Cheap flights from San Francisco to Seattle from £44
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 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
7 Feb — 14 Feb1
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 January or February, booked 90 days in advance, depart on a Thursday or Tuesday and return on a Thursday
Cheap 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 8 January 2026.
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 8 January 2026.
Tue 27/118:49SFO - SEA
1 stop5h 20mDelta
Mon 2/209:55SEA - SFO
1 stop7h 52mDelta
Deal found 6/1£87
Thu 29/108:25SFO - SEA
1 stop6h 29mDelta
Mon 2/214:02SEA - SFO
1 stop6h 27mDelta
Deal found 6/1£87
Tue 27/110:30SFO - SEA
1 stop23h 23mAlaska Airlines
Fri 30/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 7/1£89
Tue 27/105:30SFO - SEA
1 stop6h 50mSouthwest
Tue 27/113:20SEA - SFO
1 stop8h 30mSouthwest
Deal found 5/1£90
Sat 7/212:00SFO - SEA
Nonstop2h 18mAlaska Airlines
Sat 7/216:43SEA - SFO
1 stop5h 12mAlaska Airlines
Deal found 6/1£90
Sat 14/220:47SFO - SEA
Nonstop2h 20mAlaska Airlines
Tue 17/220:20SEA - SFO
1 stop12h 26mAlaska Airlines
Deal found 6/1£91
Wed 1/421:07SFO - SEA
1 stop11h 44mAlaska Airlines
Tue 7/417:55SEA - SFO
Nonstop2h 16mAlaska Airlines
Deal found 6/1£92
Tue 27/111:10SFO - SEA
2 stops10h 40mSouthwest
Wed 28/109:55SEA - SFO
1 stop7h 10mSouthwest
Deal found 7/1£93
Mon 30/313:05SFO - SEA
1 stop6h 54mDelta
Sun 19/407:15SEA - SFO
Nonstop2h 22mDelta
Deal found 6/1£94
Thu 29/114:58SFO - SEA
1 stop3h 45mAlaska Airlines
Thu 29/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 6/1£95
Wed 4/219:55SFO - SEA
1 stop13h 58mAlaska Airlines
Wed 18/221:22SEA - SFO
1 stop11h 24mAlaska Airlines
Deal found 5/1£96
Tue 27/117:00SFO - SEA
1 stop16h 53mAlaska Airlines
Thu 29/113:36SEA - SFO
Nonstop2h 14mAlaska Airlines
Deal found 6/1£96
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 8 January 2026.
Thu 29/108:25SFO - SEA
1 stop6h 29mDelta
Mon 2/217:40SEA - SFO
1 stop5h 14mDelta
Deal found 7/1£87
Thu 19/206:30SFO - SEA
Nonstop2h 17mAlaska Airlines
Sat 21/219:41SEA - SFO
Nonstop2h 14mAlaska Airlines
Deal found 6/1£87
Tue 10/313:35SFO - SEA
1 stop6h 00mSouthwest
Tue 17/309:00SEA - SFO
1 stop6h 15mSouthwest
Deal found 7/1£90
Sat 7/206:00SFO - SEA
Nonstop2h 22mDelta
Sun 8/216:45SEA - SFO
Nonstop2h 15mDelta
Deal found 6/1£87
Wed 11/210:30SFO - SEA
Nonstop2h 23mDelta
Tue 17/220:30SEA - SFO
Nonstop2h 11mDelta
Deal found 6/1£87
Mon 2/213:20SFO - SEA
1 stop5h 09mDelta
Mon 9/207:15SEA - SFO
1 stop7h 53mDelta
Deal found 6/1£87
Sun 15/205:55SFO - SEA
Nonstop2h 18mDelta
Tue 17/220:30SEA - SFO
Nonstop2h 11mDelta
Deal found 6/1£87
Sat 14/306:05SFO - SEA
Nonstop2h 14mDelta
Mon 16/321:45SEA - SFO
Nonstop2h 12mDelta
Deal found 6/1£87
Mon 16/205:55SFO - SEA
Nonstop2h 18mDelta
Wed 18/220:30SEA - SFO
Nonstop2h 11mDelta
Deal found 6/1£87
Mon 16/205:55SFO - SEA
Nonstop2h 18mDelta
Sat 21/207:10SEA - SFO
Nonstop2h 20mDelta
Deal found 6/1£87
Thu 19/210:20SFO - SEA
Nonstop2h 18mDelta
Sat 21/220:30SEA - SFO
Nonstop2h 11mDelta
Deal found 6/1£87
Sat 7/309:50SFO - SEA
1 stop6h 58mDelta
Wed 11/313:30SEA - SFO
1 stop4h 49mDelta
Deal found 7/1£87
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 8 January 2026.
Tue 27/109:00SFO - SEA
Nonstop2h 21mAlaska Airlines
Fri 30/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 7/1£87
Thu 19/206:30SFO - SEA
Nonstop2h 17mAlaska Airlines
Sun 22/208:15SEA - SFO
Nonstop2h 22mAlaska Airlines
Deal found 8/1£92
Sat 14/218:44SFO - SEA
Nonstop2h 17mUnited Airlines
Tue 17/207:15SEA - SFO
Nonstop2h 19mUnited Airlines
Deal found 8/1£93
Sat 14/220:47SFO - SEA
Nonstop2h 20mAlaska Airlines
Sun 15/221:41SEA - SFO
Nonstop2h 18mAlaska Airlines
Deal found 8/1£94
Sun 25/106:00SFO - SEA
Nonstop2h 18mAlaska Airlines
Wed 4/217:59SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 6/1£99
Thu 29/114:35SFO - SEA
Nonstop2h 19mDelta
Mon 2/221:20SEA - SFO
Nonstop2h 10mDelta
Deal found 7/1£100
Sun 25/107:00SFO - SEA
Nonstop2h 18mAlaska Airlines
Fri 30/117:59SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 7/1£102
Fri 24/420:58SFO - SEA
Nonstop2h 32mUnited Airlines
Sun 26/407:12SEA - SFO
Nonstop2h 18mUnited Airlines
Deal found 7/1£103
Wed 11/213:25SFO - SEA
Nonstop2h 19mUnited Airlines
Sat 14/205:05SEA - SFO
Nonstop2h 33mUnited Airlines
Deal found 6/1£106
Mon 30/308:15SFO - SEA
Nonstop2h 24mUnited Airlines
Thu 2/408:42SEA - SFO
Nonstop2h 19mUnited Airlines
Deal found 6/1£107
Thu 9/406:30SFO - SEA
Nonstop2h 17mAlaska Airlines
Sat 18/407:03SEA - SFO
Nonstop2h 17mAlaska Airlines
Deal found 6/1£109
Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated 8 January 2026 and is based on user searches.
Tue 27/110:30SFO - SEA
1 stop23h 23mAlaska Airlines
Fri 30/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 7/1£89
Tue 27/105:30SFO - SEA
1 stop6h 50mSouthwest
Tue 27/113:20SEA - SFO
1 stop8h 30mSouthwest
Deal found 5/1£90
Tue 27/111:10SFO - SEA
2 stops10h 40mSouthwest
Wed 28/109:55SEA - SFO
1 stop7h 10mSouthwest
Deal found 7/1£93
Thu 29/105:55SFO - SEA
1 stop7h 02mDelta
Mon 2/209:55SEA - SFO
1 stop5h 13mDelta
Deal found 7/1£87
Thu 29/114:58SFO - SEA
1 stop3h 45mAlaska Airlines
Thu 29/120:50SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 6/1£95
Wed 4/219:55SFO - SEA
1 stop13h 58mAlaska Airlines
Wed 18/221:22SEA - SFO
1 stop11h 24mAlaska Airlines
Deal found 5/1£96
Sat 7/212:00SFO - SEA
Nonstop2h 18mAlaska Airlines
Sat 7/216:43SEA - SFO
1 stop5h 12mAlaska Airlines
Deal found 6/1£90
Sat 14/220:47SFO - SEA
Nonstop2h 20mAlaska Airlines
Wed 18/221:22SEA - SFO
1 stop11h 24mAlaska Airlines
Deal found 6/1£91
Sat 14/218:44SFO - SEA
Nonstop2h 17mUnited Airlines
Tue 17/207:15SEA - SFO
Nonstop2h 19mUnited Airlines
Deal found 8/1£93
Sat 14/220:47SFO - SEA
Nonstop2h 20mAlaska Airlines
Sun 15/221:41SEA - SFO
Nonstop2h 18mAlaska Airlines
Deal found 8/1£94
Thu 19/206:30SFO - SEA
Nonstop2h 17mAlaska Airlines
Sun 22/208:15SEA - SFO
Nonstop2h 22mAlaska Airlines
Deal found 8/1£92
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 8 January 2026.
Fri 30/105:55SFO - SEA
1 stop7h 02mDelta
Deal found 8/1£44
Wed 4/215:00SFO - SEA
1 stop7h 35mSouthwest
Deal found 6/1£45
Wed 4/208:24SFO - SEA
1 stop6h 33mAlaska Airlines
Deal found 7/1£48
Wed 21/109:44SFO - SEA
1 stop23h 52mFrontier
Deal found 6/1£50
Sun 17/506:05SFO - SEA
Nonstop2h 20mDelta
Deal found 8/1£51
Thu 12/306:00SFO - SEA
1 stop8h 00mSouthwest
Deal found 8/1£53
Sun 8/205:30SFO - SEA
1 stop6h 50mSouthwest
Deal found 7/1£56
Wed 6/507:00SFO - SEA
1 stop25h 50mAlaska Airlines
Deal found 8/1£57
Thu 5/209:00SFO - SEA
Nonstop2h 21mAlaska Airlines
Deal found 7/1£58
Fri 30/106:00SFO - SEA
1 stop7h 49mAmerican Airlines
Deal found 7/1£59
Cheapflights Fare Finder
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 8 January 2026.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.
Fly from
San Francisco
Fly to
Seattle
Route
Depart
Return
Price
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Thu 29/1
08:25-14:54
1 stop6h 29m
Seattle/Tacoma Intl
Mon 2/2
17:40-22:54
1 stop5h 14m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Thu 19/2
06:30-08:47
Nonstop2h 17m
Seattle/Tacoma Intl
Sat 21/2
19:41-21:55
Nonstop2h 14m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Sat 7/2
06:00-08:22
Nonstop2h 22m
Seattle/Tacoma Intl
Sun 8/2
16:45-19:00
Nonstop2h 15m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Wed 11/2
10:30-12:53
Nonstop2h 23m
Seattle/Tacoma Intl
Tue 17/2
20:30-22:41
Nonstop2h 11m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Mon 2/2
13:20-18:29
1 stop5h 09m
Seattle/Tacoma Intl
Mon 9/2
07:15-15:08
1 stop7h 53m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Sun 15/2
05:55-08:13
Nonstop2h 18m
Seattle/Tacoma Intl
Tue 17/2
20:30-22:41
Nonstop2h 11m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Sat 14/3
06:05-08:19
Nonstop2h 14m
Seattle/Tacoma Intl
Mon 16/3
21:45-23:57
Nonstop2h 12m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Mon 16/2
05:55-08:13
Nonstop2h 18m
Seattle/Tacoma Intl
Wed 18/2
20:30-22:41
Nonstop2h 11m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Mon 16/2
05:55-08:13
Nonstop2h 18m
Seattle/Tacoma Intl
Sat 21/2
07:10-09:30
Nonstop2h 20m
£87
San FranciscoSeattle
SFO - SEA
SFOSEA
San Francisco
Thu 19/2
10:20-12:38
Nonstop2h 18m
Seattle/Tacoma Intl
Sat 21/2
20:30-22:41
Nonstop2h 11m
£87
Flights are sorted by cheapest return flights first.
Deals found on 7/1
Showing 1-10 of 22 results
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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.
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?
Use this chart to determine the optimal time to book a return flight from San Francisco to Seattle. Price data was last updated on 2 January 2026.
To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 64 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £61). Flying from San Francisco to Seattle in May is currently the most expensive (average of £102). 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 8 January 2026.
A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle at midday. If you’re flexible enough to do this you can expect to save up to 85% on your trip compared to booking a flight in the evening.
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 8 January 2026.
The most flights from SFO to SEA are scheduled on a Wednesday (82 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (33 on average).
How often are flights from San Francisco to Seattle delayed?
About 15% of weekly flights between San Francisco and Seattle have experienced delays in the past year, with the average delay time being 132 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 evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday 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 10% 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 8 January 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 17m for a nonstop flight. There are 44 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 11 times in the past calendar month.
How long is the flight from San Francisco to Seattle?
Delta can get you from San Francisco to Seattle in just under 2h 16m. Your travel time will be generally consistent. Airlines will cover a distance of 679 mi. Generally, flights for this route are direct.
What is the cheapest airline to fly from San Francisco to Seattle round-trip?
Currently priced at £116, 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 36% 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: Horizon Air (100%), ITA Airways (86%), Aeromexico (85%).
What are the cheapest flights from San Francisco to Seattle?
Looking at all options, your cheapest flight can be booked for £88. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for £80 on average, our data indicates £232 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £61). Flying from San Francisco to Seattle in May is currently the most expensive (average of £102). 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 8 January 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 January 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 8 January 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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