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

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Flights from San Diego (SAN) to Seattle (BFI)
Origin airport
San Diego Intl.
Destination airport
Boeing Field
Distance
1057 mi

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 . 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 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.

Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to Boeing Field Airport (BFI) cost?
Discover the latest flight deals from SAN to BFI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SAN to BFI?
The cheapest flights from SAN to BFI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SAN to BFI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SAN to BFI. Sort your results by “Price (lowest to highest)” to snap up a great 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.

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