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Cheap flights from Seattle to San Francisco from £49

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 21/5. 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

KAYAK's recommended return flight deals from the most popular airlines that fly from Seattle to San Francisco.
Hawaiian Airlines Logo
13:40 - 15:53SEA-SFO
2h 13mdirect
Hawaiian Airlines Logo
18:49 - 20:59SFO-SEA
2h 10mdirect
£101Hawaiian Airlines
Find Deal
Tue, 6 May - Tue, 6 May
Alaska Airlines Logo
13:40 - 15:51SEA-SFO
2h 11mdirect
Alaska Airlines Logo
19:49 - 22:00SFO-SEA
2h 11mdirect
£102Alaska Airlines
Find Deal
Wed, 28 May - Wed, 28 May
Alaska Airlines Logo
18:59 - 21:13SEA-SFO
2h 14mdirect
Alaska Airlines Logo
06:00 - 08:05SFO-SEA
2h 05mdirect
£107Alaska Airlines
Find Deal
Sat, 3 May - Tue, 6 May
Delta Logo
10:25 - 12:51SEA-SFO
2h 26mdirect
Delta Logo
06:05 - 08:27SFO-SEA
2h 22mdirect
£115Delta
Find Deal
Sat, 3 May - Sun, 4 May
Delta Logo
15:15 - 17:29SEA-SFO
2h 14mdirect
Delta Logo
09:10 - 11:38SFO-SEA
2h 28mdirect
£116Delta
Find Deal
Sat, 3 May - Sun, 4 May
Southwest Logo
10:10 - 18:00SEA-SFO
7h 50m2 stops
Southwest Logo
19:45 - 00:30SFO-SEA
4h 45m1 stop
£123Southwest
Find Deal
Sat, 7 Jun - Tue, 10 Jun
Southwest Logo
12:35 - 18:15SEA-SFO
5h 40m1 stop
Southwest Logo
12:45 - 22:30SFO-SEA
9h 45m2 stops
£126Southwest
Find Deal
Sat, 3 May - Wed, 7 May
United Airlines Logo
17:13 - 00:07SEA-SFO
6h 54m1 stop
United Airlines Logo
08:00 - 14:00SFO-SEA
6h 00m1 stop
£138United Airlines
Find Deal
Mon, 5 May - Thu, 8 May
United Airlines Logo
07:00 - 09:13SEA-SFO
2h 13mdirect
United Airlines Logo
07:06 - 14:00SFO-SEA
6h 54m1 stop
£143United Airlines
Find Deal
Mon, 5 May - Fri, 9 May
 Logo
07:00 - 09:15SEA-SFO
2h 15mdirect
 Logo
14:30 - 16:40SFO-SEA
2h 10mdirect
Wed, 23 Apr - Wed, 23 Apr

Southwest flights from Seattle to San Francisco

Our best Southwest deals on Seattle to San Francisco flight tickets
Southwest
7 Jun
SEA10:10Seattle/Tacoma Intl
7h 50m
2 stops
SFO18:00San Francisco
10 Jun
SFO19:45San Francisco
4h 45m
1 stop
SEA00:30Seattle/Tacoma Intl
Southwest
3 May
SEA12:35Seattle/Tacoma Intl
5h 40m
1 stop
SFO18:15San Francisco
7 May
SFO12:45San Francisco
9h 45m
2 stops
SEA22:30Seattle/Tacoma Intl
Southwest
3 May
SEA12:35Seattle/Tacoma Intl
5h 40m
1 stop
SFO18:15San Francisco
5 May
SFO15:45San Francisco
8h 40m
2 stops
SEA00:25Seattle/Tacoma Intl

Alaska Airlines flights from Seattle to San Francisco

Our best Alaska Airlines deals on Seattle to San Francisco flight tickets
Alaska Airlines
28 May
SEA13:40Seattle/Tacoma Intl
2h 11m
SFO15:51San Francisco
28 May
SFO19:49San Francisco
2h 11m
SEA22:00Seattle/Tacoma Intl
Alaska Airlines
3 May
SEA18:59Seattle/Tacoma Intl
2h 14m
SFO21:13San Francisco
6 May
SFO06:00San Francisco
2h 05m
SEA08:05Seattle/Tacoma Intl
Alaska Airlines
13 May
SEA08:13Seattle/Tacoma Intl
2h 17m
SFO10:30San Francisco
13 May
SFO13:21San Francisco
6h 59m
1 stop
SEA20:20Seattle/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 £160. 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 £161.

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 £1,263. 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 £188. Try not to purchase tickets in the afternoon because they tend to be around £700. 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 £182 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 £130 on momondo.

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

There are 3 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 13% 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

£49

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 £49. The best return flight deal from Seattle to San Francisco found on momondo in the last 72 hours is £101.
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 11m 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 £86Free CancellationRating
8.0
9,848 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 8 Alaska Airlines flights for this route in a normal week, average airfare is usually £215 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
Newark
Vacaville
Salinas
Vallejo
Calistoga
Rohnert Park
Palo Alto
South San Francisco
Campbell
Santa Cruz
Sunnyvale
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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