Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Francisco to Seattle from £45

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 22/6. 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.

Find the cheapest flights from San Francisco to Seattle

Cheap return flights

Hawaiian Airlines Logo
20:49 - 22:59SFO-SEA
2h 10mdirect
Hawaiian Airlines Logo
21:33 - 23:44SEA-SFO
2h 11mdirect
£93Hawaiian Airlines
Find Deal
Sat, 7 Jun - Mon, 9 Jun
Alaska Airlines Logo
16:44 - 18:54SFO-SEA
2h 10mdirect
Alaska Airlines Logo
20:26 - 22:40SEA-SFO
2h 14mdirect
£94Alaska Airlines
Find Deal
Wed, 23 Jul - Wed, 23 Jul
Delta Logo
20:55 - 23:15SFO-SEA
2h 20mdirect
Delta Logo
06:05 - 08:22SEA-SFO
2h 17mdirect
£99Delta
Find Deal
Sat, 14 Jun - Sat, 21 Jun
Southwest Logo
19:45 - 00:30SFO-SEA
4h 45m1 stop
Southwest Logo
18:15 - 23:25SEA-SFO
5h 10m1 stop
£110Southwest
Find Deal
Tue, 10 Jun - Thu, 12 Jun
Southwest Logo
19:15 - 00:30SFO-SEA
5h 15m1 stop
Southwest Logo
18:15 - 23:25SEA-SFO
5h 10m1 stop
£114Southwest
Find Deal
Mon, 14 Jul - Thu, 17 Jul
Delta Logo
05:55 - 08:14SFO-SEA
2h 19mdirect
Delta Logo
22:05 - 00:20SEA-SFO
2h 15mdirect
£127Delta
Find Deal
Thu, 12 Jun - Fri, 13 Jun
Frontier Logo
15:42 - 14:11SFO-SEA
22h 29m1 stop
Frontier Logo
19:48 - 18:09SEA-SFO
22h 21m1 stop
£138Frontier
Find Deal
Thu, 12 Jun - Thu, 19 Jun
 Logo
20:49 - 23:02SFO-SEA
2h 13mdirect
 Logo
15:11 - 12:15SEA-SFO
21h 04m1 stop
Mon, 30 Jun - Mon, 7 Jul
Frontier Logo
22:11 - 13:03SFO-SEA
14h 52m1 stop
Frontier Logo
15:05 - 12:19SEA-SFO
21h 14m1 stop
£147Frontier
Find Deal
Fri, 30 May - Mon, 2 Jun
 Logo
06:00 - 13:37SFO-SEA
7h 37m1 stop
 Logo
20:01 - 22:11SEA-SFO
2h 10mdirect
Fri, 30 May - Mon, 2 Jun

Delta flights from San Francisco to Seattle

Our best Delta deals on San Francisco to Seattle flight tickets
Delta
14 Jun
SFO20:55San Francisco
2h 20m
SEA23:15Seattle/Tacoma Intl
21 Jun
SEA06:05Seattle/Tacoma Intl
2h 17m
SFO08:22San Francisco
Delta
12 Jun
SFO05:55San Francisco
2h 19m
SEA08:14Seattle/Tacoma Intl
13 Jun
SEA22:05Seattle/Tacoma Intl
2h 15m
SFO00:20San Francisco
Delta
3 Jul
SFO05:55San Francisco
2h 19m
SEA08:14Seattle/Tacoma Intl
5 Jul
SEA06:05Seattle/Tacoma Intl
2h 17m
SFO08:22San Francisco

United Airlines flights from San Francisco to Seattle

Our best United Airlines deals on San Francisco to Seattle flight tickets
United Airlines
26 May
SFO06:30San Francisco
2h 19m
SEA08:49Seattle/Tacoma Intl
6 Jun
SEA05:05Seattle/Tacoma Intl
2h 12m
SFO07:17San Francisco
United Airlines
7 Jun
SFO22:50San Francisco
2h 09m
SEA00:59Seattle/Tacoma Intl
15 Jun
SEA05:05Seattle/Tacoma Intl
2h 12m
SFO07:17San Francisco
United Airlines
7 Jun
SFO22:50San Francisco
2h 09m
SEA00:59Seattle/Tacoma Intl
9 Jun
SEA07:20Seattle/Tacoma Intl
2h 16m
SFO09:36San 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 £148, 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, Monday is the cheapest day to fly to Seattle from San Francisco. The lowest ticket price found for a Monday departure recently was £170. 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 Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Wednesday is £301.

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 £226. 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 £273.

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 £117 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

£45

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 £45. 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)

  • 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.

  • 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 £104Free 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 20 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 £138 (round-trip), much lower than the average airfare cost of £239 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.


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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 21/5
Wed 28/5

Find better results for your trip to the United States