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Cheap Flights from Portland to Washington Dulles

Compare Portland to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Portland to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Washington Dulles Airport? If you want to travel next month, return fares start from R 3,702. Find the lowest prices on one-way and return tickets right here.
Washington D.C..R 1,746 per passenger.Departing Mon, 10 Aug.One-way flight with United.Outbound direct flight with United departs from Portland on Mon, 10 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 1,746, select.
Washington D.C..R 2,053 per passenger.Departing Sat, 10 Oct.One-way flight with United.Outbound direct flight with United departs from Portland on Sat, 10 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 2,053, select.
Washington D.C..R 2,054 per passenger.Departing Tue, 10 Nov.One-way flight with United.Outbound direct flight with United departs from Portland on Tue, 10 Nov, arriving in Washington Dulles.Price includes taxes and charges.From R 2,054, select.
Washington D.C..R 2,057 per passenger.Departing Sat, 25 Jul.One-way flight with United.Outbound direct flight with United departs from Portland on Sat, 25 Jul, arriving in Washington Dulles.Price includes taxes and charges.From R 2,057, select.
Washington D.C..R 2,063 per passenger.Departing Wed, 9 Sep.One-way flight with United.Outbound direct flight with United departs from Portland on Wed, 9 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 2,063, select.
Washington D.C..R 4,542 per passenger.Departing Mon, 28 Dec.One-way flight with United.Outbound direct flight with United departs from Portland on Mon, 28 Dec, arriving in Washington Dulles.Price includes taxes and charges.From R 4,542, select.

Find the cheapest month to fly from Portland to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Washington Dulles flights are currently cheapest in August.
Jul
from R 2,057
Aug
from R 1,746
Sep
from R 2,063
Oct
from R 2,053
Nov
from R 2,054
Dec
from R 4,542
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Direct flights from Portland to Washington Dulles

Portland to Washington Dulles: Alternative routes

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

Washington Ronald Reagan

5km from central Washington D.C.
Closest
from R 1,840
Search flights

Washington Dulles

37km from central Washington D.C.
Cheapest
from R 1,746
Search flights

Baltimore Washington International

44km from central Washington D.C.
from R 2,053
Search flights

Portland to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR 1,746
Cheapest month to flyAugust
Average flight time1 hr, 55 mins
Most popular airlineUnited
Average flights per week58

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

The best price we found for a return flight from Portland to Washington Dulles is R 3,421. 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 55 minutes is the average flight time from Portland to Washington Dulles.
United, Republic Airways and GoJet Airlines fly direct from Portland to Washington Dulles.
As of July 2026, there are 58 flights per week flying from Portland to Washington Dulles.
The cheapest month to fly from Portland to Washington Dulles is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Washington Dulles Airport on Thursday, 10 September 2026.
Yes – the average flight time is 1 hour and 55 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 Washington Dulles 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 Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to Washington Dulles.

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

  • The average duration of a direct flight from Portland Airport to Washington Dulles Airport is 1 hour 55 minutes.

  • Portland and Washington DC are in the same timezone, UTC-5.

  • You can choose from 23 weekly Portland Airport to Washington Dulles Airport flights. The 05:30 departure with United Airlines is the earliest flight you can take. United Airlines operates the latest service of the day at 19:26.

  • To ensure you get on your PWM to IAD flight, leave plenty of time to navigate the airport and find your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • Longer lines at check-in and security are more likely if you're jetting off during high season, so allow some extra breathing space. A good rule of thumb for peak times? Arrive up to four hours early for international flights and at least two hours for domestic departures.

  • United is your gateway to discovering Washington DC (and perhaps some other exciting parts of the United States!). Check out the direct flights from Portland Airport to Washington Dulles Airport offered by this popular airline.

  • The airline with the highest number of bookings on this route is United.

  • United leads the way as the most punctual carrier for PWM to IAD flights, with 81.21% of services arriving as scheduled.

  • Think about adding a stopover when booking your ticket from Portland Airport to Washington Dulles Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Check out these options between PWM and IAD:

    • New York Newark Airport

    • New York LaGuardia Airport

    • Philadelphia International Airport

Handy information about Portland Airport (PWM)

  • PWM is located at 1001 Westbrook Street.

  • Of the departures from Portland Airport, 79% arrive as scheduled at their destination.

  • Portland Airport is around 8 kilometres from central Portland. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.

  • Taking public transport? You can expect a journey time of around 30 minutes.

  • Searching for a convenient hotel close to PWM? If you've booked an early flight from Portland Airport to Washington Dulles Airport, these stays will have you moments from check-in:

Arriving at Washington Dulles Airport (IAD)

Getting from Washington Dulles Airport (IAD) to central Washington DC

  • IAD is located at 1 Saarinen Circle.

  • Washington Dulles Airport is approximately 40 kilometres from the centre of Washington DC. Driving there takes about 45 minutes.

  • It'll take around 1 hour 10 minutes to get there by public transport.

When to fly to Washington Dulles Airport (IAD)

  • July is the busiest month for flights from Portland Airport to Washington Dulles Airport. For a quieter experience, head to Washington DC in February.

  • Lock in your flight from Portland Airport to Washington Dulles Airport for July if you want to go to Washington DC during its warmest month. Expect temperatures of between 19ºC (66ºF) and 33ºC (91ºF).

  • Search for cheap tickets from PWM to IAD in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

Explore more of the United States

  • You've done Washington DC, now it's time to discover other parts of the United States. Journey around 322 kilometres north-east to New York to tick off its leading attractions. From Central Park to Statue of Liberty and Metropolitan Museum of Art, there's plenty to keep you busy.

  • Philadelphia is another essential stop in the United States and is around 193 kilometres north-east of Washington DC. No trip is complete without dropping by Independence Hall, Liberty Bell and Philadelphia Museum of Art.

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

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