$633 Cheap Flights from Pasco (PSC) to Seattle (BFI)

View $633 flight on Fri, Aug 22, 2025Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Seattle, WA (BFI-Boeing Field)

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Cheap Flights from Pasco to Seattle (PSC-BFI)

Prices were available within the past 7 days and start at $633 for one-way flights and $1,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Sep 1 - Tue, Sep 2
PSC
Pasco
BFI
Seattle
$1,100 Roundtrip, found 2 days ago
$1,100
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Sep 1 from Pasco to Seattle, returning Tue, Sep 2, priced at $1,100 found 2 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 $227
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $227
Select flight to Snohomish County - Paine Field PAE. Average driving time to city center is 29 minutes. Flights from $742
PAE
Snohomish County - Paine Field
Average driving time to city center29 min
Flights from $742
Flights from Pasco (PSC) to Seattle (BFI)
Origin airport
Tri-Cities
Destination airport
Boeing Field
Roundtrip price
$1,100
Distance
174 mi

Pasco to Seattle Flights

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

 

The best time to book a flight from Pasco to Seattle

Sunday is one of the best days to book for cheap flights from Pasco 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 Pasco 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 Pasco to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $633 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 Pasco 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 Pasco 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 Tri-Cities Airport (PSC) to Boeing Field Airport (BFI) cost?
Lock in a cheap one-way flight from $633 or cheap return flight from $1,100 from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI)?
The cheapest month to fly from PSC to BFI is September, when there's less demand. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PSC to BFI flight.
How many flights per day from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI)?
Nonstop flights from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSC to BFI?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI)?
To avoid potential delays on the Tri-Cities Airport (PSC) to Boeing Field Airport (BFI) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of being 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 Tri-Cities Airport (PSC)?
If you're traveling on a direct flight from Tri-Cities Airport (PSC) to Seattle, Seattle - Tacoma Intl. Airport (SEA) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI) last-minute?
Holding off until just before your trip to book your flight from PSC to BFI often results in higher prices. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel schedule open to maximize your chances of getting a bargain.
Is it cheaper to book a PSC to BFI flight and hotel package?
You can save money by booking a PSC to BFI 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 convenient place. Once you've chosen your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Boeing Field Airport (BFI)?
Typically, you can cancel or reschedule your PSC to BFI flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you need more information, head to our Customer Service portal.

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*Available to One Key members.