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PWM - SEA

$118 Find cheap flights from Portland, Maine to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Seattle departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 6/3
Mon 6/10

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Seattle, as well as popular online travel agencies
In the last 7 days travelers have searched 43,693,958 times on KAYAK, and here is why:

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Cheap flight deals from Portland to Seattle (PWM-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:13 pm - 10:50 pmPWM-SEA
8h 37m1 stop
11:59 pm - 11:24 amSEA-PWM
8h 25m1 stop
$239American Airlines
Find Deal
Fri, Sep 27 - Mon, Sep 30
6:07 am - 11:20 amPWM-SEA
8h 13m1 stop
11:59 am - 10:14 pmSEA-PWM
7h 15m1 stop
$277American Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 1
2:24 pm - 10:49 pmPWM-SEA
11h 25m1 stop
11:59 pm - 1:29 pmSEA-PWM
10h 30m1 stop
$294JetBlue
Find Deal
Wed, May 29 - Sun, Jun 2
2:24 pm - 10:49 pmPWM-SEA
11h 25m1 stop
11:59 pm - 1:29 pmSEA-PWM
10h 30m1 stop
$327JetBlue
Find Deal
Wed, May 29 - Sun, Jun 2
2:40 pm - 10:18 pmPWM-SEA
10h 38m1 stop
12:30 am - 10:43 amSEA-PWM
7h 13m1 stop
$330Delta
Find Deal
Tue, Sep 24 - Mon, Sep 30
6:05 am - 4:31 pmPWM-SEA
13h 26m2 stops
12:30 am - 10:43 amSEA-PWM
7h 13m1 stop
$333Delta
Find Deal
Sun, Sep 1 - Sat, Sep 21
5:30 am - 11:43 amPWM-SEA
9h 13m1 stop
10:50 pm - 10:31 amSEA-PWM
8h 41m1 stop
$348United Airlines
Find Deal
Mon, Aug 26 - Mon, Sep 9
5:30 am - 11:43 amPWM-SEA
9h 13m1 stop
10:50 pm - 10:31 amSEA-PWM
8h 41m1 stop
$352United Airlines
Find Deal
Mon, Aug 26 - Mon, Sep 9
1:33 pm - 10:54 pmPWM-SEA
12h 21m1 stop
11:59 pm - 12:28 pmSEA-PWM
9h 29m1 stop
$385Sun Country Air
Find Deal
Thu, Jun 13 - Wed, Jun 26
1:27 pm - 10:47 pmPWM-SEA
12h 20m1 stop
11:59 pm - 12:55 pmSEA-PWM
9h 56m1 stop
$395Sun Country Air
Find Deal
Sun, Jul 21 - Wed, Jul 31

Flights from Portland to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Portland to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Portland to Seattle?

The average price of all flights from Portland, Maine to Seattle clicked on KAYAK for each day over the last 12 months.
For Portland to Seattle, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Portland, the best deals are generally found on Tuesday, with Monday being the most expensive.

What is the cheapest month to fly from Portland, Maine to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Portland, Maine to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Portland, Maine to Seattle is October, where tickets cost $439 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $843 and $787 respectively.

How far in advance should I book a flight from Portland, Maine to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Portland, Maine to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Portland, Maine to Seattle, you should book around 5 days before departure. For the absolute cheapest price, our data suggests you should book 41 days before departure.

Which airlines provide the cheapest flights from Portland to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Seattle from Portland were found on Delta ($118) and JetBlue ($121), and the lowest round-trip tickets were found on American Airlines ($239) and JetBlue ($294).

Good to know

Low season

January

High season

August

Cheapest flight

$118
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Portland to Seattle

When to book flights from Portland to Seattle

Are your dates flexible? Find out the best times to travel from Portland to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Seattle

  • What is the cheapest flight from Portland, Maine to Seattle?

    In the last 3 days, the lowest price for a flight from Portland, Maine to Seattle was $118 for a one-way ticket and $239 for a round-trip.

  • Do I need a passport to fly between Portland and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Portland to Seattle?

    Portland and Seattle are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Seattle/Tacoma Intl.

  • Which aircraft models fly most regularly from Portland to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Seattle?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Seattle, Delta or JetBlue?

    The two airlines most popular with KAYAK users for flights from Portland to Seattle are Delta and JetBlue. With an average price for the route of $592 and an overall rating of 8.0, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $387 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Portland to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Portland with another airline. Booking your flights between Portland and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Portland to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Portland to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10848 reviews
7.9Comfort
8.6Crew
8.2Boarding
7.4Food
8.0Entertainment
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

There were multiple delays but JetBlue tried to make the boarding and departure process as quick and efficient as possible. The crew was as detached from reality as could be, meaning: not very friendly and just doing things by the numbers.

I had back trouble prior to my flight and everyone was great about helping me.

40 minute delay before take off after boarding flight. Bright lights throughout night flight due Issues with light panels. In flight Entertainment nonfunctional

Everything was good except for deplaning in NY. Took way too long!!

Jet Blue keeps getting iit wrong. 4 hour mechanical delay followed by terrible boarding experience. This is my third horrific jet blue flight in 2024. I am going to try to avoid this loser in the sky

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

They were flexible and let my daughter and I sit in the back of the plane.

A flight attendant appeared to not be in a good mood that served us; felt she was being short. Overhead announcements were very loud compared to other airlines and the message was not friendly and was a little confusing. This flight was particularly over all was not satisfying compared to previous Sun Country flights.

Airlines should have to add their fees to their fares

I am upset with the hidden fees for bringing on an overhead carryon onto flight and also having to pay for my seat selection. This should all be part of the original price of the ticket. Very poor customer service

Sun country Wi-Fi was not working. Flight was overbooked by two people. Had to pay extra for carryons day before flight and I don’t like hidden fees like that.

WiFi did not work. Woman flight attendant in the rear of the plane was moody.

Flight delayed over 3 hrs due to unexplained issue. No text message to notify.

Well we did not realize at first it was a ground transfer, but we really enjoyed it and would definitely recommend to friends and family. Our driver was awesome and the ride was wonderful. A bathroom on board would have been nice, but at least we were warned that there wasn't one so we went ahead of time.

We were on a fairly long flight and they offered nothing for a snack (unless you paid) and then quickly gave you a drink and were never to be seen again. I would have loved a refill on my water but that was not an option. The flight attendants were standing on ther phone when we boarded and left and never even greeted us. Any other flight I have been on they would have welcomed us on the plane and again greeted us as we got off. Our landline transfer from MSP to Rochester on the other hand was FANTASTIC! We would highly recommend!

Took forever to get the plane loaded and unloaded. Longest I have ever had. I was in the middle of the plane and it almost took a hour after landing to get off of the plane.

Book cheap flights from Portland to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Portland to Seattle found on KAYAK in the last 72 hours.
7/2Tue
1 stopDelta
7h 48mPWM-SEA
$118
5/31Fri
1 stopJetBlue
11h 25mPWM-SEA
$121
8/26Mon
1 stopSun Country Air
21h 41mPWM-SEA
$163
8/31Sat
1 stopAmerican Airlines
9h 13mPWM-SEA
$173
6/13Thu
1 stopSun Country Air
12h 21mPWM-SEA
$174
5/24Fri
2 stops
22h 40mPWM-SEA
$202
5/24Fri
1 stopUnited Airlines
8h 44mPWM-SEA
$220
8/26Mon
2 stopsUnited Airlines
13h 32mPWM-SEA
$229
6/13Thu
2 stops
21h 59mPWM-SEA
$231
7/2Tue
2 stopsAmerican Airlines
11h 06mPWM-SEA
$284

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Last minute flights from Portland to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Portland to Seattle that are departing in the next 10 days.
5/7Tue
multi-stopAmerican Airlines
9h 09mPWM-SEA
5/14Tue
multi-stopAmerican Airlines
9h 04mSEA-PWM
$695
5/7Tue
multi-stopAmerican Airlines
9h 09mPWM-SEA
5/14Tue
multi-stopAmerican Airlines
11h 16mSEA-PWM
$700
5/7Tue
multi-stopAmerican Airlines
11h 33mPWM-SEA
5/14Tue
multi-stopAmerican Airlines
11h 16mSEA-PWM
$705
5/8Wed
multi-stopUnited Airlines
9h 50mPWM-SEA
5/22Wed
multi-stopUnited Airlines
8h 03mSEA-PWM
$707
5/8Wed
multi-stopUnited Airlines
15h 36mPWM-SEA
5/22Wed
multi-stopUnited Airlines
8h 03mSEA-PWM
$712
5/8Wed
multi-stopAmerican Airlines
13h 30mPWM-SEA
5/22Wed
multi-stopAmerican Airlines
11h 21mSEA-PWM
$739
5/7Tue
multi-stopDelta
9h 14mPWM-SEA
5/13Mon
multi-stopDelta
10h 31mSEA-PWM
$763
5/7Tue
multi-stopDelta
11h 29mPWM-SEA
5/13Mon
multi-stopDelta
10h 31mSEA-PWM
$768
5/8Wed
multi-stopAmerican Airlines
14h 24mPWM-SEA
5/21Tue
multi-stopAmerican Airlines
12h 32mSEA-PWM
$868
5/8Wed
multi-stopDelta
10h 27mPWM-SEA
5/21Tue
multi-stopDelta
10h 31mSEA-PWM
$2,045

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Portland - Seattle Flights

Departure:

Portland (PWM)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Portland

Cabin classes: