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Washington, D.C.

$108+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — WAS
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Portland to Washington, D.C. are usually found in February or September, booked 72 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.
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 March 23, 2026.

This American Airlines deal was found by Cheapflights users on 3/21. 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 5/1610:54 am
PWM
-
DCA
Nonstop1h 55m
American Airlines
Sat 5/163:00 pm
DCA
-
PWM
1 stop18h 54m
American Airlines
Deal found 3/21$232
This United Airlines deal was found by Cheapflights users on 3/23. 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 5/169:20 am
PWM
-
IAD
Nonstop1h 49m
United Airlines
Tue 5/195:42 pm
IAD
-
PWM
1 stop5h 47m
United Airlines
Deal found 3/23$242
This American Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 5/211:35 pm
PWM
-
DCA
1 stop5h 11m
American Airlines
Tue 5/2610:20 pm
DCA
-
PWM
Nonstop1h 39m
American Airlines
Deal found 3/23$242
This United Airlines deal was found by Cheapflights users on 3/20. 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 6/37:16 pm
PWM
-
IAD
Nonstop1h 58m
United Airlines
Sat 6/610:10 pm
IAD
-
PWM
Nonstop1h 41m
United Airlines
Deal found 3/20$245
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/157:33 pm
PWM
-
IAD
Nonstop1h 56m
United Airlines
Wed 4/228:36 am
IAD
-
PWM
Nonstop1h 46m
United Airlines
Deal found 3/18$246
This United Airlines deal was found by Cheapflights users on 3/22. 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 5/297:16 pm
PWM
-
IAD
Nonstop1h 58m
United Airlines
Tue 6/210:10 pm
IAD
-
PWM
Nonstop1h 41m
United Airlines
Deal found 3/22$249
This Southwest deal was found by Cheapflights users on 3/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:35 am
PWM
-
BWI
Nonstop1h 40m
Southwest
Tue 6/95:00 pm
BWI
-
PWM
Nonstop1h 30m
Southwest
Deal found 3/20$249
This American Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 6/115:38 am
PWM
-
DCA
Nonstop1h 56m
American Airlines
Mon 6/152:54 pm
DCA
-
PWM
Nonstop1h 43m
American Airlines
Deal found 3/23$249
This Delta deal was found by Cheapflights users on 3/23. 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 5/212:38 pm
PWM
-
IAD
1 stop4h 15m
Delta
Tue 5/267:33 pm
IAD
-
PWM
1 stop5h 10m
Delta
Deal found 3/23$252
This American Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 4/306:00 am
PWM
-
DCA
Nonstop1h 50m
American Airlines
Mon 5/48:27 am
DCA
-
PWM
Nonstop1h 40m
American Airlines
Deal found 3/22$252
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Mon 5/185:30 am
PWM
-
IAD
Nonstop1h 52m
United Airlines
Wed 5/2010:10 pm
IAD
-
PWM
Nonstop1h 49m
United Airlines
Deal found 3/18$254
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Mon 4/277:33 pm
PWM
-
IAD
Nonstop1h 56m
United Airlines
Wed 4/298:36 am
IAD
-
PWM
Nonstop1h 46m
United Airlines
Deal found 3/19$257

Find 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(American Airlines)

One-way from

$108
(United Airlines)

Popular in

November

Cheapest in

February

Average price

$295

Good round-trip deal

$327 or less

Good one-way deal

$189 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. 4% potential increase in price ($12 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 March 2026
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 March 23, 2026.
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 - IAD

PWMIAD

Portland

Fri 5/22

2:20 pm-4:30 pm

Nonstop2h 10m

Washington, D.C. Dulles Intl

Sun 5/24

5:42 pm-11:30 pm

1 stop5h 48m

$259

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Fri 5/29

6:00 am-11:28 am

1 stop5h 28m

Washington, D.C. Dulles Intl

Tue 6/2

10:10 pm-11:51 pm

Nonstop1h 41m

$259

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Thu 4/9

6:03 am-10:01 am

1 stop3h 58m

Washington, D.C. Reagan-National

Thu 4/16

6:05 am-11:02 am

1 stop4h 57m

$269

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Sat 5/2

4:43 pm-10:50 pm

1 stop6h 07m

Washington, D.C. Reagan-National

Sat 5/9

7:00 am-12:17 pm

1 stop5h 17m

$269

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Sat 5/23

8:05 am-5:27 pm

2 stops9h 22m

Washington, D.C. Reagan-National

Wed 5/27

6:20 am-10:23 am

1 stop4h 03m

$270

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Thu 5/21

6:25 am-10:00 am

1 stop3h 35m

Washington, D.C. Reagan-National

Tue 5/26

2:45 pm-11:18 pm

2 stops8h 33m

$270

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Thu 4/9

6:03 am-10:01 am

1 stop3h 58m

Washington, D.C. Reagan-National

Tue 4/14

12:30 pm-11:24 pm

2 stops10h 54m

$270

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Wed 6/3

6:25 am-12:23 pm

1 stop5h 58m

Washington, D.C. Dulles Intl

Sat 6/6

7:33 pm-12:43 am

1 stop5h 10m

$293

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Tue 4/21

5:26 pm-11:17 pm

1 stop5h 51m

Washington, D.C. Reagan-National

Tue 4/28

6:05 am-11:02 am

1 stop4h 57m

$294

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Thu 5/7

4:50 pm-6:35 pm

Nonstop1h 45m

Baltimore/Washington

Sun 5/10

10:35 am-12:05 pm

Nonstop1h 30m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/18

Showing 1-10 of 59 resultsSorted by cheapest first
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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 March.
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
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 March 13, 2026.

Booking 72 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, April is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $48). Flying from Portland, Maine to Washington, D.C. in October is currently the most expensive (average of $137). 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 March 23, 2026.

It’s optimal to fly from Portland, Maine to Washington, D.C. in the morning. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

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 March 14, 2026.

Travelers seeking maximum savings on their Portland, Maine to Washington, D.C. flight should consider departing on Saturday 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.

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

Explore weekly flight availability from Portland to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 23, 2026.

The most flights from PWM to WAS are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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

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 March 23, 2026.
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
4,328 reviews

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,328 reviews
Southwest
8.0
Very good
4,328 reviews

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,467 reviews
Southwest
8.0
Very good
4,328 reviews

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,492 reviews
Southwest
8.0
Very good
4,328 reviews

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 8 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 2h 13m. 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 ($198) 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 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 (100%), CommutAir (90%), United Airlines (87%).

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

    Looking at all options, your cheapest flight can be booked for $159. While the most popular route (Portland - Washington, D.C. Reagan-National) can be booked for $269 on average, our data indicates $396 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, April is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $48). Flying from Portland, Maine to Washington, D.C. in October is currently the most expensive (average of $137). 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
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park
Cordova

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$176Average$258FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$189Average$326FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$202Average$344FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$248Average$371FlexibilityNo cancel feeOn-time63%

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