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$128+ Cheap flights from Dulles Intl (IAD) to Portland, ME (PWM)

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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PWM
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Portland are usually found in November or May, booked 49 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap flight deals from Dulles Intl to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Portland (PWM). 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

$224
(United Airlines)

One-way from

$128
(United Airlines)

Popular in

April

Cheapest in

November

Average price

$397

Good round-trip deal

$277 or less

Good one-way deal

$211 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Portland flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Portland flights.
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From Washington, D.C. Dulles Intl to Portland
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One-way flight from Washington, D.C. Dulles Intl to Portland
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Portland.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Portland.
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Find flight deals from Dulles Intl to Portland

Cheapest flights from Dulles Intl to Portland
Explore the most affordable flight options available from Dulles Intl to Portland. 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 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:33 pmIAD - PWM
1 stop5h 44mUnited Airlines
Wed 11/193:20 pmPWM - IAD
1 stop5h 37mUnited Airlines
Deal found 10/29$224
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:33 pmIAD - PWM
1 stop5h 44mUnited Airlines
Sun 11/165:30 amPWM - IAD
Nonstop2h 00mUnited Airlines
Deal found 10/29$229
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amIAD - PWM
2 stops10h 00mDelta
Wed 11/196:00 amPWM - IAD
2 stops10h 23mDelta
Deal found 10/29$234
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:49 pmIAD - PWM
1 stop4h 05mDelta
Sat 11/152:30 pmPWM - IAD
1 stop4h 38mDelta
Deal found 10/29$239
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.
Tue 12/96:00 amIAD - PWM
2 stops10h 03mDelta
Tue 1/66:17 amPWM - IAD
1 stop5h 26mDelta
Deal found 10/30$242
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amIAD - PWM
2 stops10h 00mDelta
Sat 11/154:53 pmPWM - IAD
1 stop6h 10mDelta
Deal found 10/29$244
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:45 amIAD - PWM
1 stop4h 51mUnited Airlines
Sun 11/167:22 pmPWM - IAD
Nonstop1h 56mUnited Airlines
Deal found 10/29$247
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.
Thu 11/2712:35 pmIAD - PWM
Nonstop1h 44mUnited Airlines
Sat 11/295:30 amPWM - IAD
Nonstop1h 58mUnited Airlines
Deal found 10/28$254
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/288:20 amIAD - PWM
Nonstop1h 44mUnited Airlines
Fri 12/53:20 pmPWM - IAD
1 stop6h 05mUnited Airlines
Deal found 10/29$255
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.
Wed 11/2610:13 pmIAD - PWM
Nonstop1h 46mUnited Airlines
Thu 12/43:00 pmPWM - IAD
1 stop6h 25mUnited Airlines
Deal found 10/30$259

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Portland 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 Washington, D.C. Dulles Intl Airport to Portland that are best for you.

Fly from

Dulles Intl

Fly to

Portland

Route

Depart

Return

Price

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Tue 3/24

7:59 pm-11:49 pm

1 stop3h 50m

Portland

Tue 3/31

4:50 pm-11:02 pm

1 stop6h 12m

$234

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Thu 11/20

8:45 am-1:36 pm

1 stop4h 51m

Portland

Sun 11/23

6:00 am-11:49 am

1 stop5h 49m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 11/14

7:49 pm-11:54 pm

1 stop4h 05m

Portland

Sat 11/15

2:30 pm-7:08 pm

1 stop4h 38m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 11/14

8:45 am-1:36 pm

1 stop4h 51m

Portland

Sun 11/16

7:22 pm-9:18 pm

Nonstop1h 56m

$247

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Mon 11/24

8:20 am-10:04 am

Nonstop1h 44m

Portland

Fri 11/28

7:22 pm-9:18 pm

Nonstop1h 56m

$249

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Wed 11/12

12:35 pm-2:19 pm

Nonstop1h 44m

Portland

Sun 11/16

7:22 pm-9:18 pm

Nonstop1h 56m

$249

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 12/14

7:59 pm-11:59 pm

1 stop4h 00m

Portland

Tue 1/6

6:17 am-11:43 am

1 stop5h 26m

$254

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Thu 11/27

12:35 pm-2:19 pm

Nonstop1h 44m

Portland

Sat 11/29

5:30 am-7:28 am

Nonstop1h 58m

$254

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Wed 2/18

7:59 pm-11:49 pm

1 stop3h 50m

Portland

Sat 2/21

6:30 am-11:53 am

1 stop5h 23m

$255

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 11/28

8:20 am-10:04 am

Nonstop1h 44m

Portland

Fri 12/5

3:20 pm-9:25 pm

1 stop6h 05m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 results
1
2

Compare providers for flights from Dulles Intl to Portland

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 Dulles Intl to Portland in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Washington, D.C. Dulles Intl Airport-Portland, Maine flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Portland, Maine flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Portland, Maine 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 Washington, D.C. Dulles Intl Airport-Portland, Maine 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 Dulles Intl to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Portland

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

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

The best time to book flights from Washington, D.C. Dulles Intl Airport to Portland, Maine is 49 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $117). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in July is currently the most expensive (average of $167). 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 IAD to PWM?

Find hourly flight availability from Dulles Intl to Portland. 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.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Portland, Maine is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 24% on airfare.

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

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

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

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated October 30, 2025.
Peruse reviews from past customers who have flown with United Airlines from Washington, D.C. Dulles Intl Airport to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Portland. 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 into for flights to Portland from Washington, D.C. Dulles Intl?

    If you book a flight to Portland from Washington, D.C. Dulles Intl, you will be flying to Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland. There are 2 flights from Washington, D.C. Dulles Intl to Portland per day from 1 airline.

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

    Departing from Washington, D.C. Dulles Intl Airport to Portland, Maine will take you 3h 50m. Washington, D.C. Dulles Intl Airport and Portland, Maine are separated by a distance of 492 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Portland, Maine round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Portland, Maine round-trip from $208. United Airlines is currently priced 39% below the average price you’ll pay for this route.

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

    Consider Copa Airlines (92%), Avianca (87%) or Republic Airways (86%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Portland, Maine.

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

    On average you can expect to pay $292 for a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine. The cheapest flight overall is $173 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $189.

  • Can I find deals for flights from Dulles Intl to Portland that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Portland?

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

  • Can I find deals for business class flights from Dulles Intl to Portland?

    Yes. Cheapflights offers flight deals from Dulles Intl to Portland 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 Washington, D.C. Dulles Intl Airport to Portland, Maine?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $117). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in July is currently the most expensive (average of $167). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Auburn
Conway

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Top airline flying from Dulles Intl to Portland

Discover the top airline that operate flights from Dulles Intl to Portland. 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
United AirlinesCheapest$208Average$358FlexibilityNo cancel feeOn-time69%

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