$69 Cheap Flights from San Francisco (SFO) to Seattle (SEA)

View $69 flight on Tue, Jun 17, 2025Opens in a new window

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Find available prices by choosing your travel dates.

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

Prices were available within the past 7 days and start at $69 for one-way flights and $131 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jun 10 - Tue, Jun 10
SFO
San Francisco
SEA
Seattle
$131 Roundtrip, just found
$131
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Jun 10 from San Francisco to Seattle, returning Tue, Jun 10, priced at $131 just found
Alaska Airlines
Wed, May 14 - Wed, May 14
SFO
San Francisco
PAE
Seattle
$131 Roundtrip, found 4 days ago
$131
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, May 14 from San Francisco to Seattle, returning Wed, May 14, priced at $131 found 4 days ago
Hawaiian Airlines
Tue, May 20 - Tue, Jun 3
SFO
San Francisco
PAE
Seattle
$137 Roundtrip, found 17 hours ago
$137
Roundtrip
found 17 hours ago
Select Hawaiian Airlines flight, departing Tue, May 20 from San Francisco to Seattle, returning Tue, Jun 3, priced at $137 found 17 hours ago
United
Tue, Jun 3 - Wed, Jun 11
SFO
San Francisco
SEA
Seattle
$137 Roundtrip, just found
$137
Roundtrip
just found
Select United flight, departing Tue, Jun 3 from San Francisco to Seattle, returning Wed, Jun 11, priced at $137 just found
Delta
Tue, Jun 3 - Wed, Jun 11
SFO
San Francisco
SEA
Seattle
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Delta flight, departing Tue, Jun 3 from San Francisco to Seattle, returning Wed, Jun 11, priced at $137 just found
Alaska Airlines
Tue, Jun 3 - Wed, Jun 11
SFO
San Francisco
SEA
Seattle
$139 Roundtrip, just found
$139
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Jun 3 from San Francisco to Seattle, returning Wed, Jun 11, priced at $139 just found
United
Tue, May 20 - Sat, May 24
SFO
San Francisco
SEA
Seattle
$141 Roundtrip, found 8 hours ago
$141
Roundtrip
found 8 hours ago
Select United flight, departing Tue, May 20 from San Francisco to Seattle, returning Sat, May 24, priced at $141 found 8 hours ago
Alaska Airlines
Tue, Jun 10 - Tue, Jun 10
SFO
San Francisco
PAE
Seattle
$141 Roundtrip, just found
$141
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Jun 10 from San Francisco to Seattle, returning Tue, Jun 10, priced at $141 just found
Southwest Airlines
Tue, Jun 10 - Tue, Jun 17
SFO
San Francisco
SEA
Seattle
$142 Roundtrip, found 2 hours ago
$142
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Tue, Jun 10 from San Francisco to Seattle, returning Tue, Jun 17, priced at $142 found 2 hours ago
Bargain Flight
Mon, May 19 - Tue, May 20
SFO
San Francisco
SEA
Seattle
$147 Roundtrip, found 17 hours ago
$147
Roundtrip
found 17 hours ago
Select Bargain Flight flight, departing Mon, May 19 from San Francisco to Seattle, returning Tue, May 20, priced at $147 found 17 hours ago
Flights from San Francisco (SFO) to Seattle (SEA)
Origin airport
San Francisco Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$131
Distance
679 mi

San Francisco to Seattle Flights

The cheapest times to fly from San Francisco to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Seattle are during the month of June. You can find some of the cheapest flights from San Francisco to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Francisco to Seattle

Sunday is one of the best days to book for cheap flights from San Francisco to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from San Francisco to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $69 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) cost?
Cheap round-trip flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) start at $131. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SFO on May 17 2025 and touching down at SEA. The price was last updated on April 22 2025 and has not changed since.
What is the cheapest month to fly from SFO to SEA?
The cheapest flights from SFO to SEA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
Skip the stopovers and fly direct to Seattle - Tacoma Intl. Airport (SEA) from San Francisco Intl. Airport (SFO) with 3 carriers, including:

  • Alaska Airlines
  • United Airlines
  • Delta Air Lines

What is the cheapest airline that flies from SFO to SEA?
Jet off from SFO to SEA with Alaska Airlines. This carrier currently offers the lowest one-way fare on this route, starting at $69. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SFO on May 10 2025. Prices were last updated on April 22 2025 and have not changed since.
How many flights per day from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
When flying out of San Francisco Intl. Airport (SFO), you’ll have your pick from an average of 17 daily nonstop flights to Seattle - Tacoma Intl. Airport (SEA).
What are the most popular departure times for flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
The 9 AM departures from SFO to SEA are typically the busiest. Greater demand means you’ll likely pay more for these departures. If you want to save money, pick a less crowded time to fly.
What day of the week has the most flights from SFO to SEA?
Sunday offers the most flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA). Consider jetting off on this day and you’ll have the best chance of finding a departure that works with your plans.
What is the earliest flight from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
Hop on the earliest flight at around 6:00AM UTC-8, leaving from San Francisco Intl. Airport (SFO). You’ll be traveling for about 2h 19m, touching down at Seattle - Tacoma Intl. Airport (SEA) at approximately 8:19AM UTC-8.
How long does it take to fly from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
Typically, it takes 2 hours and 21 minutes to travel the 680 mi from SFO to SEA.
What airline has the least delays from SFO to SEA?
With 100% of journeys typically arriving on time, Aeromexico has the best on-time performance for direct flights from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA). To keep track of your flight status and get notified about any changes, head to the Expedia App.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
Opt for a flight from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Seattle from San Francisco Intl. Airport (SFO)?
Catch a direct flight from San Francisco Intl. Airport (SFO) to Seattle and land at Seattle - Tacoma Intl. Airport (SEA). Another convenient entry point into the city is Snohomish County - Paine Field Airport (PAE).
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Booking your ticket from SFO to SEA right before your journey is usually more expensive. However, if you’re flexible with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a SFO to SEA flight and hotel package?
You can save money by securing a SFO to SEA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one place. After selecting your ideal accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
It’s generally possible to reschedule or cancel your SFO to SEA flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find further details on our Customer Service portal.

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*Available to One Key members.