£53 Cheap Flights from Seattle (SEA) to San Francisco (SFO)

View £53 flight on Wed, 27 May 2026Opens in a new window

Flight 1

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at £53 for one-way flights and £117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 11 Aug - Wed, 12 Aug
SEA
Seattle
SFO
San Francisco
£117 Return, found 1 day ago
£117
Return
found 1 day ago
Select Delta flight, departing Tue, 11 Aug from Seattle to San Francisco, returning Wed, 12 Aug, priced at £117 found 1 day ago
Alaska Airlines
Sat, 23 May - Thu, 28 May
SEA
Seattle
SFO
San Francisco
£136 Return, found 3 days ago
£136
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to San Francisco, returning Thu, 28 May, priced at £136 found 3 days ago
Alaska Airlines
Sat, 23 May - Thu, 28 May
SEA
Seattle
SFO
San Francisco
£144 Return, found 3 days ago
£144
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to San Francisco, returning Thu, 28 May, priced at £144 found 3 days ago
Alaska Airlines
Wed, 20 May - Sat, 23 May
SEA
Seattle
SFO
San Francisco
£145 Return, found 1 day ago
£145
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Seattle to San Francisco, returning Sat, 23 May, priced at £145 found 1 day ago
Alaska Airlines
Sat, 23 May - Thu, 28 May
SEA
Seattle
SFO
San Francisco
£153 Return, found 3 days ago
£153
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to San Francisco, returning Thu, 28 May, priced at £153 found 3 days ago
Alaska Airlines
Sat, 15 Aug - Tue, 1 Sept
SEA
Seattle
SFO
San Francisco
£155 Return, found 1 day ago
£155
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 15 Aug from Seattle to San Francisco, returning Tue, 1 Sept, priced at £155 found 1 day ago
Delta
Sat, 16 May - Tue, 2 Jun
SEA
Seattle
SFO
San Francisco
£161 Return, found 2 days ago
£161
Return
found 2 days ago
Select Delta flight, departing Sat, 16 May from Seattle to San Francisco, returning Tue, 2 Jun, priced at £161 found 2 days ago
Alaska Airlines
Tue, 19 May - Mon, 1 Jun
SEA
Seattle
SFO
San Francisco
£162 Return, found 2 days ago
£162
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 19 May from Seattle to San Francisco, returning Mon, 1 Jun, priced at £162 found 2 days ago
Alaska Airlines
Sat, 30 May - Mon, 1 Jun
SEA
Seattle
SFO
San Francisco
£163 Return, found 1 day ago
£163
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 30 May from Seattle to San Francisco, returning Mon, 1 Jun, priced at £163 found 1 day ago
Alaska Airlines
Wed, 20 May - Sat, 23 May
SEA
Seattle
SFO
San Francisco
£168 Return, found 1 day ago
£168
Return
found 1 day ago
Select Alaska Airlines flight, departing Wed, 20 May from Seattle to San Francisco, returning Sat, 23 May, priced at £168 found 1 day ago
United
Mon, 25 May - Mon, 8 Jun
SEA
Seattle
SFO
San Francisco
£223 Return, found 2 days ago
£223
Return
found 2 days ago
Select United flight, departing Mon, 25 May from Seattle to San Francisco, returning Mon, 8 Jun, priced at £223 found 2 days ago
JetBlue Airways
Sat, 23 May - Thu, 28 May
SEA
Seattle
SFO
San Francisco
£488 Return, found 3 days ago
£488
Return
found 3 days ago
Select JetBlue Airways flight, departing Sat, 23 May from Seattle to San Francisco, returning Thu, 28 May, priced at £488 found 3 days ago

Alternative airports near San Francisco

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

Select flight to Norman Y. Mineta San Jose Intl. SJC. Average driving time to city centre is 50 minutes. Flights from £237
SJC
Norman Y. Mineta San Jose Intl.
Average driving time to city centre50 min
Flights from £237

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

May is typically the cheapest month to fly

From £73 - £139 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to San Francisco Intl. Airport (SFO)?
Round-trip flights from Sea-Tac Airport to SFO start from £117. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to SFO?
The majority of flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do need to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to SFO that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to San Francisco Intl. Airport (SFO) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to San Francisco Intl. Airport (SFO)?
A flight distance of just 1,100 kilometres separates SeaTac and San Francisco. Once you're up in the skies, you won't have time to do much more than read the magazine in your seat pocket.
Which airlines fly direct from SEA to San Francisco Intl. Airport (SFO)?
Many travellers like to fly with Alaska Airlines (AS) from SEA to San Francisco Airport. This leading airline offers 312 flights a month, so you can pick a flight time that's perfect for you. Like more options? Have a look at the ticket prices from United Airlines (UA). This carrier offers 152 flights a month between these airports.
Are Seattle - Tacoma Intl. Airport (SEA) to SFO flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally find a bargain, with some super cheap airfares from SEA to San Francisco Intl. Airport (SFO) showing up a few weeks before the departure date. If you'd rather book ahead, Expedia compares and updates the best flight deals frequently — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines quote prices so far in advance.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.) cost?
One-way flights typically cost between £75 and £423 and return flights often range between £222 and £670. 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.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
January is typically the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.), with average return fares of approximately £162. This is about 12% lower than the average price throughout the year. January often sees lower prices because it falls after the busy holiday travel season, when demand for flights tends to decrease. Other cheap months to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.) include February and May.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Enter SEA to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best airline to fly with from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) will differ from traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. AS offers the most daily flights from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO), which is brilliant 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best time to fly from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) is typically May. This month offers a great balance, as it's one of the cheapest months to fly, with average return flights around £162. You'll also find plenty of flight options since it's a popular time to travel. If you're looking for the absolute lowest fares, January is also a cheap month, but May gives you the added benefit of more flight availability and likely better weather for your trip.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
When flying from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO), you'll find around 15 nonstop flights per day. For even more choice, look at flights that include layovers, as there are approximately 100 connecting flights daily. Some common connection points include Los Angeles Intl. (LAX), Portland Intl. (PDX), and Denver Intl. (DEN).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) typically departs at approximately 12:05 AM local time, operated by American Airlines. This is a seasonal service active in February. An early departure like this can help maximise 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
You'll find the most flights from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) on a Friday, with around 111 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include AS, DL, and WN. Fridays offer notably more flight options compared to other days of the week, making it a great day to travel if you're looking for flexibility.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) are in the early morning, from 6am to 9am. About 25% of passengers prefer this time window. Many major carriers, including Alaska Airlines and Delta Air Lines, offer flights during this window. These early morning flights are popular because they allow you to arrive in San Francisco with plenty of time to start your day, whether for business or leisure.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Direct flights from SEA to SFO usually take about 2 hours 20 minutes, traveling roughly 679 miles. If you opt for a connecting flight, expect to add around 4 hours to your journey. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Select the "Business class" and "First class" filters when looking for SEA to SFO flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
A non-stop, one-way business class flight from Seattle - Tacoma Intl. (SEA) to San Francisco Intl. (SFO) is usually around £254 - £416. You may also be able to find a cheaper business class journey between Seattle - Tacoma Intl. (SEA) to San Francisco Intl. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco 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 San Francisco from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly directly into San Francisco Intl. (SFO) to reach San Francisco. Some flights may connect through major hubs like Oakland Intl. (OAK), McCarran Intl. (LAS), Sacramento Intl. (SMF) before reaching San Francisco. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to San Francisco, CA (SFO-San Francisco 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
Seattle - Tacoma Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, JetBlue Airways
Return price
£116
Distance
1086 km
Average flight time
2 hours 16 mins

Explore a world of travel with Expedia

*Available to Expedia members.