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Cheap Flights from Washington D.C. (IAD) to Portland (PWM)

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      Travellers and cabin class, 1 Adult, Economy
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      Compare Washington Dulles to Portland flight deals

      Find the cheapest month or even day of the year to fly to Portland

      Book the best Portland fare with no extra fees

      Flight deals from Washington Dulles to Portland

      Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Portland Airport? If you want to travel next month, return fares start from $323. Find the lowest prices on one-way and return tickets right here.
      Portland.$312 per passenger.Departing Wed, 30 Sep, returning Thu, 1 Oct.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 30 Sep, arriving in Portland.Inbound direct flight with United departs from Portland on Thu, 1 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $312, select.
      Portland.$312 per passenger.Departing Wed, 14 Oct, returning Tue, 20 Oct.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 14 Oct, arriving in Portland.Inbound direct flight with United departs from Portland on Tue, 20 Oct, arriving in Washington Dulles.Price includes taxes and charges.From $312, select.
      Portland.$323 per passenger.Departing Fri, 11 Sep, returning Tue, 15 Sep.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Fri, 11 Sep, arriving in Portland.Inbound indirect flight with United, departs from Portland on Tue, 15 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $323, select.
      Portland.$328 per passenger.Departing Wed, 2 Sep, returning Sun, 6 Sep.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 2 Sep, arriving in Portland.Inbound direct flight with United departs from Portland on Sun, 6 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $328, select.
      Portland.$352 per passenger.Departing Mon, 9 Nov, returning Thu, 12 Nov.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 9 Nov, arriving in Portland.Inbound direct flight with United departs from Portland on Thu, 12 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $352, select.
      Portland.$353 per passenger.Departing Sat, 31 Oct, returning Sat, 14 Nov.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Sat, 31 Oct, arriving in Portland.Inbound direct flight with United departs from Portland on Sat, 14 Nov, arriving in Washington Dulles.Price includes taxes and charges.From $353, select.
      Portland.$379 per passenger.Departing Thu, 26 Nov, returning Thu, 3 Dec.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Thu, 26 Nov, arriving in Portland.Inbound indirect flight with United, departs from Portland on Thu, 3 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $379, select.
      Portland.$408 per passenger.Departing Tue, 25 Aug, returning Sat, 29 Aug.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Tue, 25 Aug, arriving in Portland.Inbound direct flight with United departs from Portland on Sat, 29 Aug, arriving in Washington Dulles.Price includes taxes and charges.From $408, select.
      Portland.$409 per passenger.Departing Fri, 28 Aug, returning Tue, 1 Sep.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Fri, 28 Aug, arriving in Portland.Inbound direct flight with United departs from Portland on Tue, 1 Sep, arriving in Washington Dulles.Price includes taxes and charges.From $409, select.
      Portland.$415 per passenger.Departing Fri, 4 Dec, returning Sun, 6 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Fri, 4 Dec, arriving in Portland.Inbound indirect flight with Delta, departs from Portland on Sun, 6 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $415, select.
      Portland.$473 per passenger.Departing Mon, 12 Apr, returning Mon, 26 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 12 Apr, arriving in Portland.Inbound indirect flight with Delta, departs from Portland on Mon, 26 Apr, arriving in Washington Dulles.Price includes taxes and charges.From $473, select.
      Portland.$496 per passenger.Departing Sat, 6 Mar, returning Sat, 20 Mar.Return flight with United.Outbound indirect flight with United, departs from Washington Dulles on Sat, 6 Mar, arriving in Portland.Inbound indirect flight with United, departs from Portland on Sat, 20 Mar, arriving in Washington Dulles.Price includes taxes and charges.From $496, select.
      Portland.$503 per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Wed, 25 Nov, arriving in Portland.Inbound direct flight with United departs from Portland on Wed, 2 Dec, arriving in Washington Dulles.Price includes taxes and charges.From $503, select.
      Portland.$531 per passenger.Departing Mon, 22 Feb, returning Sun, 28 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 22 Feb, arriving in Portland.Inbound indirect flight with Delta, departs from Portland on Sun, 28 Feb, arriving in Washington Dulles.Price includes taxes and charges.From $531, select.
      Portland.$549 per passenger.Departing Mon, 3 May, returning Mon, 10 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Washington Dulles on Mon, 3 May, arriving in Portland.Inbound indirect flight with Delta, departs from Portland on Mon, 10 May, arriving in Washington Dulles.Price includes taxes and charges.From $549, select.
      Portland.$648 per passenger.Departing Mon, 3 May, returning Mon, 10 May.Return flight with United.Outbound direct flight with United departs from Washington Dulles on Mon, 3 May, arriving in Portland.Inbound direct flight with United departs from Portland on Mon, 10 May, arriving in Washington Dulles.Price includes taxes and charges.From $648, select.

      Find the cheapest month to fly from Washington Dulles to Portland

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Portland flights are currently cheapest in October.
      Aug
      from $408
      Sep
      from $323
      Oct
      from $312
      Nov
      from $352
      Dec
      from $415
      Jan
      Find prices
      Feb
      from $531
      Mar
      from $496
      Apr
      from $473
      May
      from $549
      Jun
      Find prices
      Jul
      Find prices

      Direct flights from Washington Dulles to Portland

      Avianca
      Copa
      United

      Washington Dulles to Portland: Alternative routes

      Compare routes from Washington Dulles to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

      Portland

      4km from central Portland
      ClosestCheapest
      from $312
      Search flights

      Portsmouth

      79km from central Portland
      Search flights

      Augusta

      82km from central Portland
      Search flights

      Washington D.C. to Portland: Flight information

      The things to know before you go.
      Cheapest flight found$312
      Cheapest month to flyOctober
      Average flight time1 hr, 46 mins
      Most popular airlineUnited
      Average flights per week44

      Finding cheap flights from Washington Dulles to Portland: Frequently asked questions

      The best price we found for a return flight from Washington Dulles to Portland is $312. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      1 hour and 46 minutes is the average flight time from Washington Dulles to Portland.
      United, Copa and Avianca fly direct from Washington Dulles to Portland.
      As of August 2026, there are 44 flights per week flying from Washington Dulles to Portland.
      The cheapest month to fly from Washington Dulles to Portland is usually October.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Portland Airport on Wednesday, 14 October 2026.
      Yes – the average flight time is 1 hour and 46 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portland but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, United offers the cheapest flight tickets to Portland.

      Travelling from Washington Dulles Airport (IAD) to Portland Airport (PWM): what you need to know

      • Around 1 hour 45 minutes is how long you can expect to be travelling on a direct flight from Washington Dulles Airport to Portland Airport.

      • Flights from IAD to PWM start from 08:15 — the earliest with United Airlines. The last service of the day is at 22:16 with United Airlines. In total, you can choose from 23 weekly Washington Dulles Airport to Portland Airport flights.

      • Give yourself enough time to catch your IAD to PWM flight. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

      • Travelling during a peak month such as July? Major public holidays and other popular periods can mean longer queues at security. Play things extra safe and get there up to four hours ahead of an international flight and two hours before a domestic departure.

      • Jetting into Portland (and then discovering more of the United States!) is a breeze with United. This popular airline offers direct flights from Washington Dulles Airport to Portland Airport.

      • The airline that passengers book most often on this route is United.

      • United is the most punctual carrier that operates IAD to PWM flights, with 78.95% of its services arriving on schedule.

      • We make it a breeze to book a flight with a stopover. To see all your options for tickets from Washington Dulles Airport to Portland Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to tour your chosen city. Popular stopovers between IAD and PWM include:

        • New York LaGuardia Airport

        • Philadelphia International Airport

        • Pittsburgh International Airport

      How to find the cheapest flights from Washington Dulles Airport (IAD) to Portland Airport (PWM)

      • Right now, $156 is the lowest price we've seen for a one-way Washington Dulles Airport to Portland Airport flight. The best price for a return plane ticket is $312. Remember that fares may change due to availability at the time of booking.

      • It's usually smart to book as early as possible if you want to get cheap tickets from IAD to PWM. That's because flight prices are based on demand, which tends to rise closer to departure.

      • The cheapest month for flights from Washington Dulles Airport to Portland Airport is May. Use the 'Whole month' tool to see the lowest airfares if you have a flexible schedule.

      • Picking up cheap flights from IAD to PWM is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll get in touch as soon as there's a better deal.

      • Choose your ideal departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Washington Dulles Airport to Portland Airport.

      Handy information about Washington Dulles Airport (IAD)

      • IAD is located at 1 Saarinen Circle.

      • Of the departures from Washington Dulles Airport, 77% land on time at their destination.

      • Central Washington DC to Washington Dulles Airport is approximately 40 kilometres. Depending on traffic, it'll take you about 45 minutes to get there if you're ride-sharing, catching a taxi or driving.

      • The trip on public transport takes about 1 hour 10 minutes.

      • Looking for a convenient hotel near IAD? If you're catching an early flight from Washington Dulles Airport to Portland Airport, these accommodation options will have you sleeping moments from your departure lounge:

      Arriving at Portland Airport (PWM)

      When to fly to Portland Airport (PWM)

      • Have a think about your dates before booking your flight from Washington Dulles Airport to Portland Airport. Portland in high season buzzes, but rates are generally higher and attractions can get crowded. Plan your visit in the low season if you want a quieter vibe.

      • Lock in your flight from Washington Dulles Airport to Portland Airport for July if you want to explore Portland during its warmest month. Expect temperatures of between 14ºC (57ºF) and 25ºC (77ºF).

      • If you'd rather travel in cooler conditions, search for a cheap ticket from IAD to PWM in January. Temperatures average between -10ºC (14ºF) and 3ºC (37ºF) then.

      Explore more of the United States

      • Portland has plenty to offer, but there are so many other corners of the United States just waiting to be discovered. Around 451 kilometres south-west of Portland, a visit to New York will keep you on the move. Start with leading sights like Central Park, Statue of Liberty and Metropolitan Museum of Art.

      • Around 161 kilometres south-west of Portland, Boston is another essential stop in the United States. Experience the best of this destination with a visit to Museum of Fine Arts Boston, Freedom Trail and USS Constitution Museum.

      Plan smart, explore more

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      Plan the rest of your trip from Washington D.C. to Portland

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.