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$140+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PWM
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Portland are usually found in May or December, 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 August 1, 2025.

Round-trip from

$225
(Delta)

One-way from

$140
(Delta)

Popular in

April

Cheapest in

May

Average price

$410

Good round-trip deal

$336 or less

Good one-way deal

$296 or less
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, 2% 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 August 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 August 1, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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.
Wed 8/208:23 pmIAD - PWM
1 stop4h 25mDelta
Sat 8/236:31 amPWM - IAD
1 stop13h 12mDelta
Deal found 7/30$225
This United Airlines deal was found by Cheapflights users on 7/31. 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 8/1610:14 pmIAD - PWM
Nonstop1h 45mUnited Airlines
Wed 8/206:41 pmPWM - IAD
1 stop4h 18mUnited Airlines
Deal found 7/31$226
This American Airlines deal was found by Cheapflights users on 8/1. 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 8/169:14 amIAD - PWM
1 stop7h 48mAmerican Airlines
Fri 8/223:53 pmPWM - IAD
1 stop7h 03mAmerican Airlines
Deal found 8/1$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 August 1, 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

Wed 8/20

8:23 pm-12:48 am

1 stop4h 25m

Portland

Sat 8/23

6:31 am-7:43 pm

1 stop13h 12m

$225

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 8/16

10:14 pm-11:59 pm

Nonstop1h 45m

Portland

Wed 8/20

6:41 pm-10:59 pm

1 stop4h 18m

$226

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sat 8/16

9:14 am-5:02 pm

1 stop7h 48m

Portland

Fri 8/22

3:53 pm-10:56 pm

1 stop7h 03m

$259

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 8/24

8:23 pm-12:48 am

1 stop4h 25m

$140

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 9/14

8:15 am-9:58 am

Nonstop1h 43m

$150

Washington, D.C.Portland

IAD - PWM

IADPWM

Washington, D.C. Dulles Intl

Sun 12/7

5:54 pm-10:24 pm

1 stop4h 30m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 July 25, 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $296). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in July is currently the most expensive (average of $394). 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 August 1, 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 in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 26% 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 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. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Portland, Maine

Explore weekly flight availability from Dulles Intl to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 1, 2025.

The most flights from IAD to PWM are scheduled on a Wednesday (6 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 August 1, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American 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.
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.9
Fair
3,239 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 4 flights from Washington, D.C. Dulles Intl to Portland per day from 1 airline.

  • What are the cheapest airlines flying 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 $225. Other airlines that can offer you cheap pricing are United Airlines, from $226, and American Airlines, from $259. Delta is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Portland, Maine one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $140. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Portland, Maine for a low price.

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

    Consider GoJet (100%), CommutAir (93%) or Copa Airlines (90%) 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 $424 for a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine. The cheapest flight overall is $149 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $185.

  • 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland, Maine (average of $296). Flying from Washington, D.C. Dulles Intl Airport to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$222Average$359FlexibilityNo cancel feeOn-time69%

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