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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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SEA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$261
(JetBlue)

One-way from

$141
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$512
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, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This JetBlue deal was found by Cheapflights users on 7/1. 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 9/162:17 pmPWM - SEA
1 stop10h 53mJetBlue
Mon 9/2211:40 pmSEA - PWM
1 stop10h 42mJetBlue
Deal found 7/1$261
This American Airlines deal was found by Cheapflights users on 7/2. 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 8/193:41 pmPWM - SEA
1 stop11h 00mAmerican Airlines
Sun 8/2412:46 amSEA - PWM
1 stop7h 52mAmerican Airlines
Deal found 7/2$351
This Delta deal was found by Cheapflights users on 7/3. 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.
Tue 9/235:00 pmPWM - SEA
1 stop8h 06mDelta
Mon 9/2911:40 pmSEA - PWM
2 stops10h 20mDelta
Deal found 7/3$356
This Southwest deal was found by Cheapflights users on 7/2. 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 9/45:50 amPWM - SEA
2 stops10h 20mSouthwest
Mon 9/89:20 amSEA - PWM
2 stops11h 00mSouthwest
Deal found 7/2$376
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 12/159:30 amPWM - SEA
1 stop9h 27mUnited Airlines
Mon 1/511:05 amSEA - PWM
1 stop7h 22mUnited Airlines
Deal found 7/2$419
This Sun Country Air deal was found by Cheapflights users on 7/3. 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.
Mon 8/1812:46 pmPWM - SEA
1 stop13h 04mSun Country Air
Sun 8/3111:55 pmSEA - PWM
1 stop8h 45mSun Country Air
Deal found 7/3$420

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 July 3, 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

Tue 9/16

2:17 pm-10:10 pm

1 stop10h 53m

Seattle/Tacoma Intl

Mon 9/22

11:40 pm-1:22 pm

1 stop10h 42m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 8/19

3:41 pm-11:41 pm

1 stop11h 00m

Seattle/Tacoma Intl

Sun 8/24

12:46 am-11:38 am

1 stop7h 52m

$351

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/23

5:00 pm-10:06 pm

1 stop8h 06m

Seattle/Tacoma Intl

Mon 9/29

11:40 pm-1:00 pm

2 stops10h 20m

$356

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 9/4

5:50 am-1:10 pm

2 stops10h 20m

Seattle/Tacoma Intl

Mon 9/8

9:20 am-11:20 pm

2 stops11h 00m

$376

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mon 12/15

9:30 am-3:57 pm

1 stop9h 27m

Seattle/Tacoma Intl

Mon 1/5

11:05 am-9:27 pm

1 stop7h 22m

$419

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Mon 8/18

12:46 pm-10:50 pm

1 stop13h 04m

Seattle/Tacoma Intl

Sun 8/31

11:55 pm-11:40 am

1 stop8h 45m

$420

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 8/22

2:19 pm-7:58 pm

1 stop8h 39m

$141

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/2

4:10 pm-10:26 pm

1 stop9h 16m

$176

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 8/15

7:15 pm-12:56 am

1 stop8h 41m

$203

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 8/22

5:00 pm-11:54 pm

2 stops9h 54m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 13 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 27, 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 $390). 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 July 3, 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 July 3, 2025.
See what other customers who have flown with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,916 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 $261, 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 Delta - these airlines can fly you to your destination from $351 and $356, respectively. JetBlue 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 JetBlue, with whom users have recently found tickets for as low as $141. However, be on the lookout for offers from American Airlines and United 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 $390). 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
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

Browse thousands of different options on Cheapflights for your next trip

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$240Average$311FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$287Average$514FlexibilityNo cancel feeOn-time71%
DeltaCheapest$307Average$499FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$318Average$757FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$336Average$551FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$365Average$470FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$397Average$542FlexibilityNo cancel feeOn-time63%

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