Cheap flights from San Francisco to Seattle from £65
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
16 Sep — 23 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in February or January, booked 51 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap flight deals from San Francisco to Seattle
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from San Francisco to Seattle
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 August 2026.
Fri 11/920:53 -
Nonstop2h 17m
Tue 15/919:24 -
Nonstop2h 15m
Deal found 16/8£122
Sat 5/916:46 -
Nonstop2h 16m
Wed 9/907:18 -
Nonstop2h 19m
Deal found 13/8£122
Wed 9/915:26 -
Nonstop2h 13m
Wed 9/919:24 -
Nonstop2h 15m
Deal found 14/8£125
Wed 16/913:45 -
Nonstop2h 13m
Mon 21/920:15 -
1 stop14h 07m
Deal found 13/8£126
Fri 25/921:07 -
Nonstop2h 19m
Sat 26/913:22 -
Nonstop2h 15m
Deal found 14/8£128
Thu 3/910:40 -
Nonstop2h 11m
Wed 9/907:15 -
Nonstop2h 19m
Deal found 13/8£129
Sat 5/915:10 -
1 stop7h 50m
Sun 6/905:10 -
1 stop6h 15m
Deal found 13/8£131
Thu 17/906:23 -
Nonstop2h 17m
Mon 21/921:30 -
Nonstop2h 21m
Deal found 17/8£131
Fri 11/914:15 -
Nonstop2h 15m
Fri 18/907:15 -
Nonstop2h 19m
Deal found 13/8£134
Thu 17/906:00 -
2 stops7h 25m
Thu 24/909:05 -
1 stop7h 25m
Deal found 14/8£134
Mon 31/814:00 -
Nonstop2h 13m
Wed 9/910:55 -
Nonstop2h 18m
Deal found 13/8£137
Best flights from San Francisco to Seattle
Discover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 August 2026.
Fri 18/921:07 -
Nonstop2h 19m
Tue 22/915:30 -
Nonstop2h 15m
Deal found 14/8£128
Sat 12/907:00 -
Nonstop2h 08m
Fri 18/915:45 -
Nonstop2h 15m
Deal found 14/8£128
Wed 16/917:38 -
Nonstop2h 23m
Mon 21/921:30 -
Nonstop2h 21m
Deal found 13/8£129
Tue 15/914:35 -
1 stop6h 40m
Tue 22/911:40 -
1 stop6h 40m
Deal found 17/8£131
Thu 17/906:00 -
2 stops7h 25m
Mon 21/909:05 -
1 stop5h 35m
Deal found 17/8£134
Fri 18/921:07 -
Nonstop2h 19m
Mon 21/910:55 -
Nonstop2h 20m
Deal found 13/8£140
Tue 15/906:50 -
2 stops10h 40m
Thu 24/915:45 -
1 stop7h 10m
Deal found 15/8£134
Wed 9/912:05 -
2 stops7h 10m
Thu 10/914:10 -
1 stop9h 00m
Deal found 17/8£134
Tue 15/907:40 -
2 stops9h 10m
Wed 16/913:45 -
2 stops7h 35m
Deal found 15/8£138
Fri 11/912:30 -
2 stops10h 30m
Tue 15/911:40 -
1 stop6h 40m
Deal found 16/8£147
Direct flights from San Francisco to Seattle
Explore direct flight options from San Francisco to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 August 2026.
Fri 11/920:53 -
Nonstop2h 17m
Tue 15/919:24 -
Nonstop2h 15m
Deal found 16/8£122
Sat 5/916:46 -
Nonstop2h 16m
Wed 9/907:18 -
Nonstop2h 19m
Deal found 13/8£122
Wed 9/915:26 -
Nonstop2h 13m
Wed 9/919:24 -
Nonstop2h 15m
Deal found 14/8£125
Fri 25/921:07 -
Nonstop2h 19m
Sat 26/913:22 -
Nonstop2h 15m
Deal found 14/8£128
Thu 3/910:40 -
Nonstop2h 11m
Thu 10/907:15 -
Nonstop2h 19m
Deal found 13/8£129
Mon 31/814:00 -
Nonstop2h 13m
Sat 5/907:20 -
Nonstop2h 16m
Deal found 13/8£131
Thu 17/906:23 -
Nonstop2h 17m
Mon 21/921:30 -
Nonstop2h 21m
Deal found 17/8£131
Fri 11/914:15 -
Nonstop2h 15m
Fri 18/907:15 -
Nonstop2h 19m
Deal found 13/8£134
Thu 24/922:45 -
Nonstop2h 30m
Sun 27/907:00 -
Nonstop2h 19m
Deal found 17/8£134
Mon 31/814:00 -
Nonstop2h 13m
Wed 9/910:55 -
Nonstop2h 18m
Deal found 13/8£137
Fri 18/920:53 -
Nonstop2h 17m
Tue 29/912:05 -
Nonstop2h 22m
Deal found 14/8£140
Fri 11/910:29 -
Nonstop2h 15m
Fri 11/921:30 -
Nonstop2h 21m
Deal found 14/8£141
Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated 17 August 2026 and is based on user searches.
Mon 31/814:00 -
Nonstop2h 13m
Thu 3/910:35 -
Nonstop2h 22m
Deal found 13/8£137
Thu 3/910:40 -
Nonstop2h 11m
Sat 12/910:36 -
Nonstop2h 18m
Deal found 13/8£129
Sat 5/916:46 -
Nonstop2h 16m
Wed 9/907:18 -
Nonstop2h 19m
Deal found 13/8£122
Sat 5/915:10 -
1 stop7h 50m
Sun 6/905:10 -
1 stop6h 15m
Deal found 13/8£131
Wed 9/915:26 -
Nonstop2h 13m
Wed 9/919:24 -
Nonstop2h 15m
Deal found 14/8£125
Fri 11/920:53 -
Nonstop2h 17m
Tue 15/919:24 -
Nonstop2h 15m
Deal found 16/8£122
Fri 11/914:15 -
Nonstop2h 15m
Fri 18/907:15 -
Nonstop2h 19m
Deal found 13/8£134
Wed 16/913:45 -
Nonstop2h 13m
Mon 21/920:15 -
1 stop14h 07m
Deal found 13/8£126
Thu 17/906:23 -
Nonstop2h 17m
Mon 21/921:30 -
Nonstop2h 21m
Deal found 17/8£131
Thu 17/906:00 -
2 stops7h 25m
Tue 22/911:40 -
1 stop6h 40m
Deal found 17/8£134
Fri 25/918:35 -
Nonstop2h 26m
Mon 28/909:05 -
Nonstop2h 19m
Deal found 16/8£128
One-way flights from San Francisco to Seattle
Search for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated 17 August 2026.
Sat 12/913:55 -
Nonstop2h 19m
Deal found 13/8£65
Sat 5/917:05 -
1 stop5h 55m
Deal found 14/8£66
Tue 8/910:40 -
2 stops9h 40m
Deal found 14/8£69
Fri 18/921:07 -
Nonstop2h 19m
Deal found 14/8£71
Mon 31/814:00 -
Nonstop2h 13m
Deal found 13/8£73
Sat 5/916:10 -
Nonstop2h 19m
Deal found 15/8£74
Tue 15/909:35 -
2 stops10h 45m
Deal found 13/8£75
Fri 25/920:59 -
Nonstop2h 15m
Deal found 14/8£76
Sun 20/907:00 -
Nonstop2h 08m
Deal found 17/8£77
Mon 21/920:59 -
Nonstop2h 15m
Deal found 14/8£77
Fri 11/914:00 -
1 stop5h 35m
Deal found 17/8£78
Find flight deals from San Francisco to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 August 2026.
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, Cheapflights users made 858,174 searches. Data last updated 17 August 2026.
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
Cheapest return flight
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Fri 18/9
21:07-23:26
Nonstop2h 19m
Seattle/Tacoma Intl
Tue 22/9
15:30-17:45
Nonstop2h 15m
£128
Fastest return journey
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Sat 12/9
07:00-09:08
Nonstop2h 08m
Seattle/Tacoma Intl
Fri 18/9
15:45-18:00
Nonstop2h 15m
£128
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Wed 16/9
17:38-20:01
Nonstop2h 23m
Seattle/Tacoma Intl
Mon 21/9
21:30-23:51
Nonstop2h 21m
£129
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Tue 15/9
14:35-21:15
1 stop6h 40m
Seattle/Tacoma Intl
Tue 22/9
11:40-18:20
1 stop6h 40m
£131
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Thu 17/9
06:00-13:25
2 stops7h 25m
Seattle/Tacoma Intl
Mon 21/9
09:05-14:40
1 stop5h 35m
£134
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Tue 15/9
06:50-17:30
2 stops10h 40m
Seattle/Tacoma Intl
Thu 24/9
15:45-22:55
1 stop7h 10m
£134
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Wed 9/9
12:05-19:15
2 stops7h 10m
Seattle/Tacoma Intl
Thu 10/9
14:10-23:10
1 stop9h 00m
£134
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Tue 15/9
07:40-16:50
2 stops9h 10m
Seattle/Tacoma Intl
Wed 16/9
13:45-21:20
2 stops7h 35m
£138
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Fri 18/9
21:07-23:26
Nonstop2h 19m
Seattle/Tacoma Intl
Mon 21/9
10:55-13:15
Nonstop2h 20m
£140
San FranciscoSeattle
SFO San Francisco - SEA Seattle/Tacoma Intl
SFOSEA
San Francisco
Fri 11/9
12:30-23:00
2 stops10h 30m
Seattle/Tacoma Intl
Tue 15/9
11:40-18:20
1 stop6h 40m
£147
Flights are sorted by cheapest return flights first.
Deals found on 16/8
Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from San Francisco with our price prediction graph.
SFO-SEA
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from San Francisco to Seattle?
To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Francisco to Seattle?
Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £154). Flying from San Francisco to Seattle in July is currently the most expensive (average of £255). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to SEA?
Find hourly flight availability from San Francisco to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 August 2026.
A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle in the morning. If you’re flexible enough to do this you can expect to save up to 78% on your trip compared to booking a flight at midday.
How much does it cost for a return flight from San Francisco to Seattle?
Airfare is below average for this route at the moment.
San Francisco to Seattle flights typically cost between £159 and £290 in September.The cheapest return price found within the last 5 days was £122 on Alaska Airlines (11 Sept–15 Sept).
Weekly flight availability from San Francisco to Seattle
Explore weekly flight availability from San Francisco to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 August 2026.
The most flights from SFO to SEA are scheduled on a Sunday (98 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (37 on average).
How often are flights from San Francisco to Seattle delayed?
About 17% of weekly flights between San Francisco and Seattle have experienced delays in the past year, with the average delay time being 133 minutes.
What is the most punctual flight time for San Francisco to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to Seattle flights?
Over the past year, Delta have had the lowest number of delays on this route, with just 14% of flights being delayed.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 17 August 2026.
Check out reviews from past customers who have flown with Alaska Airlines from San Francisco to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
The flight was great. Don’t have to make it better. Everything was OK.
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airports do I use to fly from San Francisco to Seattle?
If you book a flight from San Francisco to Seattle, you will be flying from San Francisco to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from San Francisco (SFO) take 2h 15m for a nonstop flight. There are 67 flights from San Francisco to Seattle per day from 1 airline.
How popular is this San Francisco to Seattle flight route?
Flights from San Francisco to Seattle/Tacoma Intl have been viewed 19 times in the past calendar month.
How long is the flight from San Francisco to Seattle?
United Airlines, Delta, and Southwest can get you from San Francisco to Seattle in just under 2h 19m. Your travel time can differ by up to 4h 21m. Airlines will cover a distance of 679 mi. Both multi-stop and direct flights can be found to your destination and back.
What is the cheapest airline to fly from San Francisco to Seattle round-trip?
Currently priced at £109, Alaska Airlines will fly you from San Francisco to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Alaska Airlines is priced at 49% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from San Francisco to Seattle?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Seattle on time: WestJet (85%), Air China (83%), SkyWest Airlines (73%).
What are the cheapest flights from San Francisco to Seattle?
Looking at all options, your cheapest flight can be booked for £98. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for £108 on average, our data indicates £236 when flying from San Francisco to Seattle.
Can I find deals for business class flights from San Francisco to Seattle?
Yes. Cheapflights offers flight deals from San Francisco to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to Seattle?
Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £154). Flying from San Francisco to Seattle in July is currently the most expensive (average of £255). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 17 August 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 August 2026.
Discover the top airline that operate flights from San Francisco to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 August 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Francisco to Seattle?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from San Francisco today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Seattle for you. Better yet — we are completely free to use.
Can Cheapflights find flights from San Francisco to Seattle with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Seattle, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from San Francisco to Seattle become cheaper?
Of course! You can now track prices for flights from San Francisco to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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