£66 Cheap Flights from San Francisco (SFO) to Seattle (SEA)

View £66 flight on Wed, 16 Sept 2026Opens in a new window

Popular airlines from San Francisco International Airport (SFO) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from San Francisco (SFO) to Seattle (SEA)

Prices were available within the past 7 days and start at £66 for one-way flights and £147 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, 17 Sept - Wed, 23 Sept
SFO
San Francisco
SEA
Seattle
£147 Return, found 5 days ago
£147
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 17 Sept from San Francisco to Seattle, returning Wed, 23 Sept, priced at £147 found 5 days ago
Delta
Wed, 23 Sept - Thu, 24 Sept
SFO
San Francisco
SEA
Seattle
£148 Return, found 1 day ago
£148
Return
found 1 day ago
Select Delta flight, departing Wed, 23 Sept from San Francisco to Seattle, returning Thu, 24 Sept, priced at £148 found 1 day ago
Alaska Airlines
Wed, 24 Jun - Tue, 30 Jun
SFO
San Francisco
SEA
Seattle
£156 Return, found 5 hours ago
£156
Return
found 5 hours ago
Select Alaska Airlines flight, departing Wed, 24 Jun from San Francisco to Seattle, returning Tue, 30 Jun, priced at £156 found 5 hours ago
Alaska Airlines
Mon, 27 Jul - Wed, 29 Jul
SFO
San Francisco
SEA
Seattle
£162 Return, found 6 days ago
£162
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 27 Jul from San Francisco to Seattle, returning Wed, 29 Jul, priced at £162 found 6 days ago
Alaska Airlines
Thu, 17 Sept - Wed, 23 Sept
SFO
San Francisco
SEA
Seattle
£163 Return, found 5 days ago
£163
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 17 Sept from San Francisco to Seattle, returning Wed, 23 Sept, priced at £163 found 5 days ago
Delta
Sat, 1 Aug - Tue, 18 Aug
SFO
San Francisco
SEA
Seattle
£163 Return, found 1 day ago
£163
Return
found 1 day ago
Select Delta flight, departing Sat, 1 Aug from San Francisco to Seattle, returning Tue, 18 Aug, priced at £163 found 1 day ago
Alaska Airlines
Wed, 24 Jun - Tue, 30 Jun
SFO
San Francisco
SEA
Seattle
£167 Return, found 5 hours ago
£167
Return
found 5 hours ago
Select Alaska Airlines flight, departing Wed, 24 Jun from San Francisco to Seattle, returning Tue, 30 Jun, priced at £167 found 5 hours ago
Delta
Sat, 27 Jun - Wed, 8 Jul
SFO
San Francisco
SEA
Seattle
£174 Return, found 13 hours ago
£174
Return
found 13 hours ago
Select Delta flight, departing Sat, 27 Jun from San Francisco to Seattle, returning Wed, 8 Jul, priced at £174 found 13 hours ago
Alaska Airlines
Thu, 27 Aug - Fri, 28 Aug
SFO
San Francisco
SEA
Seattle
£180 Return, found 5 days ago
£180
Return
found 5 days ago
Select Alaska Airlines flight, departing Thu, 27 Aug from San Francisco to Seattle, returning Fri, 28 Aug, priced at £180 found 5 days ago
United
Fri, 26 Jun - Wed, 8 Jul
SFO
San Francisco
SEA
Seattle
£224 Return, found 1 day ago
£224
Return
found 1 day ago
Select United flight, departing Fri, 26 Jun from San Francisco to Seattle, returning Wed, 8 Jul, priced at £224 found 1 day ago
American Airlines
Tue, 22 Sept - Fri, 25 Sept
SFO
San Francisco
SEA
Seattle
£231 Return, found 3 days ago
£231
Return
found 3 days ago
Select American Airlines flight, departing Tue, 22 Sept from San Francisco to Seattle, returning Fri, 25 Sept, priced at £231 found 3 days ago
JetBlue Airways
Thu, 4 Jun - Mon, 8 Jun
SFO
San Francisco
SEA
Seattle
£535 Return, found 1 hour ago
£535
Return
found 1 hour ago
Select JetBlue Airways flight, departing Thu, 4 Jun from San Francisco to Seattle, returning Mon, 8 Jun, priced at £535 found 1 hour ago

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £221
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from £221

Find the cheapest month to fly from San Francisco (SFO) to Seattle (SEA)

May is typically the cheapest month to fly

From £101 - £162 per traveller.

Frequently asked questions

How much does a flight from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
One-way flights typically cost between $279 and $1,515 and return flights often range between $602 and $2,198. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average round-trip fares around 514 CAD. This is about 19% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) include February and May.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Enter SFO to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from San Francisco, CA (SFO-San Francisco Intl.) (SFO) to Seattle, WA (SEA-Seattle - Tacoma Intl.) (SEA) will differ from traveler to traveler. If you like to fly early, DL offers early morning flights. If price is the most important factor, AA typically offers the lowest fares. AS offers the most daily flights from San Francisco, CA (SFO-San Francisco Intl.) (SFO) to Seattle, WA (SEA-Seattle - Tacoma Intl.) (SEA), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) is typically May. This month offers a great balance, as it's one of the cheapest times to fly with average round-trip fares around 514 CAD, and it's also a very popular month for travel, meaning you'll have plenty of flight options. This information is based on booking data from the past year.*Prices based on flights available on Expedia in the last year.
How many flights per day from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
When flying from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), you'll find approximately 15 nonstop flights per day. For even more choice, look at flights that include layovers, as there are around 117 connecting flights daily. Some common connection points include Los Angeles Intl. (LAX), San Diego Intl. (SAN), and Harry Reid Intl. (LAS).
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from San Francisco Intl. (SFO) to Seattle - Tacoma Intl. (SEA) typically departs at approximately 12:05 AM local time, operated by F9. This is a seasonal service active in April. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from San Francisco Intl. (SFO) to Seattle - Tacoma Intl. (SEA) on a Friday, with around 106 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and Delta Air Lines. Fridays offer notably more flight options compared to other days of the week.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from San Francisco International Airport (SFO) to Seattle-Tacoma International Airport (SEA) are in the morning, between 9am and 12pm. About 23% of passengers prefer this time. Many major carriers, including Alaska Airlines and Delta Air Lines, offer flights during this window. This timing works well for many travelers as it allows for a productive morning flight and an early afternoon arrival, giving you plenty of time to settle in or start your activities in Seattle.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A nonstop flight from SFO to SEA typically takes around 2 hours 20 minutes, covering approximately 679 miles. Connecting flights on this route usually add 4 hours 40 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for SFO to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from San Francisco Intl. (SFO)?
From San Francisco Intl. (SFO), you can fly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like San Diego Intl. (SAN), Los Angeles Intl. (LAX), Bob Hope (BUR) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, United
Return price
£130
Distance
1086 km
Average flight time
2 hours 16 mins

Book with confidence

Compare flights from San Francisco to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Francisco to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Francisco Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from San Francisco Intl. (SFO) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from San Francisco to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Francisco Intl. to Seattle - Tacoma Intl. start at just £147 and range up to £535.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near San Francisco and Seattle
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your San Francisco to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Francisco Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from San Francisco to Seattle easily and book with confidence

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*Available to Expedia members.