£149 Cheap Flights from Portland (PWM) to Seattle (SEA)

View £149 flight on Tue, 9 Jun 2026Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to Seattle-Tacoma International Airport (SEA)

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

Prices were available within the past 7 days and start at £149 for one-way flights and £394 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£394 Return, found 2 days ago
£394
Return
found 2 days ago
Select JetBlue Airways flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £394 found 2 days ago
JetBlue Airways
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£515 Return, found 2 days ago
£515
Return
found 2 days ago
Select JetBlue Airways flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £515 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£519 Return, found 2 days ago
£519
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £519 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£581 Return, found 2 days ago
£581
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £581 found 2 days ago
JetBlue Airways
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£629 Return, found 2 days ago
£629
Return
found 2 days ago
Select JetBlue Airways flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £629 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£635 Return, found 2 days ago
£635
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £635 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£698 Return, found 2 days ago
£698
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £698 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£749 Return, found 2 days ago
£749
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £749 found 2 days ago
Alaska Airlines
Wed, 24 Jun - Sun, 28 Jun
PWM
Portland
SEA
Seattle
£811 Return, found 2 days ago
£811
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 24 Jun from Portland to Seattle, returning Sun, 28 Jun, priced at £811 found 2 days ago

Frequently asked questions

How do I find cheap flights from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.), 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 time to fly from Portland, ME (PWM-Portland Intl. Jetport) 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, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 40 connecting flights per day from Portland Intl. Jetport (PWM) to Seattle - Tacoma Intl. (SEA). Some common connection points include Baltimore Washington Intl. Thurgood Marshall (BWI), O'Hare Intl. (ORD), and LaGuardia (LGA).
What is the earliest flight from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in January. An early departure like this can help you maximise 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, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Portland Intl. Jetport (PWM) to Seattle - Tacoma Intl. (SEA) on a Monday, with around 25 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, American Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, with Monday offering only slightly more options.
What are the most popular departure times for flights from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Portland Intl. Jetport (PWM) to Seattle - Tacoma Intl. (SEA) are between 12pm and 3pm. About 28% of passengers prefer this time window. Many major carriers, including Delta Air Lines and Southwest Airlines, offer flights during this window. This timing works well because it allows for a morning in Portland before your flight, and you'll arrive in Seattle in the afternoon with time to settle in.
How long does it take to fly from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying from PWM to SEA with a connection usually takes about 8 hours 50 minutes, traveling roughly 2,482 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for PWM to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 from Portland Intl. Jetport (PWM)?
If you're planning to travel to Seattle from Portland Intl. Jetport (PWM), you can fly directly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Baltimore Washington Intl. Thurgood Marshall (BWI), Washington Dulles Intl. (IAD), Ronald Reagan Washington National (DCA) 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, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Portland, ME (PWM-Portland Intl. Jetport) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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

Origin airport
Portland Intl. Jetport
Destination airport
Seattle - Tacoma Intl.
Return price
£394
Distance
3971 km

Book with confidence

Compare flights from Portland to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Portland to Seattle. Operating between them flights per day, 18 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Portland Intl. Jetport to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Portland Intl. Jetport (PWM) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Portland to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Portland Intl. Jetport to Seattle - Tacoma Intl. start at just £394 and range up to £811.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Portland and Seattle
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Portland to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Portland Intl. Jetport to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Portland to Seattle easily and book with confidence

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