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Portland

$144+ Cheap flights from Dulles Intl (IAD) to Portland, ME (PWM)

IAD — PWM
Sep 30 — Oct 71
Wed 9/30
Wed 10/7
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 Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Dulles Intl to Portland

Cheapest flights from Dulles Intl to Portland

Sat 9/266:26 pm -
1 stop5h 30m
Thu 10/16:02 am -
1 stop5h 43m
Deal found 8/28$277
Sun 11/110:13 pm -
Nonstop1h 46m
Sat 11/73:41 pm -
1 stop5h 49m
Deal found 8/27$278
Sat 9/2610:10 pm -
Nonstop1h 49m
Wed 9/305:15 am -
Nonstop1h 52m
Deal found 8/30$279
Sat 9/1910:10 pm -
Nonstop1h 49m
Sun 9/205:15 am -
Nonstop1h 52m
Deal found 8/26$280
Sat 10/36:26 pm -
1 stop5h 30m
Wed 10/76:28 am -
2 stops10h 00m
Deal found 8/27$282
Mon 9/2110:10 pm -
Nonstop1h 49m
Fri 9/256:00 am -
1 stop5h 25m
Deal found 8/26$285
Fri 10/236:32 pm -
1 stop5h 38m
Mon 10/266:03 am -
1 stop5h 47m
Deal found 8/27$288
Fri 10/26:26 pm -
1 stop5h 30m
Tue 10/66:28 am -
2 stops10h 00m
Deal found 8/26$293
Tue 9/1512:47 pm -
Nonstop1h 51m
Tue 9/225:15 am -
Nonstop1h 52m
Deal found 8/28$294
Thu 10/226:32 pm -
1 stop5h 38m
Mon 10/266:03 am -
1 stop5h 47m
Deal found 8/27$295
Thu 11/125:50 pm -
1 stop5h 31m
Mon 11/167:30 pm -
Nonstop1h 58m
Deal found 8/27$297

Find flight deals from Dulles Intl to Portland

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$277
(Delta)

One-way from

$144
(Delta)

Popular in

February

Cheapest in

November

Average price

$406

Good round-trip deal

$327 or less

Good one-way deal

$185 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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Highest demand for flights based on searches. 7% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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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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Cheapflights Fare Finder

 
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 Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Sat 10/3

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Tue 10/6

7:25 pm-9:20 pm

Nonstop1h 55m

$279
Quickest round-trip

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Sat 9/26

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Wed 9/30

5:15 am-7:07 am

Nonstop1h 52m

$279

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Sat 9/26

6:26 pm-11:56 pm

1 stop5h 30m

Portland

Wed 9/30

1:59 pm-11:14 pm

2 stops9h 15m

$304

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Wed 10/14

6:05 am-11:57 am

1 stop5h 52m

Portland

Sun 10/18

6:04 am-11:50 am

1 stop5h 46m

$314

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Thu 11/12

6:00 am-3:16 pm

2 stops9h 16m

Portland

Sun 11/15

6:00 am-11:52 am

1 stop5h 52m

$344

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Fri 10/2

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Sun 10/4

5:15 am-7:07 am

Nonstop1h 52m

$350

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Fri 9/25

5:50 pm-11:28 pm

1 stop5h 38m

Portland

Wed 9/30

10:43 am-4:23 pm

1 stop5h 40m

$401

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Mon 9/14

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Fri 9/18

6:53 pm-10:59 pm

1 stop4h 06m

$406

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Fri 9/18

10:10 pm-11:59 pm

Nonstop1h 49m

Portland

Sun 9/20

6:00 am-11:49 am

1 stop5h 49m

$424

Washington, D.C.Portland

IAD Washington, D.C. Dulles Intl - PWM Portland

IADPWM

Washington, D.C. Dulles Intl

Sat 9/26

8:33 am-1:51 pm

1 stop5h 18m

Portland

Sun 9/27

5:15 am-7:07 am

Nonstop1h 52m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/27

Showing 1-10 of 17 resultsSorted by cheapest first
1
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Compare providers for flights from Dulles Intl to Portland

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 August.
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

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?

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?

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. Thursday 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?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Portland, Maine flights typically cost between $289 and $380 in September.
The cheapest round-trip price found within the last 5 days was $277 on Delta (Sep 26-Oct 1).

Reviews of airlines servicing Portland

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
10,146 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.7

Boarding

7.7

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
10,146 reviews
United Airlines
7.4
Good
10,146 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Food

6.7

Boarding

7.7

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

  • 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 $213. United Airlines is currently priced 42% 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 (92%), United Airlines (86%) or Republic Airways (85%) 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 $368 for a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine. The cheapest flight overall is $108 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $279.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Dulles Intl to Portland

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$213Average$368FlexibilityNo cancel feeOn-time69%

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