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Cheap flights from Portland, Maine to Seattle from $141

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Seattle departing on 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland, Maine to Seattle

Cheap round-trip flights

JetBlue Logo
2:17 pm - 10:20 pmPWM-SEA
11h 03m1 stop
JetBlue Logo
11:59 pm - 1:22 pmSEA-PWM
10h 23m1 stop
$261JetBlue
Find Deal
Wed, Sep 10 - Tue, Sep 16
JetBlue Logo
2:17 pm - 10:24 pmPWM-SEA
11h 07m1 stop
JetBlue Logo
11:40 pm - 1:22 pmSEA-PWM
10h 42m1 stop
$262JetBlue
Find Deal
Thu, Oct 2 - Mon, Oct 6
American Airlines Logo
6:00 am - 11:03 amPWM-SEA
8h 03m1 stop
American Airlines Logo
12:03 pm - 10:48 pmSEA-PWM
7h 45m1 stop
$283American Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
United Airlines Logo
7:30 am - 3:51 pmPWM-SEA
11h 21m2 stops
United Airlines Logo
7:00 am - 5:42 pmSEA-PWM
7h 42m1 stop
$288United Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
Delta Logo
4:48 pm - 11:57 pmPWM-SEA
10h 09m2 stops
Delta Logo
6:05 am - 11:07 pmSEA-PWM
14h 02m2 stops
$293Delta
Find Deal
Tue, Nov 4 - Tue, Nov 11
American Airlines Logo
9:18 am - 4:53 pmPWM-SEA
10h 35m1 stop
American Airlines Logo
11:05 pm - 12:29 pmSEA-PWM
10h 24m1 stop
$304American Airlines
Find Deal
Tue, Sep 23 - Mon, Sep 29
Delta Logo
4:48 pm - 10:03 pmPWM-SEA
8h 15m1 stop
Delta Logo
11:05 pm - 11:51 amSEA-PWM
9h 46m1 stop
$310Delta
Find Deal
Fri, Nov 7 - Tue, Nov 11
United Airlines Logo
4:56 pm - 10:20 pmPWM-SEA
8h 24m1 stop
United Airlines Logo
10:55 pm - 9:58 amSEA-PWM
8h 03m1 stop
$349United Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
Sun Country Air Logo
12:54 pm - 10:43 pmPWM-SEA
12h 49m1 stop
Sun Country Air Logo
11:55 pm - 11:40 amSEA-PWM
8h 45m1 stop
$389Sun Country Air
Find Deal
Thu, Aug 28 - Sun, Aug 31
Sun Country Air Logo
12:54 pm - 10:43 pmPWM-SEA
12h 49m1 stop
Sun Country Air Logo
11:55 pm - 11:40 amSEA-PWM
8h 45m1 stop
$395Sun Country Air
Find Deal
Thu, Aug 28 - Sun, Aug 31

American Airlines flights from Portland, Maine to Seattle

Our best American Airlines deals on Portland, Maine to Seattle flight tickets
American Airlines
Oct 7
PWM6:00 amPortland
8h 03m
1 stop
SEA11:03 amSeattle/Tacoma Intl
Oct 15
SEA12:03 pmSeattle/Tacoma Intl
7h 45m
1 stop
PWM10:48 pmPortland
$283
Find similar
American Airlines
Sep 23
PWM9:18 amPortland
10h 35m
1 stop
SEA4:53 pmSeattle/Tacoma Intl
Sep 29
SEA11:05 pmSeattle/Tacoma Intl
10h 24m
1 stop
PWM12:29 pmPortland
$304
Find similar
American Airlines
Oct 2
PWM3:56 pmPortland
9h 08m
1 stop
SEA10:04 pmSeattle/Tacoma Intl
Oct 6
SEA10:49 pmSeattle/Tacoma Intl
9h 25m
1 stop
PWM11:14 amPortland
$324
Find similar

JetBlue flights from Portland, Maine to Seattle

Our best JetBlue deals on Portland, Maine to Seattle flight tickets
JetBlue
Sep 10
PWM2:17 pmPortland
11h 03m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Sep 16
SEA11:59 pmSeattle/Tacoma Intl
10h 23m
1 stop
PWM1:22 pmPortland
$261
Find similar
JetBlue
Oct 2
PWM2:17 pmPortland
11h 07m
1 stop
SEA10:24 pmSeattle/Tacoma Intl
Oct 6
SEA11:40 pmSeattle/Tacoma Intl
10h 42m
1 stop
PWM1:22 pmPortland
$262
Find similar
JetBlue
Sep 9
PWM2:17 pmPortland
11h 07m
1 stop
SEA10:24 pmSeattle/Tacoma Intl
Sep 23
SEA11:59 pmSeattle/Tacoma Intl
10h 23m
1 stop
PWM1:22 pmPortland
$267
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Portland, Maine to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 9/10

2:17 pm-10:20 pm

1 stop11h 03m

Seattle/Tacoma Intl

Tue 9/16

11:59 pm-1:22 pm

1 stop10h 23m

$261

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

$262

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 10/7

6:00 am-11:03 am

1 stop8h 03m

Seattle/Tacoma Intl

Wed 10/15

12:03 pm-10:48 pm

1 stop7h 45m

$283

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 9/10

7:30 am-3:51 pm

2 stops11h 21m

Seattle/Tacoma Intl

Tue 9/16

7:00 am-5:42 pm

1 stop7h 42m

$288

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 11/4

4:48 pm-11:57 pm

2 stops10h 09m

Seattle/Tacoma Intl

Tue 11/11

6:05 am-11:07 pm

2 stops14h 02m

$293

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 9/23

9:18 am-4:53 pm

1 stop10h 35m

Seattle/Tacoma Intl

Mon 9/29

11:05 pm-12:29 pm

1 stop10h 24m

$304

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Fri 11/7

4:48 pm-10:03 pm

1 stop8h 15m

Seattle/Tacoma Intl

Tue 11/11

11:05 pm-11:51 am

1 stop9h 46m

$310

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 9/10

4:56 pm-10:20 pm

1 stop8h 24m

Seattle/Tacoma Intl

Wed 9/17

10:55 pm-9:58 am

1 stop8h 03m

$349

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 8/28

12:54 pm-10:43 pm

1 stop12h 49m

Seattle/Tacoma Intl

Sun 8/31

11:55 pm-11:40 am

1 stop8h 45m

$389

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Thu 8/28

12:54 pm-10:43 pm

1 stop12h 49m

Seattle/Tacoma Intl

Sun 8/31

11:55 pm-11:40 am

1 stop8h 45m

$395

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Portland, Maine to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland, Maine and Seattle?

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Portland, Maine to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $403. If you don’t want to visit Seattle in January, then you should wait until September to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $412.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Portland, Maine is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $516. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $684.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Portland, Maine in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $506 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the evening, with an average ticket price of $606. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $514 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Portland, Maine for as low as $401 on momondo.

Can stopping save me money on Portland, Maine to Seattle flights?

You could potentially save up to 21% on your flight if you consider stops on a Portland, Maine to Seattle flight.

How have Portland, Maine to Seattle flight prices changed over time?

As of August 2025, prices for Portland, Maine to Seattle flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Portland, Maine to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to Seattle (PWM to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Seattle

Best Price Found

$141

Fastest flight time

8h 03m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Portland, Maine in the past 72 hours is $141. The best round-trip flight deal from Portland, Maine to Seattle found on momondo in the last 72 hours is $261.
The fastest flight from Portland, Maine to Seattle takes 8h 03m
There are no direct flights from Portland, Maine to Seattle. Popular non-direct route for this connection is Portland Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • How far is Portland to Seattle/Tacoma Intl by plane?

    A flight from Portland to Seattle/Tacoma Intl will travel around 2481.6 mi. Flights usually cover this in 8h 03m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Portland Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Portland Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland, Maine to Seattle?

Best airlines flying from Portland, Maine to Seattle

Compare and see reviews for airlines that fly from Portland, Maine to Seattle with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $240Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Sun Country AirPriceFrom $304Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
DeltaPriceFrom $312Free CancellationRating
8.0
7,980 reviews
Search Delta flights
United AirlinesPriceFrom $336Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
SouthwestPriceFrom $397Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $531Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Kent
Lynnwood
Federal Way
Puyallup
Marysville
Tukwila
Kirkland
Lakewood
Centralia
Shoreline
Cle Elum
Fife
Westport
Redmond

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Portland to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Portland which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Portland to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Portland.

I’m not ready to book a flight from Portland to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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