CA $216 Cheap Flights from Portland (PDX) to Washington (IAD)

View CA $216 flight on Sat, Sep. 6, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Washington Dulles International Airport (IAD)

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Cheap flights from Portland (PDX) to Washington (IAD)

Prices were available within the past 7 days and start at CA $216 for one-way flights and CA $430 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep. 6 - Sat, Sep. 13
PDX
Portland
IAD
Washington
CA $430 Roundtrip, found 3 days ago
CA $430
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 6 from Portland to Washington, returning Sat, Sep. 13, priced at CA $430 found 3 days ago
Alaska Airlines
Mon, Sep. 15 - Thu, Sep. 18
PDX
Portland
IAD
Washington
CA $433 Roundtrip, found 6 days ago
CA $433
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Sep. 15 from Portland to Washington, returning Thu, Sep. 18, priced at CA $433 found 6 days ago
Delta
Sun, Sep. 14 - Thu, Sep. 18
PDX
Portland
IAD
Washington
CA $466 Roundtrip, found 6 days ago
CA $466
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Sep. 14 from Portland to Washington, returning Thu, Sep. 18, priced at CA $466 found 6 days ago
Alaska Airlines
Sat, Sep. 6 - Sat, Sep. 13
PDX
Portland
IAD
Washington
CA $486 Roundtrip, found 3 days ago
CA $486
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 6 from Portland to Washington, returning Sat, Sep. 13, priced at CA $486 found 3 days ago
Alaska Airlines
Mon, Sep. 15 - Thu, Sep. 18
PDX
Portland
IAD
Washington
CA $489 Roundtrip, found 6 days ago
CA $489
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Sep. 15 from Portland to Washington, returning Thu, Sep. 18, priced at CA $489 found 6 days ago
Delta
Sun, Sep. 14 - Thu, Sep. 18
PDX
Portland
IAD
Washington
CA $522 Roundtrip, found 6 days ago
CA $522
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Sep. 14 from Portland to Washington, returning Thu, Sep. 18, priced at CA $522 found 6 days ago
Alaska Airlines
Sat, Sep. 6 - Sat, Sep. 13
PDX
Portland
IAD
Washington
CA $534 Roundtrip, found 3 days ago
CA $534
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Sep. 6 from Portland to Washington, returning Sat, Sep. 13, priced at CA $534 found 3 days ago
American Airlines
Sun, Sep. 14 - Thu, Sep. 18
PDX
Portland
IAD
Washington
CA $554 Roundtrip, found 6 days ago
CA $554
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Sep. 14 from Portland to Washington, returning Thu, Sep. 18, priced at CA $554 found 6 days ago
United
Wed, Aug. 6 - Mon, Aug. 11
PDX
Portland
IAD
Washington
CA $1,005 Roundtrip, found 1 day ago
CA $1,005
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug. 6 from Portland to Washington, returning Mon, Aug. 11, priced at CA $1,005 found 1 day ago
Hawaiian Airlines
Wed, Aug. 6 - Sat, Aug. 9
PDX
Portland
IAD
Washington
CA $1,031 Roundtrip, found 1 day ago
CA $1,031
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Aug. 6 from Portland to Washington, returning Sat, Aug. 9, priced at CA $1,031 found 1 day ago

Find the cheapest month to fly from Portland (PDX) to Washington (IAD)

May is typically the cheapest month to fly

From CA $285 - CA $567 per traveller.

Graph displaying average flight prices per month

Flight from Portland to Washington (PDX - IAD) route information
Origin airport
Portland Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
CA $429
Distance
3713 km
Average flight time
4 hours 58 mins

Portland to Chantilly Flights

The easy way to book your flights from Portland to Washington 

With Expedia, it’s simple to find and book flights to Washington from Portland whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Washington Dulles Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Portland to Washington today, tomorrow, or this week.  

 

Save dollars with cheap flights from Portland Intl., PDX to Washington Dulles Intl., IAD 

Sort your search results by price to find great deals on your flight from Portland to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Portland currently is just CA $430 rising to CA $1,031.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Washington  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Washington from Portland 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.

Frequently asked questions

How much is a flight from PDX Airport to Washington Dulles Intl. Airport (IAD)?
Start packing your suitcase, because round-trip flights between Portland Intl. Airport (PDX) and Washington Dulles Intl. Airport (IAD) start from CA $430. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PDX Airport to IAD?
Most flights can be cancelled online, but whether you are charged a fee all comes down to your airline. If you do have to cancel your trip, follow the instructions in the Customer Service Portal.
How do I find cheap flights from PDX to Dulles Intl. Airport that have flexible change policies?
Plenty of airlines will allow you to move your flight without charging a fee. All you pay is the cost difference between the two flights. When searching for PDX to Dulles Intl. Airport flights, you'll see a "No change fees" box for you to select.
How many hours is the flight from Portland Intl. Airport (PDX) to Dulles Intl. Airport?
Consider bringing your own entertainment (like some downloaded podcasts), as it takes an average of 7 hours and 6 minutes to reach IAD from Portland Intl. Airport (PDX). A good set of noise-cancelling earphones will be handy too.
How far is the flight from Portland Intl. Airport (PDX) to IAD?
The flying distance between PDX (PDX) and Washington Dulles Intl. Airport (IAD) (IAD) is 3,700 kilometres. Work your way through your travel song playlist or read a good book and the journey will whiz by.
Which airlines fly direct from Portland Intl. Airport (PDX) to Washington Dulles Intl. Airport (IAD)?
Check out United Airlines (UA) if you want to travel directly from Portland Intl. Airport (PDX) to Dulles Intl. Airport. This popular airline operates 0 monthly flights, so you're sure to find one that fits your travel schedule.
Are PDX to IAD flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes score a bargain, with some of the cheapest airfares from Portland Airport to Dulles Intl. Airport appearing a few weeks before the date of departure. If you'd rather book ahead of time, Expedia compares and updates all the best flight deals frequently — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines advertise prices that far in advance.

Explore a world of travel with Expedia

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