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Cheap flights from Portland, Maine to Seattle from $111

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 1/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland, Maine to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
2:35 pm - 10:25 pm
PWM
-
SEA
10h 50m1 stop
Delta Logo
1:45 pm - 12:20 am
SEA
-
PWM
7h 35m1 stop
$221Delta
dom., ene. 25 - jue., ene. 29
Delta Logo
2:35 pm - 10:25 pm
PWM
-
SEA
10h 50m1 stop
Delta Logo
11:10 pm - 11:20 am
SEA
-
PWM
9h 10m2 stops
$226Delta
sáb., ene. 24 - sáb., ene. 31
Delta Logo
12:48 pm - 10:52 pm
PWM
-
SEA
13h 04m2 stops
Delta Logo
11:10 pm - 11:20 am
SEA
-
PWM
9h 10m2 stops
$231Delta
sáb., ene. 24 - sáb., ene. 31
United Airlines Logo
2:31 pm - 8:57 pm
PWM
-
SEA
9h 26m1 stop
United Airlines Logo
8:10 am - 6:54 pm
SEA
-
PWM
7h 44m1 stop
$251United Airlines
sáb., ene. 24 - sáb., ene. 31
Delta Logo
2:35 pm - 10:25 pm
PWM
-
SEA
10h 50m1 stop
Delta Logo
11:10 pm - 11:20 am
SEA
-
PWM
9h 10m2 stops
$253Delta
jue., ene. 15 - lun., ene. 19
United Airlines Logo
6:00 am - 6:14 pm
PWM
-
SEA
15h 14m2 stops
United Airlines Logo
5:10 pm - 9:01 am
SEA
-
PWM
12h 51m2 stops
$261United Airlines
mié., ene. 7 - sáb., ene. 10
United Airlines Logo
4:10 pm - 10:43 pm
PWM
-
SEA
9h 33m1 stop
United Airlines Logo
8:10 am - 6:54 pm
SEA
-
PWM
7h 44m1 stop
$263United Airlines
vie., ene. 9 - sáb., ene. 31
Delta Logo
2:35 pm - 10:25 pm
PWM
-
SEA
10h 50m1 stop
Delta Logo
1:45 pm - 12:20 am
SEA
-
PWM
7h 35m1 stop
$270Delta
mié., ene. 7 - jue., ene. 8
Delta Logo
2:35 pm - 10:25 pm
PWM
-
SEA
10h 50m1 stop
Delta Logo
11:10 pm - 12:30 pm
SEA
-
PWM
10h 20m2 stops
$275Delta
mié., ene. 7 - vie., ene. 9
American Airlines Logo
3:58 pm - 10:07 pm
PWM
-
SEA
9h 09m1 stop
American Airlines Logo
8:04 am - 11:43 pm
SEA
-
PWM
12h 39m2 stops
$279American Airlines
dom., ene. 25 - jue., ene. 29

American Airlines flights from Portland, Maine to Seattle

Our best American Airlines deals on Portland, Maine to Seattle flight tickets
American Airlines
Jan 15
PWM12:46 pmPortland
12h 34m
2 stops
SEA10:20 pmSeattle/Tacoma Intl
Jan 19
SEA9:45 pmSeattle/Tacoma Intl
11h 21m
2 stops
PWM12:06 pmPortland
$231
Find similar
American Airlines
Apr 15
PWM1:15 pmPortland
12h 50m
2 stops
SEA11:05 pmSeattle/Tacoma Intl
Apr 20
SEA11:33 pmSeattle/Tacoma Intl
9h 27m
1 stop
PWM12:00 pmPortland
$263
Find similar
American Airlines
Jan 25
PWM3:58 pmPortland
9h 09m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
Jan 29
SEA8:04 amSeattle/Tacoma Intl
12h 39m
2 stops
PWM11:43 pmPortland
$279
Find similar

Delta flights from Portland, Maine to Seattle

Our best Delta deals on Portland, Maine to Seattle flight tickets
Delta
Jan 25
PWM2:35 pmPortland
10h 50m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
Jan 29
SEA1:45 pmSeattle/Tacoma Intl
7h 35m
1 stop
PWM12:20 amPortland
$221
Find similar
Delta
Jan 24
PWM2:35 pmPortland
10h 50m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
Jan 31
SEA11:10 pmSeattle/Tacoma Intl
9h 10m
2 stops
PWM11:20 amPortland
$226
Find similar
Delta
Jan 15
PWM2:35 pmPortland
10h 50m
1 stop
SEA10:25 pmSeattle/Tacoma Intl
Jan 19
SEA11:10 pmSeattle/Tacoma Intl
9h 10m
2 stops
PWM11:20 amPortland
$253
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 diciembre 11, 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

dom. 1/25

2:35 pm-10:25 pm

1 stop10h 50m

Seattle/Tacoma Intl

jue. 1/29

1:45 pm-12:20 am

1 stop7h 35m

$221

PortlandSeattle

PWM - SEA

PWMSEA

Portland

sáb. 1/24

2:35 pm-10:25 pm

1 stop10h 50m

Seattle/Tacoma Intl

sáb. 1/31

11:10 pm-11:20 am

2 stops9h 10m

$226

PortlandSeattle

PWM - SEA

PWMSEA

Portland

sáb. 1/24

12:48 pm-10:52 pm

2 stops13h 04m

Seattle/Tacoma Intl

sáb. 1/31

11:10 pm-11:20 am

2 stops9h 10m

$231

PortlandSeattle

PWM - SEA

PWMSEA

Portland

sáb. 1/24

2:31 pm-8:57 pm

1 stop9h 26m

Seattle/Tacoma Intl

sáb. 1/31

8:10 am-6:54 pm

1 stop7h 44m

$251

PortlandSeattle

PWM - SEA

PWMSEA

Portland

jue. 1/15

2:35 pm-10:25 pm

1 stop10h 50m

Seattle/Tacoma Intl

lun. 1/19

11:10 pm-11:20 am

2 stops9h 10m

$253

PortlandSeattle

PWM - SEA

PWMSEA

Portland

mié. 1/7

6:00 am-6:14 pm

2 stops15h 14m

Seattle/Tacoma Intl

sáb. 1/10

5:10 pm-9:01 am

2 stops12h 51m

$261

PortlandSeattle

PWM - SEA

PWMSEA

Portland

vie. 1/9

4:10 pm-10:43 pm

1 stop9h 33m

Seattle/Tacoma Intl

sáb. 1/31

8:10 am-6:54 pm

1 stop7h 44m

$263

PortlandSeattle

PWM - SEA

PWMSEA

Portland

mié. 1/7

2:35 pm-10:25 pm

1 stop10h 50m

Seattle/Tacoma Intl

jue. 1/8

1:45 pm-12:20 am

1 stop7h 35m

$270

PortlandSeattle

PWM - SEA

PWMSEA

Portland

mié. 1/7

2:35 pm-10:25 pm

1 stop10h 50m

Seattle/Tacoma Intl

vie. 1/9

11:10 pm-12:30 pm

2 stops10h 20m

$275

PortlandSeattle

PWM - SEA

PWMSEA

Portland

dom. 1/25

3:58 pm-10:07 pm

1 stop9h 09m

Seattle/Tacoma Intl

jue. 1/29

8:04 am-11:43 pm

2 stops12h 39m

$279

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 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 $363. If you don’t want to visit Seattle in January, then you should wait until November to fly from Portland, Maine, when ticket prices are also cheap, with an average price of $375.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $399. 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 $510.

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

Flying to Seattle from Portland, Maine in the evening is the least expensive time of day to depart. momondo users have found prices as low as $303 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $458. Departure times in the morning 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 $477 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 $416 on momondo.

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

You could potentially save up to 39% 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 December 2025, prices for Portland, Maine to Seattle flights are approximately 10% cheaper 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

Fastest flight time

7h 58m

Direct flights

None
The fastest flight from Portland, Maine to Seattle takes 7h 58m
There are no direct flights from Portland, Maine to Seattle. There are no popular flight routes from Portland, Maine to Seattle.
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 7h 58m, 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
DeltaPriceFrom $220Free CancellationRating
7.9
8,005 reviews
Search Delta flights
JetBluePriceFrom $240Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights
Sun Country AirPriceFrom $304Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
American AirlinesPriceFrom $314Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $326Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
SouthwestPriceFrom $426Free CancellationRating
7.9
4,253 reviews
Search Southwest flights

Traveling to a place near Seattle?

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

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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