$70 Cheap Flights from Portland (PDX) to Seattle (SEA)

View $70 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Seattle-Tacoma International Airport (SEA)

Cheap Flights from Portland to Seattle (PDX-SEA)

Prices were available within the past 7 days and start at $70 for one-way flights and $99 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Nov 7 - Mon, Nov 10
PDX
Portland
SEA
Seattle
$99 Roundtrip, found 9 hours ago
$99
Roundtrip
found 9 hours ago
Select Delta flight, departing Fri, Nov 7 from Portland to Seattle, returning Mon, Nov 10, priced at $99 found 9 hours ago
Alaska Airlines
Sat, Nov 1 - Sat, Nov 8
PDX
Portland
SEA
Seattle
$108 Roundtrip, found 1 hour ago
$108
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Nov 1 from Portland to Seattle, returning Sat, Nov 8, priced at $108 found 1 hour ago
Hawaiian Airlines
Sat, Jan 17 - Sat, Jan 31
PDX
Portland
SEA
Seattle
$117 Roundtrip, found 5 days ago
$117
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Sat, Jan 17 from Portland to Seattle, returning Sat, Jan 31, priced at $117 found 5 days ago
Alaska Airlines
Fri, Nov 7 - Fri, Nov 14
PDX
Portland
SEA
Seattle
$118 Roundtrip, just found
$118
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Nov 7 from Portland to Seattle, returning Fri, Nov 14, priced at $118 just found
Alaska Airlines
Sat, Nov 1 - Sat, Nov 8
PDX
Portland
SEA
Seattle
$127 Roundtrip, found 1 hour ago
$127
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Nov 1 from Portland to Seattle, returning Sat, Nov 8, priced at $127 found 1 hour ago
Alaska Airlines
Fri, Nov 7 - Fri, Nov 14
PDX
Portland
SEA
Seattle
$137 Roundtrip, just found
$137
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Nov 7 from Portland to Seattle, returning Fri, Nov 14, priced at $137 just found
Delta
Sun, Jan 11 - Thu, Jan 15
PDX
Portland
SEA
Seattle
$140 Roundtrip, found 4 days ago
$140
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Jan 11 from Portland to Seattle, returning Thu, Jan 15, priced at $140 found 4 days ago
Delta
Sat, Nov 1 - Mon, Nov 3
PDX
Portland
SEA
Seattle
$141 Roundtrip, found 1 day ago
$141
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Nov 1 from Portland to Seattle, returning Mon, Nov 3, priced at $141 found 1 day ago
Southwest Airlines
Tue, Nov 4 - Wed, Nov 5
PDX
Portland
SEA
Seattle
$203 Roundtrip, found 1 day ago
$203
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Nov 4 from Portland to Seattle, returning Wed, Nov 5, priced at $203 found 1 day ago
United
Mon, Nov 17 - Tue, Nov 18
PDX
Portland
SEA
Seattle
$343 Roundtrip, found 7 hours ago
$343
Roundtrip
found 7 hours ago
Select United flight, departing Mon, Nov 17 from Portland to Seattle, returning Tue, Nov 18, priced at $343 found 7 hours ago

Find the cheapest month to fly from Portland (PDX) to Seattle (SEA)

January is typically the cheapest month to fly

From $76 - $217 per traveler.

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) cost?
Grab a cheap one-way flight from $70 or cheap return flight from $99 from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) 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 Seattle - Tacoma Intl. Airport (SEA)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between PDX and SEA. You'll usually find the lowest prices during off-peak months.
Which airlines fly direct from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
If you're departing from Portland Intl. Airport (PDX), you can catch a nonstop flight to Seattle - Tacoma Intl. Airport (SEA) with Alaska Airlines.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
While prices can change depending on when you travel, Delta Air Lines and Alaska Airlines are go-to choices for flights between Portland Intl. Airport (PDX) and Seattle - Tacoma Intl. Airport (SEA). You can also compare airlines on Expedia and use the "Sort by" filter to find the best deal for your PDX to SEA flight.
How many flights per day from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
With, on average, 19 nonstop flights that operate from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) every day, you'll be cruising above the clouds before you know it.
What are the most popular departure times for flights from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
Flights between PDX and SEA tend to be busiest at 5 AM. If you want a more relaxed trip and possibly cheaper tickets, choose a time outside the usual busy windows.
What day of the week has the most flights from PDX to SEA?
Friday offers the most flights from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA). Consider traveling on this day and you'll have the best chance of finding a departure that fits your schedule.
What is the earliest flight from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
Take the earliest flight at around 5:05AM UTC-8, departing from Portland Intl. Airport (PDX). You'll be traveling for roughly 55m, landing at Seattle - Tacoma Intl. Airport (SEA) at approximately 6:00AM UTC-8.
How long does it take to fly from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
It takes approximately 1 hour and 5 minutes to travel the 130 mi from PDX to SEA.
What airline has the least delays from PDX to SEA?
With 100% of journeys typically landing on time, China Eastern Airlines has the best on-time performance for direct flights from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA). To keep track of your flight status and get notified if anything changes, head to the Expedia App.
What is the best time to fly from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
Choose a flight from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 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 Portland Intl. Airport (PDX)?
Browse 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 Seattle - Tacoma Intl. Airport (SEA) last-minute?
Waiting until just before your trip to book a flight from PDX to SEA generally means paying more. While you may come across some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book a PDX to SEA flight and hotel package?
You can save money by booking a PDX to SEA 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 it all in one place. Once you've selected your preferred flights and accommodations, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Seattle - Tacoma Intl. Airport (SEA)?
It's usually possible to reschedule or cancel your PDX to SEA flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta, Southwest Airlines, United
Roundtrip price
$98
Distance
128 mi
Average flight time
1 hour 2 mins

Book with confidence

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 $70 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.