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$159+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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The best prices from Portland to Seattle/Tacoma Intl are usually found in September or January, booked 80 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 January 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$277
(United Airlines)

One-way from

$159
(Delta)

Popular in

July

Cheapest in

September

Average price

$370
Provider with most accurate pricing for Portland-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Seattle/Tacoma Intl flights.
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From Portland to Seattle/Tacoma Intl
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One-way flight from Portland to Seattle/Tacoma Intl
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High demand for flights, 9% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in January 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 January 20, 2025.

This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/213:55 pmPWM - SEA
1 stop9h 22mUnited Airlines
Wed 2/2612:25 pmSEA - PWM
1 stop7h 50mUnited Airlines
Deal found 1/20$277
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/84:46 pmPWM - SEA
1 stop9h 14mDelta
Thu 3/1310:55 pmSEA - PWM
1 stop10h 21mDelta
Deal found 1/20$388
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2112:27 pmPWM - SEA
1 stop13h 45mAmerican Airlines
Sat 10/255:02 amSEA - PWM
1 stop14h 04mAmerican Airlines
Deal found 1/20$392
This JetBlue Airways deal was found by Cheapflights users on 1/20. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/282:20 pmPWM - SEA
1 stop9h 13mJetBlue
Sat 9/610:39 pmSEA - PWM
1 stop7h 48mJetBlue
Deal found 1/20$399
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2711:40 amPWM - SEA
2 stops15h 45mSouthwest
Sun 3/168:15 pmSEA - PWM
2 stops17h 40mSouthwest
Deal found 1/19$452
This Sun Country Air deal was found by Cheapflights users on 1/19. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2112:32 pmPWM - SEA
1 stop8h 00mSun Country Air
Sun 6/296:40 pmSEA - PWM
1 stop13h 55mSun Country Air
Deal found 1/19$455
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/216:18 pmPWM - SEA
3 stops33h 07mMultiple Airlines
Wed 2/268:30 amSEA - PWM
3 stops29h 13mMultiple Airlines
Deal found 1/20$639
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2212:38 pmPWM - SEA
1 stop10h 47mAlaska Airlines
Sat 6/288:00 amSEA - PWM
2 stops12h 37mAlaska Airlines
Deal found 1/19$923

Find flights from Portland to Seattle within your budget

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 2/21

3:55 pm-10:17 pm

1 stop9h 22m

Seattle/Tacoma Intl

Wed 2/26

12:25 pm-11:15 pm

1 stop7h 50m

$277

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 3/8

4:46 pm-11:00 pm

1 stop9h 14m

Seattle/Tacoma Intl

Thu 3/13

10:55 pm-12:16 pm

1 stop10h 21m

$388

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 2/26

12:49 pm-11:23 pm

2 stops13h 34m

Seattle/Tacoma Intl

Mon 3/3

11:59 pm-1:57 pm

2 stops10h 58m

$402

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 2/27

11:40 am-12:25 am

2 stops15h 45m

Seattle/Tacoma Intl

Sun 3/16

8:15 pm-4:55 pm

2 stops17h 40m

$452

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 6/21

12:32 pm-5:32 pm

1 stop8h 00m

Seattle/Tacoma Intl

Sun 6/29

6:40 pm-11:35 am

1 stop13h 55m

$455

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 2/21

6:18 pm-12:25 am

3 stops33h 07m

Seattle/Tacoma Intl

Wed 2/26

8:30 am-4:43 pm

3 stops29h 13m

$639

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mon 6/30

2:20 pm-8:33 pm

1 stop9h 13m

Seattle/Tacoma Intl

Mon 7/7

11:25 pm-1:23 pm

1 stop10h 58m

$665

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sun 6/22

12:38 pm-8:25 pm

1 stop10h 47m

Seattle/Tacoma Intl

Sat 6/28

8:00 am-11:37 pm

2 stops12h 37m

$923

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 3/8

4:46 pm-11:00 pm

1 stop9h 14m

$159

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mon 1/27

6:18 pm-12:19 am

3 stops33h 01m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 14 results
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Compare providers for flights from Portland to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Portland to Seattle

Get recent, data-driven insights about flights from Portland to Seattle including ideal travel times, pricing trends, and more.

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 January 17, 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 80 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 July is currently the most expensive (average of $411). 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 January 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 January 20, 2025.
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,201 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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.

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

    Currently priced at $277, United Airlines will fly you from Portland, Maine to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $388 and $402, respectively. United Airlines is currently priced 49% 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 Delta, with whom users have recently found tickets for as low as $159. However, be on the lookout for offers from United Airlines and American Airlines, 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 July is currently the most expensive (average of $411). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$253Average$387FlexibilityNo cancel feeOn-time62%
DeltaCheapest$272Average$558FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$278Average$543FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$318Average$715FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$336Average$608FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$365Average$470FlexibilityNo cancel feeOn-time83%
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