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Washington, D.C.

$129+ Cheap flights from Portland, ME (PWM) to Washington, D.C. (WAS)

PWM — WAS
Sep 20 — Sep 271
Sun 9/20
Sun 9/27
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Washington, D.C. are usually found in February or October, booked 48 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from Portland to Washington, D.C.

Cheapest flights from Portland to Washington, D.C.

Sat 10/36:00 am -
Nonstop1h 50m
Tue 10/61:59 pm -
Nonstop1h 44m
Deal found 8/21$257
Fri 9/185:05 pm -
Nonstop1h 54m
Mon 9/2110:04 pm -
Nonstop1h 41m
Deal found 8/21$258
Fri 10/25:15 am -
Nonstop1h 52m
Mon 10/58:18 am -
Nonstop1h 44m
Deal found 8/17$259
Thu 9/106:00 am -
Nonstop1h 50m
Sun 9/1310:04 pm -
Nonstop1h 41m
Deal found 8/16$260
Thu 10/19:50 am -
Nonstop1h 52m
Sat 10/35:30 pm -
Nonstop1h 54m
Deal found 8/19$266
Fri 10/95:15 am -
Nonstop1h 52m
Mon 10/1210:10 pm -
Nonstop1h 49m
Deal found 8/18$270
Fri 10/95:15 am -
Nonstop1h 52m
Sun 10/1110:10 pm -
Nonstop1h 49m
Deal found 8/20$274
Tue 11/245:56 am -
Nonstop1h 59m
Fri 11/278:03 am -
Nonstop1h 48m
Deal found 8/17$274
Fri 10/25:30 pm -
Nonstop1h 35m
Mon 10/510:25 pm -
Nonstop1h 30m
Deal found 8/21$275
Tue 10/206:00 am -
Nonstop1h 56m
Fri 10/2310:18 pm -
Nonstop1h 41m
Deal found 8/21$275
Thu 10/86:04 am -
1 stop5h 46m
Tue 10/136:32 pm -
1 stop5h 38m
Deal found 8/21$277
Tue 10/279:20 am -
Nonstop1h 35m
Sat 10/318:40 am -
Nonstop1h 30m
Deal found 8/17$277

Find flight deals from Portland to Washington, D.C.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$257
(American Airlines)

One-way from

$129
(Southwest)

Popular in

June

Cheapest in

February

Average price

$319

Good round-trip deal

$302 or less

Good one-way deal

$214 or less
Provider with most accurate pricing for Portland-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Portland-Washington, D.C. (WAS) flights.
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From Portland to Washington, D.C. (WAS)
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One-way flight from Portland to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Portland to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Portland to Washington, D.C. (WAS).
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandWashington, D.C.

PWM Portland - IAD Washington, D.C. Dulles Intl

PWMIAD

Portland

Thu 10/22

7:25 pm-9:20 pm

Nonstop1h 55m

Washington, D.C. Dulles Intl

Sun 10/25

10:13 pm-11:59 pm

Nonstop1h 46m

$259

PortlandWashington, D.C.

PWM Portland - DCA Washington, D.C. Reagan-National

PWMDCA

Portland

Sat 9/26

6:00 am-7:50 am

Nonstop1h 50m

Washington, D.C. Reagan-National

Tue 9/29

10:04 pm-11:45 pm

Nonstop1h 41m

$259

PortlandWashington, D.C.

PWM Portland - IAD Washington, D.C. Dulles Intl

PWMIAD

Portland

Wed 10/21

6:00 am-11:25 am

1 stop5h 25m

Washington, D.C. Dulles Intl

Sat 10/24

12:47 pm-2:38 pm

Nonstop1h 51m

$269

PortlandWashington, D.C.

PWM Portland - IAD Washington, D.C. Dulles Intl

PWMIAD

Portland

Sat 9/19

6:53 pm-10:59 pm

1 stop4h 06m

Washington, D.C. Dulles Intl

Mon 9/21

12:47 pm-2:38 pm

Nonstop1h 51m

$269

PortlandWashington, D.C.

PWM Portland - IAD Washington, D.C. Dulles Intl

PWMIAD

Portland

Fri 10/9

5:15 am-7:07 am

Nonstop1h 52m

Washington, D.C. Dulles Intl

Mon 10/12

10:10 pm-11:59 pm

Nonstop1h 49m

$270

PortlandBaltimore

PWM Portland - BWI Baltimore/Washington

PWMBWI

Portland

Thu 11/5

5:10 pm-6:50 pm

Nonstop1h 40m

Baltimore/Washington

Mon 11/9

8:55 am-10:30 am

Nonstop1h 35m

$277

PortlandBaltimore

PWM Portland - BWI Baltimore/Washington

PWMBWI

Portland

Tue 11/3

12:45 pm-2:25 pm

Nonstop1h 40m

Baltimore/Washington

Thu 11/5

11:35 am-1:05 pm

Nonstop1h 30m

$277

PortlandBaltimore

PWM Portland - BWI Baltimore/Washington

PWMBWI

Portland

Sat 9/12

5:40 am-7:15 am

Nonstop1h 35m

Baltimore/Washington

Mon 9/14

8:55 pm-10:30 pm

Nonstop1h 35m

$277

PortlandWashington, D.C.

PWM Portland - DCA Washington, D.C. Reagan-National

PWMDCA

Portland

Tue 10/6

1:52 pm-8:43 pm

1 stop6h 51m

Washington, D.C. Reagan-National

Sat 10/10

5:25 pm-9:01 pm

1 stop3h 36m

$279

PortlandWashington, D.C.

PWM Portland - IAD Washington, D.C. Dulles Intl

PWMIAD

Portland

Fri 10/2

6:54 pm-10:59 pm

1 stop4h 05m

Washington, D.C. Dulles Intl

Sun 10/4

10:10 pm-11:59 pm

Nonstop1h 49m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/21

Showing 1-10 of 54 resultsSorted by cheapest first
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Compare providers for flights from Portland to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Washington, D.C. in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portland with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Portland to Washington, D.C.

What is the cheapest month to book a flight from Portland, Maine to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $285). Flying from Portland, Maine to Washington, D.C. in March is currently the most expensive (average of $408). 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 WAS?

It’s optimal to fly from Portland, Maine to Washington, D.C. in the morning. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the evening.

Weekly flight availability from Portland, Maine to Washington, D.C.

The most flights from PWM to WAS are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from Portland, Maine to Washington, D.C.?

Airfare is typical for this route at the moment.
Portland, Maine to Washington, D.C. flights typically cost between $252 and $418 in October.
The cheapest round-trip price found within the last 5 days was $257 on Southwest (Oct 22-Oct 26).

How far ahead should I book a flight from Portland, Maine to Washington, D.C.?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland, Maine to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest day to fly from Portland, Maine to Washington, D.C.?

Travelers seeking maximum savings on their Portland, Maine to Washington, D.C. flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from Portland to Washington, D.C., such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,215 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,215 reviews
Southwest
8.0
Very good
4,215 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,106 reviews
Southwest
8.0
Very good
4,215 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,980 reviews
Southwest
8.0
Very good
4,215 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

Related info for your journey

  • What airport do you fly from for flights from Portland to Washington, D.C.?

    For a flight from Portland to Washington, D.C., you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city. Portland is the only Portland airport and it handles 9 outbound flights to Washington, D.C. per day. 3 airlines have flights to Washington, D.C. from Portland on a regular basis.

  • How long is the flight from Portland, Maine to Washington, D.C.?

    United Airlines, American Airlines, and Southwest can get you from Portland, Maine to Washington, D.C. in just under 1h 35m. Your travel time will be generally consistent. Portland, Maine and Washington, D.C. are separated by a distance of 451 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Portland, Maine to Washington, D.C. round-trip?

    According to our current data, American Airlines ($189), and United Airlines ($204) offers the cheapest pricing from Portland, Maine to Washington, D.C.. American Airlines is currently priced 37% below the average price you’ll pay for this route.

  • What are the most popular routes from Portland, Maine to Washington, D.C.?

    The most popular flight routes from Portland, Maine to Washington, D.C. are Portland - Washington, D.C. Reagan-National, Portland - Washington, D.C. Dulles Intl and Portland - Baltimore/Washington.

  • What are the most reliable airlines from Portland, Maine to Washington, D.C.?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland, Maine to Washington, D.C. on time: Republic Airways (84%), Avianca (79%), Copa Airlines (79%).

  • What are the cheapest flights from Portland, Maine to Washington, D.C.?

    Looking at all options, your cheapest flight can be booked for $213. While the most popular route (Portland - Washington, D.C. Reagan-National) can be booked for $279 on average, our data indicates $1,371 when flying from Portland, Maine to Washington, D.C..

  • Can I find deals for flights from Portland to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Portland to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Washington, D.C..

  • Can I find deals for business class flights from Portland to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Portland to Washington, D.C. 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 Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $285). Flying from Portland, Maine to Washington, D.C. in March is currently the most expensive (average of $408). 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley
Woodbridge
Silver Spring
Largo

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Portland to Washington, D.C.

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$342FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$204Average$369FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$269Average$392FlexibilityNo cancel feeOn-time63%

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