$106 Cheap Flights from Washington (IAD) to Portland (PWM)

View $106 flight on Sat, Jun 7, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Portland (IAD-PWM)

Prices were available within the past 7 days and start at $106 for one-way flights and $170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, May 15 - Sun, May 18
IAD
Washington
PWM
Portland
$170 Roundtrip, found 1 day ago
$170
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 15 from Washington to Portland, returning Sun, May 18, priced at $170 found 1 day ago
Frontier Airlines
Fri, May 9 - Thu, May 15
IAD
Washington
PWM
Portland
$180 Roundtrip, found 16 hours ago
$180
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, May 9 from Washington to Portland, returning Thu, May 15, priced at $180 found 16 hours ago
Delta
Wed, Aug 27 - Sat, Aug 30
IAD
Washington
PWM
Portland
$189 Roundtrip, found 7 hours ago
$189
Roundtrip
found 7 hours ago
Select Delta flight, departing Wed, Aug 27 from Washington to Portland, returning Sat, Aug 30, priced at $189 found 7 hours ago
Frontier Airlines
Fri, May 9 - Sun, May 11
IAD
Washington
PWM
Portland
$190 Roundtrip, found 16 hours ago
$190
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, May 9 from Washington to Portland, returning Sun, May 11, priced at $190 found 16 hours ago
Frontier Airlines
Thu, May 15 - Sat, May 31
IAD
Washington
PWM
Portland
$191 Roundtrip, found 3 days ago
$191
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, May 15 from Washington to Portland, returning Sat, May 31, priced at $191 found 3 days ago
Delta
Sat, May 3 - Tue, May 6
IAD
Washington
PWM
Portland
$199 Roundtrip, found 6 days ago
$199
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, May 3 from Washington to Portland, returning Tue, May 6, priced at $199 found 6 days ago
Frontier Airlines
Sun, May 18 - Sat, May 24
IAD
Washington
PWM
Portland
$200 Roundtrip, found 12 hours ago
$200
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from Washington to Portland, returning Sat, May 24, priced at $200 found 12 hours ago
Frontier Airlines
Fri, May 9 - Sat, May 17
IAD
Washington
PWM
Portland
$210 Roundtrip, found 16 hours ago
$210
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, May 9 from Washington to Portland, returning Sat, May 17, priced at $210 found 16 hours ago
United
Sun, Sep 21 - Sat, Sep 27
IAD
Washington
PWM
Portland
$239 Roundtrip, found 1 day ago
$239
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 21 from Washington to Portland, returning Sat, Sep 27, priced at $239 found 1 day ago
American Airlines
Tue, Jun 3 - Sat, Jun 7
IAD
Washington
PWM
Portland
$265 Roundtrip, found 5 hours ago
$265
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Jun 3 from Washington to Portland, returning Sat, Jun 7, priced at $265 found 5 hours ago
Flights from Washington (IAD) to Portland (PWM)
Origin airport
Washington Dulles Intl.
Destination airport
Portland Intl. Jetport
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$170
Distance
492 mi

Washington to Portland Flights

The cheapest times to fly from Washington to Portland

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Portland are during the month of May. You can find some of the cheapest flights from Washington to Portland with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Washington to Portland

Sunday is one of the best days to book for cheap flights from Washington to Portland: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Washington to Portland

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $106 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Portland flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Portland airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM) cost?
You can pick up cheap return flights starting from $169 from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving IAD on May 21 2025 and touching down at PWM. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from IAD to PWM?
The cheapest flights from IAD to PWM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
Fly directly from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM) on a United Airlines flight.
What is the cheapest airline that flies from IAD to PWM?
At the moment, the cheapest carrier offering one-way flights from IAD to PWM is United. You can book a seat on this route from $109. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on June 10 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
On average, just 1 nonstop flight departs each day from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM). Want additional options? Use our filter tool to find flights with layovers and squeeze another destination into your itinerary.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
More passengers fly between IAD and PWM at 8 AM than at any other time. Looking to skip the crowds? Consider flying outside peak hours and you could save on your ticket as well.
What day of the week has the most flights from IAD to PWM?
Friday offers the most flights from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM). Consider traveling on this day and you’ll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
The earliest flight leaving from Washington Dulles Intl. Airport (IAD) is at around 8:45AM UTC-5. Catch this flight and you’ll arrive at Portland Intl. Jetport Airport (PWM) at approximately 10:28AM UTC-5. The entire trip takes 1h 43m.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
Flights from IAD to PWM have an average travel time of 1 hour and 43 minutes. The total distance between these two airports is 490 mi.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Portland from Washington Dulles Intl. Airport (IAD)?
Portland Intl. Jetport Airport (PWM) is the only airport in Portland with direct flights from Washington Dulles Intl. Airport (IAD). Compare the available options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM) last-minute?
Booking your flight from IAD to PWM right before your trip is typically more expensive. But if there’s some wiggle room with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book an IAD to PWM flight and hotel package?
Booking an IAD to PWM flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Portland Intl. Jetport Airport (PWM)?
You can usually reschedule or cancel your IAD to PWM flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.