10:34

Nonstop2h 14m

Seattle/Tacoma Intl

ons 15/10

12:00-16:27

1 stop4h 27m

£103

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tors 19/2

06:00-08:15

Nonstop2h 15m

Seattle/Tacoma Intl

lör 21/2

15:50-18:08

Nonstop2h 18m

£106

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tors 19/2

06:00-08:15

Nonstop2h 15m

Seattle/Tacoma Intl

lör 21/2

08:05-10:15

Nonstop2h 10m

£106

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

ons 15/10

09:34-11:46

Nonstop2h 12m

Seattle/Tacoma Intl

tors 23/10

07:00-09:16

Nonstop2h 16m

£108

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tors 30/10

14:46-17:05

Nonstop2h 19m

Seattle/Tacoma Intl

tors 6/11

13:31-15:43

Nonstop2h 12m

£108

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tis 7/10

05:30-11:45

1 stop6h 15m

Seattle/Tacoma Intl

ons 8/10

17:00-23:05

1 stop6h 05m

£113

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tors 30/10

21:55-09:18

1 stop11h 23m

Seattle/Tacoma Intl

tors 6/11

13:08-00:14

1 stop11h 06m

£116

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

ons 22/10

15:50-23:00

1 stop7h 10m

Seattle/Tacoma Intl

lör 25/10

07:45-16:45

2 stops9h 00m

£116

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

tors 30/10

06:00-13:02

1 stop7h 02m

Seattle/Tacoma Intl

tors 6/11

21:32-23:50

Nonstop2h 18m

£122

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 cheapest month to fly to Seattle from San Francisco is in October. Flight prices, which tend to average around £144, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Seattle, with average flight prices from San Francisco averaging around £147.

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

According to our data, Friday is the cheapest day to fly to Seattle from San Francisco. The lowest ticket price found for a Friday departure recently was £151. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Saturday is £484.

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 £239. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive, with an average ticket price of £484.

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 £176 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 £111 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 4% 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

Fastest flight time

2h 10m

Direct flights

Every day

Airports in Seattle

1 airport
The fastest flight from San Francisco to Seattle takes 2h 10m
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?

    The straight-line distance from San Francisco to Seattle/Tacoma Intl is 678.2 mi. Typically, this will take 2h 07m by plane in normal conditions.

  • 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 travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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 £115Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From San Francisco to Seattle

    Alaska Airlines flies from San Francisco to Seattle around 14 times per week, with 10,000 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from San Francisco to Seattle in the last 72 hours was £157 (round-trip), much lower than the average airfare cost of £274 for Alaska Airlines flights on this route.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Fife
Tukwila
Renton
SeaTac

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from San Francisco.

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

Yes. momondo enables you to select and highlight flights to Seattle from San Francisco with this policy.

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

momondo helps you find the best flight between San Francisco and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
lör 18/10
lör 25/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States