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Washington, D.C.

$112+ Cheap flights from Portland, ME (PWM) to Washington, D.C. (WAS)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — WAS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Washington, D.C. are usually found in September or January, booked 86 days in advance, depart on a Friday or Thursday and return on a Saturday

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

Cheapest flights from Portland to Washington, D.C.
Explore the most affordable flight options available from Portland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 11/139:54 amPWM - IAD
Nonstop1h 56mUnited Airlines
Mon 11/178:20 amIAD - PWM
Nonstop1h 44mUnited Airlines
Deal found 10/27$194
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 11/149:54 amPWM - IAD
Nonstop1h 56mUnited Airlines
Mon 11/178:20 amIAD - PWM
Nonstop1h 44mUnited Airlines
Deal found 10/28$199
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/127:22 pmPWM - IAD
Nonstop1h 56mUnited Airlines
Wed 11/1910:13 pmIAD - PWM
Nonstop1h 46mUnited Airlines
Deal found 10/28$204
This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 12/114:53 pmPWM - IAD
1 stop6h 15mDelta
Tue 12/166:00 amIAD - PWM
1 stop6h 13mDelta
Deal found 10/30$209
This Delta deal was found by Cheapflights users on 10/30. 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.
Wed 12/34:53 pmPWM - DCA
1 stop6h 15mDelta
Sat 12/65:02 pmDCA - PWM
1 stop6h 57mDelta
Deal found 10/30$209
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Sat 11/227:22 pmPWM - IAD
Nonstop1h 53mUnited Airlines
Tue 11/2512:35 pmIAD - PWM
Nonstop1h 44mUnited Airlines
Deal found 10/27$210
This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 12/46:15 amPWM - IAD
1 stop5h 24mDelta
Sat 12/611:06 amIAD - PWM
2 stops9h 45mDelta
Deal found 10/30$214
This Delta deal was found by Cheapflights users on 10/30. 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.
Wed 12/34:53 pmPWM - DCA
1 stop6h 15mDelta
Mon 12/812:32 pmDCA - PWM
2 stops11h 27mDelta
Deal found 10/30$214
This American Airlines deal was found by Cheapflights users on 10/29. 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.
Sat 12/135:34 amPWM - DCA
Nonstop2h 00mAmerican Airlines
Sat 12/2010:15 pmDCA - PWM
Nonstop1h 33mAmerican Airlines
Deal found 10/29$218
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 11/147:22 pmPWM - IAD
Nonstop1h 56mUnited Airlines
Tue 11/1812:35 pmIAD - PWM
Nonstop1h 44mUnited Airlines
Deal found 10/30$219
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 11/145:43 amPWM - DCA
Nonstop1h 55mAmerican Airlines
Tue 11/1810:00 amDCA - PWM
Nonstop1h 46mAmerican Airlines
Deal found 10/30$219
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 11/207:22 pmPWM - IAD
Nonstop1h 56mUnited Airlines
Sun 11/238:20 amIAD - PWM
Nonstop1h 44mUnited Airlines
Deal found 10/27$220

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

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Washington, D.C. (WAS). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$199
(United Airlines)

One-way from

$112
(Kiwi.com)

Popular in

February

Cheapest in

September

Average price

$255

Good round-trip deal

$272 or less

Good one-way deal

$169 or less
Provider with most accurate pricing for Portland-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Washington, D.C. (WAS) flights.
Search Deals
From Portland to Washington, D.C. (WAS)
Search Deals
One-way flight from Portland to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Portland to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Portland to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Washington, D.C. 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 October 30, 2025.
Use the filters below to find and compare flights from Portland to Washington, D.C. that are best for you.

Fly from

Portland

Fly to

Washington, D.C.

Route

Depart

Return

Price

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Wed 11/19

7:22 pm-9:18 pm

Nonstop1h 56m

Washington, D.C. Dulles Intl

Sat 11/22

10:13 pm-11:59 pm

Nonstop1h 46m

$204

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Wed 12/10

2:34 pm-7:19 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Sat 12/13

3:38 pm-10:23 pm

1 stop6h 45m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Fri 12/12

4:53 pm-11:08 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Sat 12/13

11:06 am-4:00 pm

1 stop4h 54m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Thu 12/11

4:53 pm-11:08 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Sat 12/13

3:38 pm-10:23 pm

1 stop6h 45m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Sat 12/13

4:45 pm-11:08 pm

1 stop6h 23m

Washington, D.C. Dulles Intl

Tue 12/16

7:59 pm-11:59 pm

1 stop4h 00m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Wed 12/10

6:15 am-11:39 am

1 stop5h 24m

Washington, D.C. Dulles Intl

Wed 12/17

3:38 pm-10:23 pm

1 stop6h 45m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Fri 12/12

4:53 pm-11:08 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Mon 12/15

7:59 pm-11:59 pm

1 stop4h 00m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Thu 1/22

6:17 am-11:43 am

1 stop5h 26m

Washington, D.C. Dulles Intl

Sat 1/24

6:00 am-12:08 pm

1 stop6h 08m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Thu 12/4

4:53 pm-11:08 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Sat 12/6

6:00 am-12:13 pm

1 stop6h 13m

$209

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Thu 12/11

4:53 pm-11:08 pm

1 stop6h 15m

Washington, D.C. Dulles Intl

Wed 12/17

7:59 pm-12:04 am

1 stop4h 05m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 54 results
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Compare providers for flights from Portland to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Washington, D.C. flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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
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 Washington, D.C.

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Washington, D.C.. Price data was last updated on October 24, 2025.

Booking 70 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 month to book a flight from Portland, Maine to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $38). Flying from Portland, Maine to Washington, D.C. in September is currently the most expensive (average of $100). 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?

Find hourly flight availability from Portland to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from Portland, Maine to Washington, D.C. in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Washington, D.C.. Price data was last updated on October 26, 2025.

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

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated October 30, 2025.
Read through reviews of airlines operating flights from Portland to Washington, D.C., such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Portland to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 3 outbound flights to Washington, D.C. per day. 4 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, Delta, and Southwest can get you from Portland, Maine to Washington, D.C. in just under 1h 45m. Your travel time can differ by up to 3h. Portland, Maine and Washington, D.C. are separated by a distance of 451 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Delta ($176), American Airlines ($189), and United Airlines ($194) offers the cheapest pricing from Portland, Maine to Washington, D.C.. Delta is currently priced 37% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland, Maine to Washington, D.C. one-way?

    The cheapest airlines for a one-way flight from Portland, Maine to Washington, D.C. are United Airlines ($128), Southwest ($128), and Delta ($138).

  • 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: GoJet (100%), United Airlines (93%), Avianca (90%).

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

    Looking at all options, your cheapest flight can be booked for $125. While the most popular route (Portland - Washington, D.C. Reagan-National) can be booked for $209 on average, our data indicates $541 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, January is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $38). Flying from Portland, Maine to Washington, D.C. in September is currently the most expensive (average of $100). 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
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Portland to Washington, D.C.

Discover the top 4 airlines that operate flights from Portland to Washington, D.C.. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$176Average$258FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$189Average$313FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$194Average$300FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$239Average$355FlexibilityNo cancel feeOn-time63%

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