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Washington, D.C.

$89+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — WAS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Washington, D.C. are usually found in September or January, booked 70 days in advance, depart on a Friday or Wednesday and return on a Saturday

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 July 29, 2025.

Round-trip from

$177
(Southwest)

One-way from

$89
(Southwest)

Popular in

February

Cheapest in

September

Average price

$323

Good round-trip deal

$263 or less

Good one-way deal

$190 or less
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. 1% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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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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 July 29, 2025.

This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:45 amPWM - BWI
Nonstop1h 35mSouthwest
Tue 9/304:50 pmBWI - PWM
Nonstop1h 30mSouthwest
Deal found 7/28$177
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:33 pmPWM - BWI
1 stop4h 44mDelta
Sat 8/304:39 pmBWI - PWM
1 stop7h 24mDelta
Deal found 7/28$187
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:31 amPWM - IAD
1 stop5h 31mDelta
Tue 9/25:25 pmIAD - PWM
1 stop6h 38mDelta
Deal found 7/28$197
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:00 amPWM - DCA
1 stop5h 20mDelta
Sat 8/304:10 pmDCA - PWM
1 stop7h 53mDelta
Deal found 7/28$197
This JetBlue deal was found by Cheapflights users on 7/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/242:17 pmPWM - DCA
1 stop5h 05mJetBlue
Sun 9/285:30 pmDCA - PWM
1 stop4h 37mJetBlue
Deal found 7/29$209
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:02 pmPWM - DCA
1 stop8h 43mAmerican Airlines
Wed 9/172:54 pmDCA - PWM
Nonstop1h 40mAmerican Airlines
Deal found 7/27$211
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/146:01 amPWM - DCA
1 stop4h 26mUnited Airlines
Mon 8/187:01 pmDCA - PWM
1 stop4h 13mUnited Airlines
Deal found 7/27$214
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/107:26 pmPWM - IAD
Nonstop1h 49mUnited Airlines
Sun 9/145:50 pmIAD - PWM
1 stop5h 13mUnited Airlines
Deal found 7/28$224
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:10 pmPWM - BWI
1 stop5h 58mAmerican Airlines
Mon 9/156:14 amBWI - PWM
1 stop6h 53mAmerican Airlines
Deal found 7/28$248
This eDestinos deal was found by Cheapflights users on 7/27. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/812:52 pmPWM - BWI
1 stop22h 31mMultiple Airlines
Sun 8/1011:08 amBWI - PWM
1 stop9h 04mMultiple Airlines
Deal found 7/27$288
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:43 pmPWM - IAD
1 stop4h 59mAmerican Airlines
Mon 9/227:21 pmIAD - PWM
2 stops17h 10mAmerican Airlines
Deal found 7/27$306

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 July 29, 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

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Sat 9/27

5:45 am-7:20 am

Nonstop1h 35m

Baltimore/Washington

Tue 9/30

4:50 pm-6:20 pm

Nonstop1h 30m

$177

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Tue 8/26

6:00 am-12:30 pm

1 stop6h 30m

Baltimore/Washington

Wed 8/27

6:25 pm-12:03 am

1 stop5h 38m

$187

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Tue 8/26

6:31 am-12:02 pm

1 stop5h 31m

Washington, D.C. Dulles Intl

Tue 9/2

5:25 pm-12:03 am

1 stop6h 38m

$197

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Wed 8/27

6:00 am-11:20 am

1 stop5h 20m

Washington, D.C. Reagan-National

Sat 8/30

4:10 pm-12:03 am

1 stop7h 53m

$197

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Tue 10/21

3:38 pm-8:45 pm

1 stop5h 07m

Baltimore/Washington

Thu 10/30

9:30 am-2:35 pm

1 stop5h 05m

$201

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Wed 9/24

2:17 pm-7:22 pm

1 stop5h 05m

Washington, D.C. Reagan-National

Sun 9/28

5:30 pm-10:07 pm

1 stop4h 37m

$209

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Wed 9/10

1:02 pm-9:45 pm

1 stop8h 43m

Washington, D.C. Reagan-National

Wed 9/17

2:54 pm-4:34 pm

Nonstop1h 40m

$211

PortlandWashington, D.C.

PWM - DCA

PWMDCA

Portland

Thu 8/14

6:01 am-10:27 am

1 stop4h 26m

Washington, D.C. Reagan-National

Mon 8/18

7:01 pm-11:14 pm

1 stop4h 13m

$214

PortlandWashington, D.C.

PWM - IAD

PWMIAD

Portland

Wed 9/10

7:26 pm-9:15 pm

Nonstop1h 49m

Washington, D.C. Dulles Intl

Wed 9/17

8:15 am-9:58 am

Nonstop1h 43m

$217

PortlandBaltimore

PWM - BWI

PWMBWI

Portland

Fri 8/8

12:52 pm-11:23 am

1 stop22h 31m

Baltimore/Washington

Sun 8/10

11:08 am-8:12 pm

1 stop9h 04m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 26 results
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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 July 25, 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, August is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $241). Flying from Portland, Maine to Washington, D.C. in March is currently the most expensive (average of $290). 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 July 29, 2025.

It’s optimal to fly from Portland, Maine to Washington, D.C. in the afternoon. By choosing this option you can save up to 15% 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 July 27, 2025.

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

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 July 29, 2025.
Read through reviews of airlines operating flights from Portland to Washington, D.C., such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,979 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,913 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,238 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 5 outbound flights to Washington, D.C. per day. 4 airlines have flights to Washington, D.C. from Portland on a regular basis.

  • How popular is this Portland, Maine to Washington, D.C. flight route?

    Flights from Portland to Washington, D.C. have been viewed 43 times in the past calendar month.

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

    According to our current data, Southwest ($177), Delta ($187), and American Airlines ($201) offers the cheapest pricing from Portland, Maine to Washington, D.C.. Southwest is currently priced 38% 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 Southwest ($89), Delta ($94), and American Airlines ($108).

  • 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. Dulles Intl, Portland - Washington, D.C. Reagan-National and Portland - Baltimore/Washington.

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

    Looking at all options, your cheapest flight can be booked for $109. While the most popular route (Portland - Washington, D.C. Dulles Intl) can be booked for $189 on average our data indicates $347 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, August is the cheapest month in which you can book a flight from Portland, Maine to Washington, D.C. (average of $241). Flying from Portland, Maine to Washington, D.C. in March is currently the most expensive (average of $290). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Dundalk

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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$189Average$396FlexibilityNo cancel feeOn-time71%
DeltaCheapest$194Average$273FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$198Average$345FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$245Average$355FlexibilityNo cancel feeOn-time63%

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