$49 Cheap Flights from San Francisco (SFO) to Seattle (SEA)

View $49 flight on Wed, Feb 25, 2026Opens in a new window

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

Today's featured flight deals from San Francisco Intl. Airport (SFO) to Seattle-Tacoma International Airport (SEA)

Nonstop
Carry-on included
Lower price than typical

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

Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Jan 13 - Wed, Jan 14
SFO
San Francisco
SEA
Seattle
$97 Roundtrip, found 1 hour ago
$97
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Jan 13 from San Francisco to Seattle, returning Wed, Jan 14, priced at $97 found 1 hour ago
Southwest Airlines
Tue, Dec 9 - Wed, Dec 10
SFO
San Francisco
SEA
Seattle
$104 Roundtrip, found 1 hour ago
$104
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Dec 9 from San Francisco to Seattle, returning Wed, Dec 10, priced at $104 found 1 hour ago
Southwest Airlines
Tue, Jan 13 - Wed, Jan 14
SFO
San Francisco
SEA
Seattle
$106 Roundtrip, found 1 hour ago
$106
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Jan 13 from San Francisco to Seattle, returning Wed, Jan 14, priced at $106 found 1 hour ago
United
Tue, Jan 13 - Wed, Jan 14
SFO
San Francisco
SEA
Seattle
$107 Roundtrip, found 1 hour ago
$107
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Jan 13 from San Francisco to Seattle, returning Wed, Jan 14, priced at $107 found 1 hour ago
Alaska Airlines
Thu, Feb 12 - Tue, Feb 17
SFO
San Francisco
SEA
Seattle
$108 Roundtrip, found 7 hours ago
$108
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Thu, Feb 12 from San Francisco to Seattle, returning Tue, Feb 17, priced at $108 found 7 hours ago
Delta
Mon, Jan 19 - Wed, Jan 21
SFO
San Francisco
SEA
Seattle
$109 Roundtrip, found 23 hours ago
$109
Roundtrip
found 23 hours ago
Select Delta flight, departing Mon, Jan 19 from San Francisco to Seattle, returning Wed, Jan 21, priced at $109 found 23 hours ago
Southwest Airlines
Tue, Dec 9 - Wed, Dec 10
SFO
San Francisco
SEA
Seattle
$111 Roundtrip, found 1 hour ago
$111
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Dec 9 from San Francisco to Seattle, returning Wed, Dec 10, priced at $111 found 1 hour ago
United
Wed, Jan 14 - Thu, Jan 15
SFO
San Francisco
SEA
Seattle
$111 Roundtrip, found 1 hour ago
$111
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Jan 14 from San Francisco to Seattle, returning Thu, Jan 15, priced at $111 found 1 hour ago
Alaska Airlines
Wed, Jan 21 - Sat, Jan 24
SFO
San Francisco
SEA
Seattle
$114 Roundtrip, found 2 hours ago
$114
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Jan 21 from San Francisco to Seattle, returning Sat, Jan 24, priced at $114 found 2 hours ago
Frontier Airlines
Wed, Dec 3 - Thu, Dec 4
SFO
San Francisco
SEA
Seattle
$150 Roundtrip, found 1 hour ago
$150
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Dec 3 from San Francisco to Seattle, returning Thu, Dec 4, priced at $150 found 1 hour ago

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

January is typically the cheapest month to fly

From $96 - $167 per traveler.

Alternative airports near Seattle

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

Select flight to Boeing Field BFI. Cheapest option available. Average driving time to city center is 10 minutes. Flights from $785
BFI
Boeing Field
Cheapest
Average driving time to city center10 min
Flights from $785

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $49 or cheap return flight from $97 from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your getaway for January can help you save, as it's the cheapest month for flights between SFO and SEA. You'll often find the lowest fares during off-peak months.
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 San Francisco Intl. Airport (SFO) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest airline to offer flights between San Francisco Intl. Airport (SFO) and Seattle - Tacoma Intl. Airport (SEA) can vary based on when you want to travel. Delta Air Lines and United Airlines are just some of the choices offering well-priced fares. Use Expedia's filters to compare airlines in one place and find the right SFO to SEA flight that fits your budget.
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.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$97
Distance
679 mi
Average flight time
2 hours 14 mins

Book with confidence

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 January. 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 $49 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.

 

San Francisco to Seattle Flights

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*Available to One Key members.