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Cheap flights from San Francisco to Seattle from £52

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 27/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

These are some of the best return flight deals from San Francisco to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.
Hawaiian Airlines Logo
07:00 - 09:09SFO-SEA
2h 09mdirect
Hawaiian Airlines Logo
11:29 - 13:43SEA-SFO
2h 14mdirect
£93Hawaiian Airlines
Find Deal
Wed, 11 Jun - Wed, 11 Jun
Alaska Airlines Logo
08:00 - 10:13SFO-SEA
2h 13mdirect
Alaska Airlines Logo
13:40 - 15:51SEA-SFO
2h 11mdirect
£98Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Hawaiian Airlines Logo
17:49 - 20:00SFO-SEA
2h 11mdirect
Hawaiian Airlines Logo
13:40 - 15:51SEA-SFO
2h 11mdirect
£103Hawaiian Airlines
Find Deal
Wed, 28 May - Wed, 4 Jun
Alaska Airlines Logo
09:25 - 11:35SFO-SEA
2h 10mdirect
Alaska Airlines Logo
14:48 - 21:37SEA-SFO
6h 49m1 stop
£106Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Delta Logo
06:10 - 08:30SFO-SEA
2h 20mdirect
Delta Logo
06:15 - 08:28SEA-SFO
2h 13mdirect
£111Delta
Find Deal
Sat, 31 May - Sun, 1 Jun
Delta Logo
05:55 - 08:14SFO-SEA
2h 19mdirect
Delta Logo
22:05 - 00:20SEA-SFO
2h 15mdirect
£114Delta
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Southwest Logo
17:55 - 01:15SFO-SEA
7h 20m1 stop
Southwest Logo
16:55 - 23:30SEA-SFO
6h 35m1 stop
£121Southwest
Find Deal
Wed, 11 Jun - Wed, 18 Jun
Southwest Logo
15:55 - 01:15SFO-SEA
9h 20m2 stops
Southwest Logo
18:15 - 23:25SEA-SFO
5h 10m1 stop
£129Southwest
Find Deal
Tue, 10 Jun - Thu, 12 Jun
United Airlines Logo
22:50 - 00:59SFO-SEA
2h 09mdirect
United Airlines Logo
05:05 - 07:17SEA-SFO
2h 12mdirect
£143United Airlines
Find Deal
Thu, 19 Jun - Sun, 22 Jun
United Airlines Logo
22:50 - 00:59SFO-SEA
2h 09mdirect
United Airlines Logo
09:45 - 12:01SEA-SFO
2h 16mdirect
£162United Airlines
Find Deal
Fri, 23 May - Wed, 28 May

Southwest flights from San Francisco to Seattle

Our best Southwest deals on San Francisco to Seattle flight tickets
Southwest
11 Jun
SFO17:55San Francisco
7h 20m
1 stop
SEA01:15Seattle/Tacoma Intl
18 Jun
SEA16:55Seattle/Tacoma Intl
6h 35m
1 stop
SFO23:30San Francisco
Southwest
10 Jun
SFO15:55San Francisco
9h 20m
2 stops
SEA01:15Seattle/Tacoma Intl
12 Jun
SEA18:15Seattle/Tacoma Intl
5h 10m
1 stop
SFO23:25San Francisco
Southwest
5 Aug
SFO16:45San Francisco
7h 20m
1 stop
SEA00:05Seattle/Tacoma Intl
7 Aug
SEA05:15Seattle/Tacoma Intl
5h 25m
1 stop
SFO10:40San Francisco

United Airlines flights from San Francisco to Seattle

Our best United Airlines deals on San Francisco to Seattle flight tickets
United Airlines
19 Jun
SFO22:50San Francisco
2h 09m
SEA00:59Seattle/Tacoma Intl
22 Jun
SEA05:05Seattle/Tacoma Intl
2h 12m
SFO07:17San Francisco
United Airlines
23 May
SFO22:50San Francisco
2h 09m
SEA00:59Seattle/Tacoma Intl
28 May
SEA09:45Seattle/Tacoma Intl
2h 16m
SFO12:01San Francisco
United Airlines
8 Jun
SFO06:30San Francisco
2h 19m
SEA08:49Seattle/Tacoma Intl
6 Jul
SEA05:10Seattle/Tacoma Intl
2h 12m
SFO07:22San Francisco

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 £147, 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 £150.

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

According to our data, Sunday is the cheapest day to fly to Seattle from San Francisco. The lowest ticket price found for a Sunday departure recently was £124. 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 Friday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Friday is £289.

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 at midday. momondo users have found flights departing from San Francisco to Seattle at midday for as low as £225. 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 afternoon are often more expensive, with an average ticket price of £271.

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 26 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £182 when searching 26 weeks out.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 £116 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 May 2025, prices for San Francisco to Seattle flights are approximately 0% 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

£52

Fastest flight time

2h 04m

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 £52. The best return flight deal from San Francisco to Seattle found on momondo in the last 72 hours is £93.
The fastest flight from San Francisco to Seattle takes 2h 04m
Direct flights go from San Francisco to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • Is flying the fastest way to get from San Francisco to Seattle?

    At 2h 04m, choosing to opt for a flight from San Francisco to Seattle for this trip as opposed to a train from San Francisco to Seattle or a bus from San Francisco to Seattle can save you time on travel.

  • Is flying the cheapest way to get from San Francisco to Seattle?

    A flight from San Francisco to Seattle is currently going to be the least expensive option currently available. You can also find deals for a train from San Francisco to Seattle starting at £210, or consider a bus from San Francisco to Seattle starting at £145. Both of these alternative options are worth considering when looking to reach your destination.

  • 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 04m by plane in normal conditions.

  • What is the carbon footprint of flying from San Francisco to Seattle/Tacoma Intl?

    Flying from San Francisco to Seattle/Tacoma Intl has a carbon footprint of about 553lb. Flight search results on momondo can be sorted by their carbon footprint. Choosing a train for this journey would reduce your carbon footprint from 553lb to 151lb - that is, by about 73%. By bus, this journey’s emissions can be cut to 95lb. This would result in a 83% smaller carbon footprint vs. flying.

  • 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 £103Free CancellationRating
8.0
9,972 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From San Francisco to Seattle

    Alaska Airlines flies from San Francisco to Seattle around 16 times per week, with 9,972 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from San Francisco to Seattle in the last 72 hours was £138 (round-trip), much lower than the average airfare cost of £246 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
Kent
SeaTac
Tukwila
Fife
Mukilteo
Renton

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.


Choose the best way to get from San Francisco to Seattle

Buses

18h 15m
£82 one-way£145 return
Direct · from £145

Distance to city centre

40H1.6 mi
95lb CO2

83% less than flights

Find Buses

San Francisco to Seattle Buses

Trains

22h 10m
£82 one-way£210 return
Direct · from £210

Distance to city centre

EA91.1 mi
151lb CO2

73% less than flights

Find Trains

San Francisco to Seattle Trains

Flights

2h 09m
£52 one-way£93 return
Direct · from £931 stop · from £74

Distance to city centre

SEA11.4 mi

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1 adult
Tue 6/5
Tue 13/5

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