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255 € 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 255 €. Find the lowest prices on one-way and return tickets right here.
Washington D.C..255 € per passenger.Departing Tue, 11 Aug, returning Mon, 17 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Portland on Tue, 11 Aug, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Mon, 17 Aug, arriving in Portland.Price includes taxes and charges.From 255 €, select.
Washington D.C..309 € per passenger.Departing Tue, 28 Jul, returning Sat, 1 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Portland on Tue, 28 Jul, arriving in Washington Dulles.Inbound indirect flight with Frontier Airlines, departs from Washington Dulles on Sat, 1 Aug, arriving in Portland.Price includes taxes and charges.From 309 €, select.
Washington D.C..311 € per passenger.Departing Sun, 27 Sep, returning Sat, 3 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Sun, 27 Sep, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Sat, 3 Oct, arriving in Portland.Price includes taxes and charges.From 311 €, select.
Washington D.C..311 € per passenger.Departing Fri, 24 Jul, returning Mon, 27 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Fri, 24 Jul, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Mon, 27 Jul, arriving in Portland.Price includes taxes and charges.From 311 €, select.
Washington D.C..311 € per passenger.Departing Thu, 1 Oct, returning Wed, 7 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Thu, 1 Oct, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Wed, 7 Oct, arriving in Portland.Price includes taxes and charges.From 311 €, select.
Washington D.C..311 € per passenger.Departing Mon, 28 Sep, returning Wed, 30 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Mon, 28 Sep, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Wed, 30 Sep, arriving in Portland.Price includes taxes and charges.From 311 €, select.
Washington D.C..312 € per passenger.Departing Wed, 19 Aug, returning Wed, 2 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Wed, 19 Aug, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Wed, 2 Sep, arriving in Portland.Price includes taxes and charges.From 312 €, select.
Washington D.C..312 € per passenger.Departing Fri, 8 Jan, returning Sun, 10 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Fri, 8 Jan, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Sun, 10 Jan, arriving in Portland.Price includes taxes and charges.From 312 €, select.
Washington D.C..312 € per passenger.Departing Thu, 12 Nov, returning Sun, 15 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Thu, 12 Nov, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Sun, 15 Nov, arriving in Portland.Price includes taxes and charges.From 312 €, select.
Washington D.C..312 € per passenger.Departing Mon, 26 Oct, returning Mon, 9 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Mon, 26 Oct, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Mon, 9 Nov, arriving in Portland.Price includes taxes and charges.From 312 €, select.
Washington D.C..313 € per passenger.Departing Mon, 15 Feb, returning Fri, 19 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Mon, 15 Feb, arriving in Washington Dulles.Inbound indirect flight with Delta, departs from Washington Dulles on Fri, 19 Feb, arriving in Portland.Price includes taxes and charges.From 313 €, select.
Washington D.C..382 € per passenger.Departing Sat, 10 Oct, returning Sat, 17 Oct.Return flight with United.Outbound direct flight with United departs from Portland on Sat, 10 Oct, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sat, 17 Oct, arriving in Portland.Price includes taxes and charges.From 382 €, select.
Washington D.C..382 € per passenger.Departing Fri, 14 Aug, returning Mon, 17 Aug.Return flight with United.Outbound direct flight with United departs from Portland on Fri, 14 Aug, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Mon, 17 Aug, arriving in Portland.Price includes taxes and charges.From 382 €, select.
Washington D.C..382 € per passenger.Departing Thu, 5 Nov, returning Tue, 10 Nov.Return flight with United.Outbound direct flight with United departs from Portland on Thu, 5 Nov, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 10 Nov, arriving in Portland.Price includes taxes and charges.From 382 €, select.
Washington D.C..383 € per passenger.Departing Tue, 28 Jul, returning Tue, 25 Aug.Return flight with United.Outbound direct flight with United departs from Portland on Tue, 28 Jul, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Tue, 25 Aug, arriving in Portland.Price includes taxes and charges.From 383 €, select.
Washington D.C..390 € per passenger.Departing Sun, 27 Sep, returning Sat, 3 Oct.Return flight with United.Outbound direct flight with United departs from Portland on Sun, 27 Sep, arriving in Washington Dulles.Inbound direct flight with United departs from Washington Dulles on Sat, 3 Oct, arriving in Portland.Price includes taxes and charges.From 390 €, 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 311 €
Aug
from 255 €
Sep
from 311 €
Oct
from 311 €
Nov
from 312 €
Dec
from 549 €
Jan
from 312 €
Feb
from 313 €
Mar
from 506 €
Apr
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May
Find prices
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 227 €
Search flights

Washington Dulles

37km from central Washington D.C.
from 255 €
Search flights

Baltimore Washington International

44km from central Washington D.C.
Cheapest
from 186 €
Search flights

Portland to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight found255 €
Cheapest month to flyAugust
Average flight time4 hrs, 56 mins
Most popular airlineUnited
Average flights per week12

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 255 €. 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.
4 hours and 56 minutes is the average flight time from Portland to Washington Dulles.
United and Brussels Airlines fly direct from Portland to Washington Dulles.
As of July 2026, there are 12 flights per week flying from Portland to Washington Dulles.
The cheapest month to fly from Portland to Washington Dulles is usually August.
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 Tuesday, 11 August 2026.
Yes – the average flight time is 4 hours and 56 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, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

Flying from Portland Airport (PDX) to Washington Dulles Airport (IAD): what you need to know

  • Around 5 hours is how long you can expect to be in the air on a direct flight from Portland Airport to Washington Dulles Airport.

  • Washington DC is three hours ahead of Portland and observes the UTC-5 timezone.

  • Take your pick of five weekly Portland Airport to Washington Dulles Airport flights. The 08:00 departure with United Airlines is the earliest available. United Airlines operates the last service of the day at 23:38.

  • To ensure you catch your PDX to IAD flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • Travelling during a peak time like July? Public holidays and other high seasons can lead to longer queues at check-in and security. Play it safe and get there up to four hours before international flights and two hours before a domestic departure.

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

  • Most passengers choose to travel with United on this route.

  • United is the most punctual carrier operating PDX to IAD flights.

  • If you'd like to explore another city along the way, simply deselect 'Direct flights only' when searching for your ticket from Portland Airport to Washington Dulles Airport. Here are the most popular stopovers between PDX and IAD:

    • Chicago O'Hare International Airport

    • Denver International Airport

    • Minneapolis St Paul Airport

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

  • Right now, 139 € is the lowest price we've found for a one-way Portland Airport to Washington Dulles Airport flight. The best price for a return ticket is 255 €. Bear in mind that fares could change due to demand at the time of booking.

  • Book one month before flying. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from PDX to IAD.

  • June is the cheapest month for flights from Portland Airport to Washington Dulles Airport. If you'd like to fly at a different time of year, the 'Whole month' tool will show you the lowest prices for each month.

  • You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll send you an update the moment there's a change in price on cheap flights from PDX to IAD.

  • Pick your preferred arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to find the best deals on flights from Portland Airport to Washington Dulles Airport.

Handy information about Portland Airport (PDX)

  • You'll find PDX at 7000 NE Airport Way.

  • Portland Airport gets high marks for its on-time performance. 83% of flights that depart PDX arrive at their destination on time.

  • To get to Portland Airport from central Portland, it'll take around 20 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 19 kilometres from the airport to the city centre.

  • The trip when using public transport will take about 40 minutes.

  • Booked an early flight from Portland Airport to Washington Dulles Airport? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by choosing one of these stays close to PDX:

Arriving at Washington Dulles Airport (IAD)

When to fly to Washington Dulles Airport (IAD)

  • It's time to plan your dates for your flight from Portland Airport to Washington Dulles Airport. July is the most popular month to head to Washington DC. If you prefer a more low-key vibe, go in February.

  • The warmest month in Washington DC is July, with the temperature ranging between 19ºC (66ºF) and 33ºC (91ºF). Lock in your flights from Portland Airport to Washington Dulles Airport in this month if you enjoy this type of weather.

  • Search for cheap tickets from PDX to IAD in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around 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 more of the United States. Travel about 322 kilometres north-east to New York to check off its leading attractions. From Central Park to Statue of Liberty and Metropolitan Museum of Art, there's plenty to keep you busy.

  • Around 193 kilometres north-east of Washington DC, Philadelphia is another essential stop in the United States. Experience major highlights starting with 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.