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Portland

$165+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PWM
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
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 January, booked 67 days in advance, depart on a Wednesday or Saturday and return on a Thursday

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 July 18, 2026.

This Delta deal was found by Cheapflights users on 7/13. 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 8/67:19 pm
IAD
-
PWM
1 stop5h 40m
Delta
Wed 8/126:00 am
PWM
-
IAD
1 stop5h 49m
Delta
Deal found 7/13$268
This Delta deal was found by Cheapflights users on 7/13. 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.
Mon 8/37:19 pm
IAD
-
PWM
1 stop5h 40m
Delta
Wed 8/126:00 am
PWM
-
IAD
1 stop5h 49m
Delta
Deal found 7/13$269
This United Airlines deal was found by Cheapflights users on 7/13. 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 10/1410:10 pm
IAD
-
PWM
Nonstop1h 49m
United Airlines
Sun 10/185:15 am
PWM
-
IAD
Nonstop1h 52m
United Airlines
Deal found 7/13$271
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/158:35 am
IAD
-
PWM
1 stop5h 20m
United Airlines
Thu 9/245:15 am
PWM
-
IAD
Nonstop1h 52m
United Airlines
Deal found 7/17$272
This Delta deal was found by Cheapflights users on 7/14. 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 9/1212:18 pm
IAD
-
PWM
2 stops9h 07m
Delta
Wed 9/236:00 am
PWM
-
IAD
1 stop5h 31m
Delta
Deal found 7/14$273
This Delta deal was found by Cheapflights users on 7/17. 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 9/96:10 am
IAD
-
PWM
2 stops10h 39m
Delta
Thu 9/176:02 am
PWM
-
IAD
1 stop5h 43m
Delta
Deal found 7/17$274
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/410:10 pm
IAD
-
PWM
Nonstop1h 41m
United Airlines
Tue 8/116:53 pm
PWM
-
IAD
1 stop4h 06m
United Airlines
Deal found 7/14$276
This United Airlines deal was found by Cheapflights users on 7/14. 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 7/298:25 am
IAD
-
PWM
1 stop5h 00m
United Airlines
Wed 8/55:15 am
PWM
-
IAD
Nonstop1h 45m
United Airlines
Deal found 7/14$277
This Delta deal was found by Cheapflights users on 7/15. 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 8/53:03 pm
IAD
-
PWM
1 stop8h 10m
Delta
Sat 8/156:00 am
PWM
-
IAD
1 stop5h 49m
Delta
Deal found 7/15$278
This Delta deal was found by Cheapflights users on 7/17. 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 9/1212:18 pm
IAD
-
PWM
2 stops9h 07m
Delta
Tue 9/151:59 pm
PWM
-
IAD
2 stops9h 15m
Delta
Deal found 7/17$279
This United Airlines deal was found by Cheapflights users on 7/15. 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 9/115:45 pm
IAD
-
PWM
1 stop5h 47m
United Airlines
Sat 9/125:15 am
PWM
-
IAD
Nonstop1h 52m
United Airlines
Deal found 7/15$280
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/55:30 pm
IAD
-
PWM
Nonstop1h 48m
United Airlines
Tue 9/86:53 pm
PWM
-
IAD
1 stop4h 06m
United Airlines
Deal found 7/13$282

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 July 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$268
(Delta)

One-way from

$165
(Kiwi.com)

Popular in

February

Cheapest in

November

Average price

$460

Good round-trip deal

$317 or less

Good one-way deal

$234 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. 6% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 18, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Thu 8/20

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Thu 8/27

7:35 pm-9:30 pm

Nonstop1h 55m

$277

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Wed 9/9

6:26 pm-11:56 pm

1 stop5h 30m

Portland

Sat 9/19

6:02 am-11:45 am

1 stop5h 43m

$278

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 11/1

8:20 am-9:59 am

Nonstop1h 39m

Portland

Wed 11/4

9:46 am-11:47 am

Nonstop2h 01m

$289

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Thu 8/27

8:20 am-10:04 am

Nonstop1h 44m

Portland

Sun 8/30

5:52 am-7:35 am

Nonstop1h 43m

$294

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Wed 9/2

8:20 am-10:04 am

Nonstop1h 44m

Portland

Thu 9/3

9:49 am-11:41 am

Nonstop1h 52m

$309
Quickest round-trip

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Tue 8/4

10:10 pm-11:51 pm

Nonstop1h 41m

Portland

Thu 8/6

5:15 am-7:00 am

Nonstop1h 45m

$343

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Thu 10/15

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Sun 10/18

5:15 am-7:07 am

Nonstop1h 52m

$346

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Tue 7/28

10:10 pm-11:51 pm

Nonstop1h 41m

Portland

Sat 8/1

5:15 am-7:00 am

Nonstop1h 45m

$349

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 8/30

12:47 pm-2:38 pm

Nonstop1h 51m

Portland

Wed 9/2

6:53 pm-10:59 pm

1 stop4h 06m

$369

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 8/15

5:30 pm-7:17 pm

Nonstop1h 47m

Portland

Sun 8/16

5:52 am-7:35 am

Nonstop1h 43m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 21 resultsSorted by cheapest first
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 July.
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 Washington, D.C. Dulles Intl Airport-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Portland, Maine flight deals on Cheapflights vs. FlightHub >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 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 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?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Portland, Maine is 66 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $254). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in February is currently the most expensive (average of $532). 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 July 18, 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 in the morning tend to be the most expensive. A flight at noon could potentially save you up to 19% 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 July 11, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Portland, Maine flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday afternoons 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 Washington, D.C. Dulles Intl Airport to Portland, Maine?

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 July 18, 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
10,006 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,006 reviews
United Airlines
7.4
Good
10,006 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 5 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 49m. 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 $212. United Airlines is currently priced 43% 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 GoJet (100%), Avianca (93%) or United Airlines (91%) 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 $346 for a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine. The cheapest flight overall is $152 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $217.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $254). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in February is currently the most expensive (average of $532). 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
Lewiston
Brunswick
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 July 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$212Average$377FlexibilityNo cancel feeOn-time69%

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