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$141+ Cheap flights from Portland, ME to Seattle (PWM - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Seattle/Tacoma Intl are usually found in January or September, booked 25 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Portland to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$260
(JetBlue)

One-way from

$141
(Priceline)

Popular in

December

Cheapest in

January

Average price

$548
From Portland to Seattle/Tacoma Intl
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One-way flight from Portland to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Portland to Seattle

Cheapest flights from Portland to Seattle
Explore the most affordable flight options available from Portland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This JetBlue deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:17 pmPWM - SEA
1 stop11h 07mJetBlue
Mon 10/611:40 pmSEA - PWM
1 stop10h 42mJetBlue
Deal found 8/19$260
This JetBlue deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/172:17 pmPWM - SEA
1 stop11h 03mJetBlue
Tue 9/2311:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 8/18$261
This JetBlue deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:17 pmPWM - SEA
1 stop11h 07mJetBlue
Fri 9/1211:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 8/18$272
This JetBlue deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:17 pmPWM - SEA
1 stop11h 03mJetBlue
Mon 9/2911:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 8/20$277
This JetBlue deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/122:17 pmPWM - SEA
1 stop11h 03mJetBlue
Mon 9/1511:59 pmSEA - PWM
1 stop10h 22mJetBlue
Deal found 8/19$285
This JetBlue deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:17 pmPWM - SEA
1 stop11h 07mJetBlue
Tue 9/3011:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 8/20$293
This Priceline deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:17 pmPWM - SEA
1 stop10h 53mJetBlue
Sun 10/1911:40 pmSEA - PWM
1 stop10h 42mJetBlue
Deal found 8/18$302
This JetBlue deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:17 pmPWM - SEA
1 stop11h 03mJetBlue
Mon 9/1511:59 pmSEA - PWM
1 stop10h 22mJetBlue
Deal found 8/19$309
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:57 pmPWM - SEA
1 stop11h 32mAmerican Airlines
Wed 9/2410:11 amSEA - PWM
1 stop9h 32mAmerican Airlines
Deal found 8/18$317

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Portland to Seattle that are best for you.

Fly from

Portland

Fly to

Seattle

Route

Depart

Return

Price

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 10/2

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Mon 10/6

11:40 pm-1:22 pm

1 stop10h 42m

$260

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 9/19

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Mon 9/22

11:59 pm-1:21 pm

1 stop10h 22m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 9/11

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Sun 9/14

11:59 pm-1:22 pm

1 stop10h 23m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 9/17

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Tue 9/23

11:59 pm-1:22 pm

1 stop10h 23m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 9/17

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Mon 9/22

11:59 pm-1:21 pm

1 stop10h 22m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 9/19

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Tue 9/23

11:59 pm-1:22 pm

1 stop10h 23m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/9

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Fri 9/12

11:59 pm-1:22 pm

1 stop10h 23m

$272

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 9/25

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Tue 9/30

11:40 pm-1:22 pm

1 stop10h 42m

$272

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/23

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Mon 9/29

11:59 pm-1:22 pm

1 stop10h 23m

$272

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/16

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Tue 9/30

11:40 pm-1:22 pm

1 stop10h 42m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 21 results
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Best time to book a flight from Portland to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Seattle. Price data was last updated on August 8, 2025.

The price you pay for your flight from Portland, Maine to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland, Maine to Seattle?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Seattle (average of $238). Flying from Portland, Maine to Seattle in June is currently the most expensive (average of $388). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PWM to SEA?

Find hourly flight availability from Portland to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Portland, Maine to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight in the evening.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 20, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Portland to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.2
Good
2,916 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Sun Country Air
6.9
Okay
333 reviews
Delta
8.0
Very good
7,982 reviews

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Portland to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland, Maine to Seattle?

    Airlines like JetBlue fly from Portland, Maine to Seattle in about 11h 07m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 2481 mi.

  • What are the cheapest airlines flying from Portland, Maine to Seattle round-trip?

    Currently priced at $240, JetBlue will fly you from Portland, Maine to Seattle and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Sun Country Air - these airlines can fly you to your destination from $288 and $304, respectively. JetBlue is currently priced 53% below the average price you’ll pay for this route.

  • Can I find deals for flights from Portland to Seattle that include hotel bookings?

    Yes. In addition to deals on Portland to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Seattle.

  • Can I find deals for business class flights from Portland to Seattle?

    Yes. Cheapflights offers flight deals from Portland to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Seattle (average of $238). Flying from Portland, Maine to Seattle in June is currently the most expensive (average of $388). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Lacey
Ocean Shores
Lynnwood
Leavenworth
Renton
Olympia
Kent
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Portland to Seattle

Discover the top 7 airlines that operate flights from Portland to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$240Average$311FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$288Average$498FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$304Average$460FlexibilityNo cancel feeOn-time83%
DeltaCheapest$312Average$489FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$336Average$547FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$397Average$542FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$531Average$732FlexibilityNo cancel feeOn-time75%

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