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

View AU$172 flight on Sat, 5 Sept 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 19 Aug - Wed, 26 Aug
PDX
Portland
SEA
Seattle
AU$257 Return, found 6 days ago
AU$257
Return
found 6 days ago
Select Delta flight, departing Wed, 19 Aug from Portland to Seattle, returning Wed, 26 Aug, priced at AU$257 found 6 days ago
Alaska Airlines
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$271 Return, found 1 day ago
AU$271
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$271 found 1 day ago
Alaska Airlines
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$299 Return, found 1 day ago
AU$299
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$299 found 1 day ago
Alaska Airlines
Wed, 19 Aug - Wed, 26 Aug
PDX
Portland
SEA
Seattle
AU$300 Return, found 6 days ago
AU$300
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 19 Aug from Portland to Seattle, returning Wed, 26 Aug, priced at AU$300 found 6 days ago
Alaska Airlines
Wed, 19 Aug - Wed, 26 Aug
PDX
Portland
SEA
Seattle
AU$308 Return, found 6 days ago
AU$308
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 19 Aug from Portland to Seattle, returning Wed, 26 Aug, priced at AU$308 found 6 days ago
Alaska Airlines
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$314 Return, found 1 day ago
AU$314
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$314 found 1 day ago
Alaska Airlines
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$321 Return, found 1 day ago
AU$321
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$321 found 1 day ago
Alaska Airlines
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$335 Return, found 1 day ago
AU$335
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$335 found 1 day ago
Alaska Airlines
Wed, 19 Aug - Wed, 26 Aug
PDX
Portland
SEA
Seattle
AU$337 Return, found 6 days ago
AU$337
Return
found 6 days ago
Select Alaska Airlines flight, departing Wed, 19 Aug from Portland to Seattle, returning Wed, 26 Aug, priced at AU$337 found 6 days ago
Delta
Sat, 22 Aug - Sun, 23 Aug
PDX
Portland
SEA
Seattle
AU$344 Return, found 1 day ago
AU$344
Return
found 1 day ago
Select Delta flight, departing Sat, 22 Aug from Portland to Seattle, returning Sun, 23 Aug, priced at AU$344 found 1 day ago

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

March is typically the cheapest month to fly

From AU$113 - AU$396 per traveller.

Frequently asked questions

How much does a flight from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from AU$172 and cheap return flights from AU$257 PDX to SEA with Expedia. One-way flights typically cost between AU$169 and AU$1,127. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when PDX to SEA ticket fares go up or down.
What is the cheapest month to fly from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from PDX to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 5 airlines offering direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Here are some of the top carriers:
  • Delta operates 63 direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • Starlux Airlines operates 21 direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • Condor operates 14 direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • Qatar Airways operates 14 direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • British Airways operates 7 direct flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
How do I find cheap flights from Portland, OR (PDX) to Seattle, WA (SEA)?
To find a cheap flight from Portland, OR (PDX) to Seattle, WA (SEA), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. United offers the most daily flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find approximately 9 nonstop flights per day from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choices, look at flights that include layovers, as there are around 61 connecting flights per day. Some common connection points include San Francisco Intl. (SFO), Denver Intl. (DEN), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Portland International Airport (PDX) to Seattle - Tacoma International Airport (SEA) typically departs around 12:05 AM local time. This service is operated by American Airlines and is seasonal, active in June and July. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from Portland International Airport (PDX) to Seattle - Tacoma International Airport (SEA) on Thursdays, with around 51 flights available. This offers a good selection of options for your travel plans. Major airlines on this route include Alaska Airlines, Southwest Airlines, and United. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices no matter when you decide to fly.
What are the most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the morning, between 9am and 12pm. Many major carriers, including Alaska Airlines, Delta and Southwest Airlines, offer flights during this window. Many travellers prefer this time as it allows for an early start to their day in Seattle.
How long does it take to fly from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
When flying from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), you'll find that a non-stop flight typically takes around 1 hour 18 minutes. This route covers a distance of approximately 208 kilometers. If you opt for a flight with one stop, your travel time will be significantly longer, usually around 9 hours 48 minutes. Flights with two or more stops take even longer, averaging about 14 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from Portland, OR (PDX-Portland Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between PDX and SEA.You can fly business class with Delta.First class cabins are available on Alaska Airlines, Delta, Hawaiian Airlines, United, and American Airlines.
How do I earn miles on a Portland, OR (PDX) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Portland, OR (PDX) to Seattle, WA (SEA) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle, WA (SEA) from Portland, OR (PDX)?
If you're planning to travel to Seattle from Portland Intl. (PDX), you can fly directly into Seattle - Tacoma Intl. (SEA). Some flights may connect through major hubs like Harry Reid International Airport (LAS), San Diego Intl. (SAN), or Sky Harbor Intl. (PHX) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Portland, OR (PDX) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Portland, OR (PDX) to Seattle, WA (SEA) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Portland, OR (PDX) to Seattle, WA (SEA) flight and hotel package?
Securing a Portland, OR (PDX) to Seattle, WA (SEA) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland, OR (PDX) to Seattle, WA (SEA)?
If you booked your Portland, OR (PDX) to Seattle, WA (SEA) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

0
Origin airport
Portland Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, Delta
Return price
AU$257
Distance
206 km

Book with confidence

Your quick guide to flights from Portland to Seattle

Pick up great flights from Portland to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Portland to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Portland to Seattle that take around hours.

Find cheap flights from Portland to Seattle

From the great flight deals with prices currently ranging from AU$257 to AU$344, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Portland to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in August.

Reasons to book your flight from Portland to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Portland to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Portland to Seattle

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*Available to Expedia members.