What is the cheapest airline that flies from Portland to Washington?

United Airlines, American Airlines, and Southwest are the most popular carriers operating from Portland to Washington

What airlines fly to State of Washington?

Delta, Alaska Airlines and JetBlue are the top three most popular airlines that fly to State of Washington from Portland, Maine according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 8 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Washington?

Prices for flights from Portland Airport to Washington are updated daily.

How many operators does momondo search for flights from Portland Airport to Washington?

There are 5 operators available for flights from Portland Airport to Washington as of April 2026.

How old do you have to be to fly from Portland Airport to Washington?

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 Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$171 Cheap Flights from Portland to Washington in 2026

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Find the cheapest flights from Portland, Maine to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:50 pm - 11:59 pm

PWM

SEA

10h 09m

1 stop

10:41 pm - 10:18 am

SEA

PWM

8h 37m

1 stop

$316United Airlines

Sun, May 3 - Sat, May 16

5:02 pm - 12:36 am

PWM

SEA

10h 34m

2 stops

1:19 pm - 12:17 am

SEA

PWM

7h 58m

1 stop

$321American Airlines

Tue, May 5 - Tue, May 12

6:00 am - 11:34 am

PWM

SEA

8h 34m

1 stop

10:47 pm - 10:18 am

SEA

PWM

8h 31m

1 stop

$325American Airlines

Sat, May 9 - Sun, May 10

5:21 am - 4:48 pm

PWM

SEA

14h 27m

2 stops

5:30 am - 11:12 pm

SEA

PWM

14h 42m

2 stops

$326Delta

Tue, May 5 - Tue, May 12

4:50 pm - 11:59 pm

PWM

SEA

10h 09m

1 stop

10:53 pm - 10:23 am

SEA

PWM

8h 30m

1 stop

$334United Airlines

Wed, May 13 - Fri, May 15

4:49 pm - 10:02 pm

PWM

PDX

8h 13m

1 stop

11:12 pm - 11:55 am

PDX

PWM

9h 43m

1 stop

$390Delta

Sat, May 9 - Tue, May 12

5:55 am - 3:00 pm

PWM

GEG

12h 05m

2 stops

6:55 am - 10:25 pm

GEG

PWM

12h 30m

2 stops

$487Southwest

Mon, Aug 24 - Mon, Aug 31

2:10 pm - 10:00 pm

PWM

GEG

10h 50m

2 stops

6:00 am - 9:30 pm

GEG

PWM

12h 30m

1 stop

$488Southwest

Mon, Aug 24 - Mon, Aug 31

3:02 pm - 11:59 pm

PWM

PSC

11h 57m

2 stops

6:00 am - 11:27 pm

PSC

PWM

14h 27m

2 stops

$686Alaska Airlines

Sat, May 2 - Wed, May 6

3:02 pm - 11:48 pm

PWM

ALW

11h 46m

2 stops

5:00 am - 11:27 pm

ALW

PWM

15h 27m

2 stops

$898Alaska Airlines

Sat, May 2 - Wed, May 6

United Airlines flights from Portland, Maine to State of Washington

Our best United Airlines deals on Portland, Maine to State of Washington flight tickets

United Airlines

May 3

PWM4:50 pmPortland

10h 09m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

May 16

SEA10:41 pmSeattle/Tacoma Intl

8h 37m

1 stop

PWM10:18 amPortland

$316

United Airlines

May 13

PWM4:50 pmPortland

10h 09m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

May 15

SEA10:53 pmSeattle/Tacoma Intl

8h 30m

1 stop

PWM10:23 amPortland

$334

United Airlines

Oct 7

PWM6:20 pmPortland

8h 54m

1 stop

SEA12:14 amSeattle/Tacoma Intl

Oct 13

SEA10:58 pmSeattle/Tacoma Intl

7h 25m

1 stop

PWM9:23 amPortland

$341

American Airlines flights from Portland, Maine to State of Washington

Our best American Airlines deals on Portland, Maine to State of Washington flight tickets

American Airlines

May 5

PWM5:02 pmPortland

10h 34m

2 stops

SEA12:36 amSeattle/Tacoma Intl

May 12

SEA1:19 pmSeattle/Tacoma Intl

7h 58m

1 stop

PWM12:17 amPortland

$321

American Airlines

May 9

PWM6:00 amPortland

8h 34m

1 stop

SEA11:34 amSeattle/Tacoma Intl

May 10

SEA10:47 pmSeattle/Tacoma Intl

8h 31m

1 stop

PWM10:18 amPortland

$325

American Airlines

May 28

PWM6:00 amPortland

8h 46m

1 stop

SEA11:46 amSeattle/Tacoma Intl

Jun 2

SEA1:46 pmSeattle/Tacoma Intl

7h 49m

1 stop

PWM12:35 amPortland

$331

momondo Fare Finder

Use the filters below to find and compare flights from Portland, Maine to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sun 5/3

4:50 pm-11:59 pm

1 stop10h 09m

Seattle/Tacoma Intl

Sat 5/16

10:41 pm-10:18 am

1 stop8h 37m

$316

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 5/5

5:02 pm-12:36 am

2 stops10h 34m

Seattle/Tacoma Intl

Tue 5/12

1:19 pm-12:17 am

1 stop7h 58m

$321

Quickest round-trip

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Sat 5/9

6:00 am-11:34 am

1 stop8h 34m

Seattle/Tacoma Intl

Sun 5/10

10:47 pm-10:18 am

1 stop8h 31m

$325

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Tue 5/5

5:21 am-4:48 pm

2 stops14h 27m

Seattle/Tacoma Intl

Tue 5/12

5:30 am-11:12 pm

2 stops14h 42m

$326

PortlandSeattle

PWM - SEA

PWMSEA

Portland

Wed 5/13

4:50 pm-11:59 pm

1 stop10h 09m

Seattle/Tacoma Intl

Fri 5/15

10:53 pm-10:23 am

1 stop8h 30m

$334

PortlandPortland

PWM - PDX

PWMPDX

Portland

Sat 5/9

4:49 pm-10:02 pm

1 stop8h 13m

Portland

Tue 5/12

11:12 pm-11:55 am

1 stop9h 43m

$390

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Mon 8/24

5:55 am-3:00 pm

2 stops12h 05m

Spokane

Mon 8/31

6:55 am-10:25 pm

2 stops12h 30m

$487

PortlandSpokane

PWM - GEG

PWMGEG

Portland

Mon 8/24

2:10 pm-10:00 pm

2 stops10h 50m

Spokane

Mon 8/31

6:00 am-9:30 pm

1 stop12h 30m

$488

PortlandPasco

PWM - PSC

PWMPSC

Portland

Sat 5/2

3:02 pm-11:59 pm

2 stops11h 57m

Pasco Tri Cities

Wed 5/6

6:00 am-11:27 pm

2 stops14h 27m

$686

PortlandWalla Walla

PWM - ALW

PWMALW

Portland

Sat 5/2

3:02 pm-11:48 pm

2 stops11h 46m

Walla Walla

Wed 5/6

5:00 am-11:27 pm

2 stops15h 27m

$898

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to State of Washington

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

Prices

Airlines

What is the cheapest month to fly to State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from Portland, Maine, with most prices found around $375. If you aren’t able to travel to State of Washington during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $376.

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Portland, Maine for as low as $313 on momondo.

Can stopping save me money on Portland, Maine to State of Washington flights?

You could potentially save up to 7% on your flight if you consider stops on a Portland, Maine to State of Washington flight.

Cheap Portland, Maine to State of Washington flight deals and tips

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

Fastest flight time	7h 55m
Direct flights	None

The fastest flight from Portland, Maine to State of Washington takes 7h 55m

There are no direct flights from Portland, Maine to State of Washington. There are no popular flight routes from Portland, Maine to State of Washington.

Search flight deals

Frequently asked questions about flying from Portland, Maine to Washington

When did momondo last update prices for flights from Portland Airport to Washington?
Prices for flights from Portland Airport to Washington are updated daily.
How many operators does momondo search for flights from Portland Airport to Washington?
There are 5 operators available for flights from Portland Airport to Washington as of April 2026.
How old do you have to be to fly from Portland Airport to Washington?
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 Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland, Maine to State of Washington

Compare and see reviews for airlines that fly from Portland, Maine to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $155	Free Cancellation	Rating 7.9 8,419 reviews	Search Delta flights
Sun Country Air	PriceFrom $168	Free Cancellation	Rating 6.8 336 reviews	Search Sun Country Air flights
United Airlines	PriceFrom $275	Free Cancellation	Rating 7.4 9,604 reviews	Search United Airlines flights
American Airlines	PriceFrom $285	Free Cancellation	Rating 7.1 11,622 reviews	Search American Airlines flights
Southwest	PriceFrom $418	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Washington. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Washington 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 Washington?

Once you have performed a search for Portland to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.