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$112+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$248
(American Airlines)

One-way from

$112
(Southwest)

Popular in

December

Cheapest in

January

Average price

$412
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. 1% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/256:00 amPWM - SEA
1 stop8h 03mAmerican Airlines
Fri 10/3112:34 amSEA - PWM
1 stop7h 52mAmerican Airlines
Deal found 9/10$248
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/26:00 amPWM - SEA
1 stop9h 00mAmerican Airlines
Sun 10/512:34 amSEA - PWM
1 stop7h 54mAmerican Airlines
Deal found 9/10$278
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:45 amPWM - SEA
1 stop7h 44mDelta
Mon 10/611:55 pmSEA - PWM
1 stop7h 41mDelta
Deal found 9/9$279
This JetBlue deal was found by Cheapflights users on 9/11. 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 9/11$302
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/252:38 pmPWM - SEA
1 stop22h 40mDelta
Sat 11/16:00 amSEA - PWM
1 stop7h 03mDelta
Deal found 9/10$331
This JetBlue deal was found by Cheapflights users on 9/11. 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 9/262:17 pmPWM - SEA
1 stop11h 07mJetBlue
Tue 9/3011:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 9/11$353
This JetBlue deal was found by Cheapflights users on 9/10. 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 9/262:17 pmPWM - SEA
1 stop11h 07mJetBlue
Mon 9/2911:59 pmSEA - PWM
1 stop10h 23mJetBlue
Deal found 9/10$366

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 September 11, 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

Sat 10/25

6:00 am-11:03 am

1 stop8h 03m

Seattle/Tacoma Intl

Fri 10/31

12:34 am-11:26 am

1 stop7h 52m

$248

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 11/8

3:20 pm-9:13 pm

1 stop8h 53m

Seattle/Tacoma Intl

Wed 11/12

5:00 am-3:48 pm

1 stop7h 48m

$248

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 10/2

6:00 am-12:00 pm

1 stop9h 00m

Seattle/Tacoma Intl

Sun 10/5

12:34 am-11:28 am

1 stop7h 54m

$278

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 10/2

11:45 am-4:29 pm

1 stop7h 44m

Seattle/Tacoma Intl

Mon 10/6

11:55 pm-4:13 pm

2 stops13h 18m

$284

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

$302

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 9/26

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Tue 9/30

11:59 pm-1:22 pm

1 stop10h 23m

$353

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/30

6:14 am-11:31 am

1 stop8h 17m

Seattle/Tacoma Intl

Thu 10/2

7:00 am-5:42 pm

1 stop7h 42m

$366

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 9/26

2:17 pm-10:24 pm

1 stop11h 07m

Seattle/Tacoma Intl

Mon 9/29

11:59 pm-1:22 pm

1 stop10h 23m

$366

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 11/25

6:35 am-10:26 am

1 stop30h 51m

Seattle/Tacoma Intl

Wed 12/3

6:00 am-4:06 pm

1 stop7h 06m

$371

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 11/26

2:30 pm-10:26 am

1 stop22h 56m

Seattle/Tacoma Intl

Wed 12/3

6:00 am-4:06 pm

1 stop7h 06m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
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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 29, 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 September 11, 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 September 11, 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
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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
2,913 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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
330 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

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 American Airlines, United Airlines, and Delta fly from Portland, Maine to Seattle in about 7h 44m. The time it takes to get you to your destination can typically vary by up to 1h 09m. Airlines will cover a distance of 2481 mi. This flight may include one or multiple stops.

  • 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 Sun Country Air and Delta - these airlines can fly you to your destination from $304 and $312, respectively. JetBlue is currently priced 53% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland, Maine to Seattle one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $112. However, be on the lookout for offers from JetBlue and Delta, as they are both options that can get you from Portland, Maine to Seattle for a low price.

  • 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
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Portland to Seattle

Discover the top 6 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$240Average$291FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$304Average$460FlexibilityNo cancel feeOn-time83%
DeltaCheapest$312Average$478FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$336Average$502FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$346Average$544FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$397Average$542FlexibilityNo cancel feeOn-time63%

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