$279 Cheap Flights from Portland (PDX) to Seattle (BFI)

View $279 flight on Sat, Nov 1, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Seattle, WA (BFI-Boeing Field)

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Cheap Flights from Portland to Seattle (PDX-BFI)

Prices were available within the past 7 days and start at $279 for one-way flights and $558 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Excursions LLC
Sat, Nov 1 - Sat, Nov 8
PDX
Portland
BFI
Seattle
$558 Roundtrip, found 1 hour ago
$558
Roundtrip
found 1 hour ago
Select Air Excursions LLC flight, departing Sat, Nov 1 from Portland to Seattle, returning Sat, Nov 8, priced at $558 found 1 hour ago
Air Excursions LLC
Fri, Nov 14 - Mon, Nov 17
PDX
Portland
BFI
Seattle
$608 Roundtrip, found 1 day ago
$608
Roundtrip
found 1 day ago
Select Air Excursions LLC flight, departing Fri, Nov 14 from Portland to Seattle, returning Mon, Nov 17, priced at $608 found 1 day ago

Alternative airports near Seattle

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

Select flight to Snohomish County - Paine Field PAE. Cheapest option available. Average driving time to city center is 29 minutes. Flights from $398
PAE
Snohomish County - Paine Field
Cheapest
Average driving time to city center29 min
Flights from $398

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI) cost?
Secure a cheap one-way flight from $279 or cheap return flight from $558 from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI)?
The cheapest month to fly from PDX to BFI is November, when demand is low. Off-peak season is generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from PDX to BFI. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI)?
Direct flights from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to BFI?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary based 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 Portland Intl. Airport (PDX) to Boeing Field Airport (BFI)?
Opt for a flight from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this have a 22% higher chance of being canceled, on average.**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 Portland Intl. Airport (PDX)?
If you've booked a direct flight from Portland Intl. Airport (PDX) 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 Portland Intl. Airport (PDX) to Boeing Field Airport (BFI) last-minute?
Booking your ticket from PDX to BFI right before your journey is generally more expensive. But if you're flexible with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a PDX to BFI flight and hotel package?
You'll typically save money by booking a PDX 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 simple to manage everything in one convenient place. After choosing your ideal flights and accommodations, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Boeing Field Airport (BFI)?
In most cases, you can cancel or modify your PDX to BFI flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further information, go to our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Boeing Field
Airlines serving
Air Excursions LLC
Roundtrip price
$558
Distance
135 mi

Book with confidence

Portland to Seattle Flights

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

 

The best time to book a flight from Portland to Seattle

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $279 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 Portland 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 Portland 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.

 

Portland to Seattle Flights

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*Available to One Key members.