HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$113+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PWM
Feb 3 — Feb 101
Tue 2/3
Tue 2/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Portland with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 Saturday or Wednesday and return on a Friday

Cheap 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 January 4, 2026.

This United Airlines deal was found by Cheapflights users on 1/2. 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 3/285:20 pmIAD - PWM
Nonstop1h 53mUnited Airlines
Wed 4/17:12 pmPWM - IAD
1 stop4h 13mUnited Airlines
Deal found 1/2$228
This United Airlines deal was found by Cheapflights users on 1/3. 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 1/175:10 pmIAD - PWM
Nonstop1h 44mUnited Airlines
Mon 1/193:12 pmPWM - IAD
1 stop6h 01mUnited Airlines
Deal found 1/3$229
This United Airlines deal was found by Cheapflights users on 1/3. 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 6/38:15 amIAD - PWM
1 stop5h 23mUnited Airlines
Sat 6/69:34 amPWM - IAD
Nonstop1h 58mUnited Airlines
Deal found 1/3$231
This United Airlines deal was found by Cheapflights users on 1/3. 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 1/315:10 pmIAD - PWM
Nonstop1h 44mUnited Airlines
Sat 2/72:31 pmPWM - IAD
Nonstop1h 59mUnited Airlines
Deal found 1/3$234
This Delta deal was found by Cheapflights users on 1/3. 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 1/215:26 pmIAD - PWM
2 stops6h 54mDelta
Wed 2/412:43 pmPWM - IAD
2 stops10h 23mDelta
Deal found 1/3$235
This Delta deal was found by Cheapflights users on 1/4. 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.
Sat 1/177:49 pmIAD - PWM
1 stop4h 10mDelta
Sun 1/186:00 amPWM - IAD
1 stop5h 43mDelta
Deal found 1/4$239
This United Airlines deal was found by Cheapflights users on 1/4. 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 5/810:10 pmIAD - PWM
Nonstop1h 49mUnited Airlines
Mon 5/117:06 pmPWM - IAD
Nonstop2h 00mUnited Airlines
Deal found 1/4$249
This Delta deal was found by Cheapflights users on 1/2. 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 1/237:49 pmIAD - PWM
1 stop4h 31mDelta
Mon 1/262:35 pmPWM - IAD
1 stop4h 34mDelta
Deal found 1/2$254
This United Airlines deal was found by Cheapflights users on 1/4. 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 1/2312:46 pmIAD - PWM
Nonstop1h 45mUnited Airlines
Sun 1/253:42 pmPWM - IAD
1 stop5h 31mUnited Airlines
Deal found 1/4$257
This Delta deal was found by Cheapflights users on 1/4. 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 2/106:00 amIAD - PWM
2 stops11h 16mDelta
Sat 2/147:30 amPWM - IAD
1 stop4h 14mDelta
Deal found 1/4$259
This United Airlines deal was found by Cheapflights users on 1/2. 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.
Tue 5/265:50 pmIAD - PWM
Nonstop1h 34mUnited Airlines
Sat 5/307:22 pmPWM - IAD
Nonstop1h 58mUnited Airlines
Deal found 1/2$264

Find 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 January 4, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$228
(United Airlines)

One-way from

$113
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$505

Good round-trip deal

$309 or less

Good one-way deal

$268 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Portland flights.
Search Deals
From Washington, D.C. Dulles Intl to Portland
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Portland
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Portland.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Portland.
Search Deals

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 January 4, 2026.
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

Fri 2/20

5:13 pm-12:18 am

2 stops7h 05m

Portland

Sun 2/22

6:30 am-11:44 am

1 stop5h 14m

$229

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 1/31

5:10 pm-6:54 pm

Nonstop1h 44m

Portland

Sat 2/7

2:31 pm-4:30 pm

Nonstop1h 59m

$234

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Tue 3/17

12:48 pm-2:32 pm

Nonstop1h 44m

Portland

Sat 3/21

7:08 pm-11:19 pm

1 stop4h 11m

$235

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 1/17

7:49 pm-11:59 pm

1 stop4h 10m

Portland

Tue 1/20

6:17 am-11:43 am

1 stop5h 26m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 1/23

7:49 pm-12:20 am

1 stop4h 31m

Portland

Sun 1/25

2:35 pm-7:09 pm

1 stop4h 34m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 1/17

7:49 pm-11:59 pm

1 stop4h 10m

Portland

Sun 1/18

6:00 am-11:43 am

1 stop5h 43m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 1/16

7:49 pm-12:20 am

1 stop4h 31m

Portland

Tue 1/20

6:17 am-11:43 am

1 stop5h 26m

$239

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 1/31

5:10 pm-6:54 pm

Nonstop1h 44m

Portland

Tue 2/3

11:12 am-4:25 pm

1 stop5h 13m

$259

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 2/1

5:26 pm-12:20 am

2 stops6h 54m

Portland

Sat 2/7

1:13 pm-11:06 pm

2 stops9h 53m

$265

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Fri 1/16

7:49 pm-12:20 am

1 stop4h 31m

Portland

Sun 1/18

6:00 am-11:43 am

1 stop5h 43m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 21 results
1
2
3

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 January.
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 January 2, 2026.

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 January 4, 2026.

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 21% 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 December 27, 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. Friday 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 January 4, 2026.
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
9,138 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,138 reviews
United Airlines
7.4
Good
9,138 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 1h 44m. 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 $214. United Airlines is currently priced 41% 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 Republic Airways (82%), United Airlines (70%) or Avianca (67%) 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 $350 for a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine. The cheapest flight overall is $224 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $209.

  • 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

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 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 January 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$361FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.