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Cheap flights from Seattle to San Francisco 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 Seattle to San Francisco departing on 20/5. 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
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Cheap return flights

These are some of the best return flight deals from Seattle to San Francisco that have been recently found on momondo from popular airlines, departing in the coming months.
Alaska Airlines Logo
13:40 - 15:51SEA-SFO
2h 11mdirect
Alaska Airlines Logo
18:55 - 21:12SFO-SEA
2h 17mdirect
£98Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Delta Logo
21:50 - 00:04SEA-SFO
2h 14mdirect
Delta Logo
13:45 - 16:08SFO-SEA
2h 23mdirect
£102Delta
Find Deal
Tue, 20 May - Wed, 21 May
Alaska Airlines Logo
11:29 - 13:43SEA-SFO
2h 14mdirect
Alaska Airlines Logo
17:25 - 22:59SFO-SEA
5h 34m1 stop
£105Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
United Airlines Logo
09:45 - 12:01SEA-SFO
2h 16mdirect
United Airlines Logo
06:30 - 08:49SFO-SEA
2h 19mdirect
£117United Airlines
Find Deal
Fri, 23 May - Mon, 26 May
Southwest Logo
14:45 - 23:25SEA-SFO
8h 40m2 stops
Southwest Logo
19:15 - 00:30SFO-SEA
5h 15m1 stop
£128Southwest
Find Deal
Tue, 10 Jun - Fri, 13 Jun
Southwest Logo
16:55 - 23:30SEA-SFO
6h 35m1 stop
Southwest Logo
16:20 - 01:05SFO-SEA
8h 45m2 stops
£136Southwest
Find Deal
Wed, 18 Jun - Sat, 21 Jun
Frontier Logo
06:00 - 14:44SEA-SFO
8h 44m1 stop
Frontier Logo
08:34 - 19:32SFO-SEA
10h 58m1 stop
£154Frontier
Find Deal
Tue, 13 May - Thu, 15 May
Frontier Logo
06:24 - 23:34SEA-SFO
17h 10m1 stop
Frontier Logo
16:17 - 00:44SFO-SEA
8h 27m1 stop
£155Frontier
Find Deal
Wed, 14 May - Sat, 17 May
United Airlines Logo
05:05 - 07:17SEA-SFO
2h 12mdirect
United Airlines Logo
22:50 - 00:59SFO-SEA
2h 09mdirect
£157United Airlines
Find Deal
Thu, 5 Jun - Fri, 13 Jun
Hawaiian Airlines Logo
12:58 - 18:26SEA-SFO
5h 28m1 stop
Hawaiian Airlines Logo
19:49 - 22:00SFO-SEA
2h 11mdirect
£160Hawaiian Airlines
Find Deal
Wed, 14 May - Mon, 19 May

Frontier flights from Seattle to San Francisco

Our best Frontier deals on Seattle to San Francisco flight tickets
Frontier
13 May
SEA06:00Seattle/Tacoma Intl
8h 44m
1 stop
SFO14:44San Francisco
17 May
SFO16:17San Francisco
8h 27m
1 stop
SEA00:44Seattle/Tacoma Intl
Frontier
13 May
SEA06:00Seattle/Tacoma Intl
8h 44m
1 stop
SFO14:44San Francisco
15 May
SFO08:34San Francisco
10h 58m
1 stop
SEA19:32Seattle/Tacoma Intl
Frontier
14 May
SEA06:24Seattle/Tacoma Intl
17h 10m
1 stop
SFO23:34San Francisco
17 May
SFO16:17San Francisco
8h 27m
1 stop
SEA00:44Seattle/Tacoma Intl

Hawaiian Airlines flights from Seattle to San Francisco

Our best Hawaiian Airlines deals on Seattle to San Francisco flight tickets
Hawaiian Airlines
14 May
SEA12:58Seattle/Tacoma Intl
5h 28m
1 stop
SFO18:26San Francisco
19 May
SFO19:49San Francisco
2h 11m
SEA22:00Seattle/Tacoma Intl
Hawaiian Airlines
14 May
SEA15:36Seattle/Tacoma Intl
2h 13m
SFO17:49San Francisco
19 May
SFO16:47San Francisco
2h 09m
SEA18:56Seattle/Tacoma Intl
Hawaiian Airlines
1 May
SEA07:00Seattle/Tacoma Intl
2h 15m
SFO09:15San Francisco
31 May
SFO19:49San Francisco
2h 11m
SEA22:00Seattle/Tacoma Intl

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?

The month of January is, on average, the cheapest month to fly to San Francisco from Seattle, with most prices found around £153. If you are unable to visit San Francisco during the month of January, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around £154.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart on your flight to San Francisco is on a Wednesday when prices can be found for as low as £0. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to San Francisco on a Sunday will generally be more expensive and average around £1,206. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to San Francisco is in the morning. Flights from Seattle to San Francisco during this time can be as low as £180. Try not to purchase tickets in the afternoon because they tend to be around £669. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 21 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £174 when searching 21 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 £120 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 April 2025, prices for Seattle to San Francisco flights are approximately 14% more expensive 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 return 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

£51

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 £51. The best return flight deal from Seattle to San Francisco found on momondo in the last 72 hours is £98.
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)

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

    The distance between Seattle/Tacoma Intl and San Francisco is about 678.2 mi. Typically, this will take 2h 10m by plane in normal conditions.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 required for your trip to San Francisco 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 San Francisco 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 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
Alaska AirlinesPriceFrom £83Free CancellationRating
8.0
9,968 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From Seattle to San Francisco

    Alaska Airlines flight deals from Seattle to San Francisco start from £111 round-trip. Over the 17 Alaska Airlines flights for this route in a normal week, average airfare is usually £217 round-trip - but some users have found much cheaper deals with momondo.


Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Carmel-by-the-Sea
Seaside
Santa Clara
Newark
Vacaville
Salinas
Vallejo
Rohnert Park
South San Francisco
Campbell
Santa Cruz
Sunnyvale
Calistoga
Windsor
Carmel Valley
Bodega Bay
Watsonville
Milpitas
Elk Grove
San Ramon

Why use momondo?

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

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 San Francisco from Seattle.

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

Flights from Seattle to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Seattle to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Seattle to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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