$393 Cheap Flights from San Diego (SAN) to Seattle (BFI)

View $393 flight on Wed, Nov 12, 2025Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to Seattle, WA (BFI-Boeing Field)

Cheap Flights from San Diego to Seattle (SAN-BFI)

Prices were available within the past 7 days and start at $393 for one-way flights and $925 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sun, Dec 21 - Sat, Dec 27
SAN
San Diego
BFI
Seattle
$925 Roundtrip, found 5 days ago
$925
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sun, Dec 21 from San Diego to Seattle, returning Sat, Dec 27, priced at $925 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$998 Roundtrip, found 5 days ago
$998
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $998 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$1,005 Roundtrip, found 5 days ago
$1,005
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $1,005 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$1,008 Roundtrip, found 5 days ago
$1,008
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $1,008 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$1,013 Roundtrip, found 5 days ago
$1,013
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $1,013 found 5 days ago
Alaska Airlines
Sun, Dec 21 - Sat, Dec 27
SAN
San Diego
BFI
Seattle
$1,035 Roundtrip, found 5 days ago
$1,035
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sun, Dec 21 from San Diego to Seattle, returning Sat, Dec 27, priced at $1,035 found 5 days ago
Alaska Airlines
Sun, Dec 21 - Sat, Dec 27
SAN
San Diego
BFI
Seattle
$1,045 Roundtrip, found 5 days ago
$1,045
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sun, Dec 21 from San Diego to Seattle, returning Sat, Dec 27, priced at $1,045 found 5 days ago
Alaska Airlines
Sun, Dec 21 - Sat, Dec 27
SAN
San Diego
BFI
Seattle
$1,050 Roundtrip, found 5 days ago
$1,050
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sun, Dec 21 from San Diego to Seattle, returning Sat, Dec 27, priced at $1,050 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$1,073 Roundtrip, found 5 days ago
$1,073
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $1,073 found 5 days ago
Alaska Airlines
Fri, Oct 31 - Fri, Nov 7
SAN
San Diego
BFI
Seattle
$1,084 Roundtrip, found 5 days ago
$1,084
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 31 from San Diego to Seattle, returning Fri, Nov 7, priced at $1,084 found 5 days 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 center is 20 minutes. Flights from $150
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $150
Select flight to Snohomish County - Paine Field PAE. Average driving time to city center is 29 minutes. Flights from $328
PAE
Snohomish County - Paine Field
Average driving time to city center29 min
Flights from $328

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) cost?
Get a cheap one-way flight from $393 or cheap return flight from $925 from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI)?
The cheapest month to fly from SAN to BFI is December, when demand is low. Off-peak months are usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from SAN to BFI. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI)?
Direct flights from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SAN to BFI?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI)?
To avoid possible delays on the San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) route, travel before 3 PM. Flights after this time are 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 Diego Intl. Airport (SAN)?
Hop on a direct flight from San Diego Intl. Airport (SAN) to Seattle and arrive at Seattle - Tacoma Intl. Airport (SEA). Another arrival point to the city is Snohomish County - Paine Field Airport (PAE).
Is it cheaper to buy a plane ticket from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) last-minute?
Holding off until just before your departure to book a flight from SAN to BFI generally means paying more. While you might find some last-minute offers, there's no guarantee. Be flexible with your itinerary for a better chance of landing a bargain.
Is it cheaper to book a SAN to BFI flight and hotel package?
Compared with arranging hotels and flights separately, booking a SAN to BFI flight and hotel package with Expedia could result in significant savings. What's more, having everything in one convenient place will take the hassle out of planning your trip. Simply pick your flights and select from our extensive range of hotels, then personalize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI)?
In most instances, you're able to cancel or reschedule your SAN to BFI flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Origin airport
San Diego Intl.
Destination airport
Boeing Field
Roundtrip price
$925
Distance
1057 mi

Book with confidence

San Diego to Seattle Flights

The cheapest times to fly from San Diego 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 Diego to Seattle are during the month of December. You can find some of the cheapest flights from San Diego to Seattle with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Diego 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 Diego 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 Diego to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $393 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 Diego 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 Diego 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 Diego to Seattle Flights

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*Available to One Key members.