Cheap Flights from Portland (PDX) to Washington (DCA)

View AU$174 flight on Wed, 24 Sep. 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Ronald Reagan National Airport (DCA)

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Cheap Flights from Portland (PDX) to Washington (DCA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$348 Return, found 5 days ago
AU$348
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$348 found 5 days ago
Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$463 Return, found 5 days ago
AU$463
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$463 found 5 days ago
Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$480 Return, found 5 days ago
AU$480
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$480 found 5 days ago
American Airlines
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$487 Return, found 5 days ago
AU$487
Return
found 5 days ago
Select American Airlines flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$487 found 5 days ago
Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$502 Return, found 5 days ago
AU$502
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$502 found 5 days ago
Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$514 Return, found 5 days ago
AU$514
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$514 found 5 days ago
United
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$526 Return, found 5 days ago
AU$526
Return
found 5 days ago
Select United flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$526 found 5 days ago
Alaska Airlines
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$541 Return, found 5 days ago
AU$541
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$541 found 5 days ago
Alaska Airlines
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$548 Return, found 5 days ago
AU$548
Return
found 5 days ago
Select Alaska Airlines flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$548 found 5 days ago
Delta
Wed, 24 Sep. - Wed, 1 Oct.
PDX
Portland
DCA
Washington
AU$556 Return, found 5 days ago
AU$556
Return
found 5 days ago
Select Delta flight, departing Wed, 24 Sep. from Portland to Washington, returning Wed, 1 Oct., priced at AU$556 found 5 days ago

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

October is typically the cheapest month to fly

From AU$211 - AU$573 per traveller.

Graph displaying average flight prices per month

Flight from Portland to Washington route information
Origin airport
Portland Intl.
Destination airport
Ronald Reagan Washington National
Return price
AU$348
Distance
3750 km
Average flight time
10 hours 17 mins

Your quick guide to flights from Portland to Washington

Pick up great flights from Portland to Washington

With Expedia, you have your pick of 3 flights a day with 20 airlines covering flights from Portland to Washington. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Portland to Washington that take around 11 hours.

Find cheap flights from Portland to Washington

From the great flight deals with prices currently ranging from AU$348 to AU$556, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Portland to Washington around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Washington is normally in September.

Reasons to book your flight from Portland to Washington with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Portland to Washington across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Washington right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from PDX to National Airport?
The lowest price advertised for a round-trip journey from Portland Intl. Airport (PDX) to Ronald Reagan Washington National Airport (DCA) is AU$348. But you better act quick. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Portland Intl. Airport (PDX) to DCA?
We understand that life can throw the odd curveball, so we've made it as hassle-free as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Portland Intl. Airport (PDX) to DCA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for PDX Airport to DCA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Portland Intl. Airport (PDX) to National Airport?
The flight distance from Portland to Arlington is 3 800 kilometres. Bring a drink, some snacks and an interesting book to read. Keep yourself busy in the air and the time will fly by.
Which airlines fly direct from Portland Airport to Ronald Reagan Washington National Airport (DCA)?
Alaska Airlines (AS) will get you from Portland Airport to DCA comfortably and reliably. You can choose from 30 flights every month along this route.
Are Portland Intl. Airport (PDX) to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute?
Flight prices from PDX Airport to Ronald Reagan Washington National Airport (DCA) are available up to 12 months before departure on Expedia. And although you may score great last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more options — and you can avoid being wedged in the dreaded middle seat! We frequently update our fares to bring you the best bargains, so check back often for all the latest specials.

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