Cheap Flights from Portland (PDX) to Seattle (LKE)

Popular airlines from Portland International Airport (PDX) to Seattle, WA (LKE-Lake Union Seaplane Base)

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 $473
PAE
Snohomish County - Paine Field
Cheapest
Average driving time to city center29 min
Flights from $473
Select flight to Boeing Field BFI. Average driving time to city center is 10 minutes. Flights from $558
BFI
Boeing Field
Average driving time to city center10 min
Flights from $558

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE) cost?
Get a cheap one-way flight or cheap return flight from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE) 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 Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE)?
is the most affordable month to fly from PDX to LKE. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PDX to LKE flight.
How many flights per day from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE)?
There aren't any daily nonstop flights from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from PDX to LKE?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*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 Lake Union Seaplane Base Airport (LKE)?
To reach Lake Union Seaplane Base Airport (LKE) on schedule, select a flight that leaves Portland Intl. Airport (PDX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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)?
Explore your flight options from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA). This is the only airport in Seattle you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE) last-minute?
Waiting until right before your break to book your flight from PDX to LKE generally means paying more. While you might find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for the best chance of getting a bargain.
Is it cheaper to book a PDX to LKE flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to LKE flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Lake Union Seaplane Base Airport (LKE)?
Generally, it's possible to reschedule or cancel your PDX to LKE flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Lake Union Seaplane Base
Distance
141 mi

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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 . 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 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.