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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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
juny 17 — juny 241
dt. 6/17
dt. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Seattle/Tacoma Intl are usually found in September or January, booked 89 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 juny 12, 2025.

Round-trip from

$285
(JetBlue)

One-way from

$141
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$538
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, 1% potential price rise
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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 June 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 juny 12, 2025.

This JetBlue deal was found by Cheapflights users on 6/10. 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.
dt. 9/232:17 pmPWM - SEA
1 stop10h 53mJetBlue
dl. 9/2911:40 pmSEA - PWM
1 stop10h 42mJetBlue
Deal found 6/10$261
This Delta deal was found by Cheapflights users on 6/10. 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.
dt. 9/234:55 pmPWM - SEA
1 stop8h 30mDelta
dg. 9/2812:40 amSEA - PWM
1 stop9h 14mDelta
Deal found 6/10$297
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 8/282:48 pmPWM - SEA
1 stop11h 07mAmerican Airlines
ds. 9/65:26 amSEA - PWM
1 stop9h 19mAmerican Airlines
Deal found 6/11$306
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 8/64:56 pmPWM - SEA
1 stop10h 03mUnited Airlines
ds. 8/1610:46 pmSEA - PWM
1 stop7h 38mUnited Airlines
Deal found 6/11$325
This Sun Country Air deal was found by Cheapflights users on 6/10. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ds. 7/191:16 pmPWM - SEA
1 stop12h 31mSun Country Air
ds. 7/2611:59 pmSEA - PWM
1 stop8h 36mSun Country Air
Deal found 6/10$360
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 8/63:40 pmPWM - SEA
2 stops10h 55mSouthwest
ds. 8/165:55 amSEA - PWM
1 stop7h 10mSouthwest
Deal found 6/11$438
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 10/22:02 pmPWM - SEA
2 stops21h 05mAlaska Airlines
dl. 10/66:50 pmSEA - PWM
2 stops25h 50mAlaska Airlines
Deal found 6/11$537
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ds. 7/191:16 pmPWM - SEA
1 stop12h 31mMultiple Airlines
ds. 7/265:30 pmSEA - PWM
3 stops23h 42mMultiple Airlines
Deal found 6/10$584

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 juny 12, 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

dj. 9/4

2:17 pm-10:10 pm

1 stop10h 53m

Seattle/Tacoma Intl

dl. 9/8

11:40 pm-1:22 pm

1 stop10h 42m

$285

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dj. 9/4

2:14 pm-10:20 pm

2 stops11h 06m

Seattle/Tacoma Intl

dl. 9/8

10:55 pm-10:09 am

1 stop8h 14m

$302

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dj. 8/28

2:48 pm-10:55 pm

1 stop11h 07m

Seattle/Tacoma Intl

ds. 9/6

5:26 am-5:45 pm

1 stop9h 19m

$306

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dj. 8/28

2:36 pm-10:05 pm

2 stops10h 29m

Seattle/Tacoma Intl

ds. 9/6

11:55 pm-10:42 am

1 stop7h 47m

$311

PortlandSeattle

PWM - SEA

PWMSEA

Portland

ds. 7/19

1:16 pm-10:47 pm

1 stop12h 31m

Seattle/Tacoma Intl

ds. 7/26

11:59 pm-11:35 am

1 stop8h 36m

$360

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dc. 8/6

3:40 pm-11:35 pm

2 stops10h 55m

Seattle/Tacoma Intl

ds. 8/16

5:55 am-4:05 pm

1 stop7h 10m

$438

PortlandSeattle

PWM - SEA

PWMSEA

Portland

ds. 7/19

1:16 pm-10:47 pm

1 stop12h 31m

Seattle/Tacoma Intl

ds. 7/26

5:30 pm-8:12 pm

3 stops23h 42m

$584

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dt. 8/19

2:20 pm-8:33 pm

1 stop9h 13m

$141

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dt. 9/2

6:30 am-2:15 pm

1 stop10h 45m

$149

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dc. 8/13

11:50 am-10:07 pm

2 stops13h 17m

$154

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 15 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 June 9, 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 58 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 $391). 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 juny 12, 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 juny 12, 2025.
To help decide which airline to fly from Portland to Seattle, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $285, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $302 and $306, respectively. JetBlue is currently priced 44% 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 JetBlue, with whom users have recently found tickets for as low as $141. However, be on the lookout for offers from American Airlines 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 July is currently the most expensive (average of $391). 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
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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 juny 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$240Average$311FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$287Average$521FlexibilityNo cancel feeOn-time71%
DeltaCheapest$298Average$498FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$318Average$757FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$336Average$563FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$365Average$470FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$397Average$542FlexibilityNo cancel feeOn-time63%

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