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$158+ Cheap flights from Seattle to Portland, ME (SEA - PWM)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PWM
Mar 26 — Apr 21
Wed 3/26
Wed 4/2
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Portland are usually found in January or February, booked 90 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Portland (PWM). 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 March 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(United Airlines)

One-way from

$158
(Booking.com)

Popular in

December

Cheapest in

January

Average price

$658
Provider with most accurate pricing for Seattle/Tacoma Intl-Portland flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Portland flights.
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From Seattle/Tacoma Intl to Portland
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One-way flight from Seattle/Tacoma Intl to Portland
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Seattle to Portland

Cheapest flights from Seattle to Portland
Explore the most affordable flight options available from Seattle to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2025.

This United Airlines deal was found by Cheapflights users on 3/20. 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 4/1110:50 amSEA - PWM
1 stop7h 45mUnited Airlines
Mon 4/144:15 pmPWM - SEA
1 stop9h 28mUnited Airlines
Deal found 3/20$337
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 4/1711:59 pmSEA - PWM
2 stops9h 06mAmerican Airlines
Thu 4/244:16 pmPWM - SEA
2 stops11h 46mAmerican Airlines
Deal found 3/20$347
This Delta deal was found by Cheapflights users on 3/21. 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 8/2311:55 pmSEA - PWM
1 stop8h 01mDelta
Sat 8/305:00 pmPWM - SEA
2 stops9h 58mDelta
Deal found 3/21$362
This Southwest deal was found by Cheapflights users on 3/21. 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.
Tue 6/109:10 pmSEA - PWM
1 stop9h 35mSouthwest
Sat 6/147:10 pmPWM - SEA
1 stop8h 00mSouthwest
Deal found 3/21$378
This Booking.com deal was found by Cheapflights users on 3/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:59 pmSEA - PWM
1 stop8h 40mSun Country Air
Mon 6/3012:16 pmPWM - SEA
1 stop13h 34mSun Country Air
Deal found 3/20$420
This Alaska Airlines deal was found by Cheapflights users on 3/21. 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.
Thu 7/107:00 amSEA - PWM
2 stops13h 59mAlaska Airlines
Sun 7/205:15 amPWM - SEA
2 stops12h 55mAlaska Airlines
Deal found 3/21$734
This Mytrip deal was found by Cheapflights users on 3/20. 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.
Thu 4/1712:30 pmSEA - PWM
2 stops20h 11mMultiple Airlines
Thu 4/245:23 pmPWM - SEA
3 stops29h 28mMultiple Airlines
Deal found 3/20$741

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Portland 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 March 21, 2025.
Use the filters below to find and compare flights from Seattle to Portland that are best for you.

Fly from

Seattle

Fly to

Portland

Route

Depart

Return

Price

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Fri 4/11

10:50 am-9:35 pm

1 stop7h 45m

Portland

Mon 4/14

4:15 pm-10:43 pm

1 stop9h 28m

$337

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 4/17

10:59 pm-12:05 pm

1 stop10h 06m

Portland

Thu 4/24

4:16 pm-9:59 pm

1 stop8h 43m

$347

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Sat 8/23

11:55 pm-10:56 am

1 stop8h 01m

Portland

Sat 8/30

5:00 pm-11:58 pm

2 stops9h 58m

$362

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 6/10

9:10 pm-9:45 am

1 stop9h 35m

Portland

Sat 6/14

7:10 pm-12:10 am

1 stop8h 00m

$378

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Wed 6/25

11:59 pm-11:39 am

1 stop8h 40m

Portland

Mon 6/30

12:16 pm-10:50 pm

1 stop13h 34m

$420

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 7/10

7:00 am-11:59 pm

2 stops13h 59m

Portland

Sun 7/20

5:15 am-3:10 pm

2 stops12h 55m

$734

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 4/17

12:30 pm-11:41 am

2 stops20h 11m

Portland

Thu 4/24

5:23 pm-7:51 pm

3 stops29h 28m

$741

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Wed 5/21

6:33 pm-11:41 am

1 stop14h 08m

$158

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Thu 3/27

11:14 pm-12:30 pm

1 stop10h 16m

$169

SeattlePortland

SEA - PWM

SEAPWM

Seattle/Tacoma Intl

Tue 5/20

12:55 pm-11:59 pm

1 stop8h 04m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 14 results
1
2

Compare providers for flights from Seattle to Portland

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 Seattle to Portland in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 Seattle-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Portland, Maine 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 Seattle-Portland, Maine 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 Seattle to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Seattle 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 Seattle to Portland

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Portland. Price data was last updated on March 14, 2025.

The best time to book flights from Seattle to Portland, Maine is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Portland, Maine (average of $296). Flying from Seattle to Portland, Maine in April is currently the most expensive (average of $445). 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 SEA to PWM?

Find hourly flight availability from Seattle to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 21, 2025.

One of the essential ways to save on airfare from Seattle to Portland, Maine is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

Rainfall in Portland by month

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

In terms of precipitation, rainfall in Portland, Maine ranges from 2.9 - 4.5 inches per month. November is typically the wettest month, when rainfall can reach 4.5 in. August is typically the driest time to visit Portland, Maine when rainfall is around 2.9 in.

Temperature in Portland by month

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

If weather is an important factor for your trip to Portland, Maine, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated March 21, 2025.
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,278 reviews
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,759 reviews
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,895 reviews
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,937 reviews
Southwest
8.1
Very good
4,278 reviews

Food

7.1

Comfort

8.1

Entertainment

7.6

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Portland. 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 Seattle to Portland, Maine round-trip?

    Our cheapest airline available from Seattle to Portland, Maine is United Airlines. Our recent data shows that you can find tickets from as low as $337 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $347 and $362 round-trip. United Airlines is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airline one-way is Sun Country Air, with whom users have recently found tickets for as low as $158. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Seattle to Portland, Maine for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Portland 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 Seattle to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Portland, Maine (average of $296). Flying from Seattle to Portland, Maine in April is currently the most expensive (average of $445). 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
North Conway
Bath
Brunswick
Auburn
Conway
Lewiston

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Seattle to Portland

Discover the top 6 airlines that operate flights from Seattle to Portland. 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 March 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$535FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$241Average$361FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$288Average$377FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$318Average$799FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$329Average$601FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$346Average$537FlexibilityNo cancel feeOn-time71%
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