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Cheap flights from Portland to Washington, D.C. from $138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Washington, D.C. departing on 7/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portland to Washington, D.C.

Cheap round-trip flights

Frontier Logo
6:35 am - 4:59 pmPDX-DCA
7h 24m1 stop
Frontier Logo
1:00 pm - 10:39 pmDCA-PDX
12h 39m1 stop
$257Frontier
Find Deal
Sat, Aug 16 - Wed, Aug 20
Frontier Logo
6:27 am - 9:59 pmPDX-DCA
12h 32m1 stop
Frontier Logo
1:00 pm - 10:39 pmDCA-PDX
12h 39m1 stop
$268Frontier
Find Deal
Sat, Aug 30 - Wed, Sep 3
Hawaiian Airlines Logo
8:00 am - 4:06 pmPDX-DCA
5h 06mnonstop
Hawaiian Airlines Logo
5:49 pm - 8:32 pmDCA-PDX
5h 43mnonstop
$281Hawaiian Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
Hawaiian Airlines Logo
8:00 am - 4:06 pmPDX-DCA
5h 06mnonstop
Hawaiian Airlines Logo
5:49 pm - 8:32 pmDCA-PDX
5h 43mnonstop
$294Hawaiian Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
Delta Logo
12:45 am - 10:57 amPDX-DCA
7h 12m1 stop
Delta Logo
4:59 pm - 11:52 pmDCA-PDX
9h 53m1 stop
$317Delta
Find Deal
Fri, Sep 12 - Mon, Sep 15
Alaska Airlines Logo
8:00 am - 4:06 pmPDX-DCA
5h 06mnonstop
Alaska Airlines Logo
5:49 pm - 8:32 pmDCA-PDX
5h 43mnonstop
$318Alaska Airlines
Find Deal
Fri, Aug 29 - Wed, Sep 3
Southwest Logo
6:10 am - 6:15 pmPDX-DCA
9h 05m2 stops
Southwest Logo
11:55 am - 5:10 pmDCA-PDX
8h 15m1 stop
$322Southwest
Find Deal
Wed, Aug 27 - Mon, Sep 1
Delta Logo
12:40 am - 11:06 amPDX-DCA
7h 26m1 stop
Delta Logo
5:20 pm - 11:49 pmDCA-PDX
9h 29m1 stop
$337Delta
Find Deal
Thu, Aug 7 - Tue, Aug 12
Alaska Airlines Logo
8:00 am - 4:06 pmPDX-DCA
5h 06mnonstop
Alaska Airlines Logo
5:49 pm - 8:32 pmDCA-PDX
5h 43mnonstop
$338Alaska Airlines
Find Deal
Fri, Aug 29 - Mon, Sep 1
Southwest Logo
6:10 am - 5:35 pmPDX-DCA
8h 25m1 stop
Southwest Logo
12:45 pm - 10:10 pmDCA-PDX
12h 25m2 stops
$342Southwest
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Mon, Aug 11 - Wed, Aug 13

Hawaiian Airlines flights from Portland to Washington, D.C. Reagan-National Airport

Our best Hawaiian Airlines deals on Portland to Washington, D.C. Reagan-National Airport flight tickets
Hawaiian Airlines
Aug 30
PDX8:00 amPortland
5h 06m
DCA4:06 pmWashington, D.C. Reagan-National
Sep 6
DCA5:49 pmWashington, D.C. Reagan-National
5h 43m
PDX8:32 pmPortland
$281
Find similar
Hawaiian Airlines
Aug 30
PDX8:00 amPortland
5h 06m
DCA4:06 pmWashington, D.C. Reagan-National
Sep 6
DCA5:49 pmWashington, D.C. Reagan-National
5h 43m
PDX8:32 pmPortland
$294
Find similar
Hawaiian Airlines
Sep 24
PDX8:00 amPortland
5h 06m
DCA4:06 pmWashington, D.C. Reagan-National
Sep 30
DCA5:49 pmWashington, D.C. Reagan-National
5h 43m
PDX8:32 pmPortland
$297
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Alaska Airlines flights from Portland to Washington, D.C. Reagan-National Airport

Our best Alaska Airlines deals on Portland to Washington, D.C. Reagan-National Airport flight tickets
Alaska Airlines
Aug 29
PDX8:00 amPortland
5h 06m
DCA4:06 pmWashington, D.C. Reagan-National
Sep 3
DCA5:49 pmWashington, D.C. Reagan-National
5h 43m
PDX8:32 pmPortland
$318
Find similar
Alaska Airlines
Aug 29
PDX8:00 amPortland
5h 06m
DCA4:06 pmWashington, D.C. Reagan-National
Sep 1
DCA5:49 pmWashington, D.C. Reagan-National
5h 43m
PDX8:32 pmPortland
$338
Find similar
Alaska Airlines
Jul 29
PDX8:00 amPortland
5h 02m
DCA4:02 pmWashington, D.C. Reagan-National
Aug 5
DCA9:59 amWashington, D.C. Reagan-National
11h 27m
1 stop
PDX6:26 pmPortland
$558
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Portland to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C. Reagan-National Airport?

The month of September is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Portland, with most prices found around $386. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $388.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Portland to Washington, D.C. Reagan-National Airport is on a Friday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Friday will often find tickets for as low as $501. Flights from Portland to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $718. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Portland to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the afternoon. Our users have found flights to Washington, D.C. Reagan-National Airport in the afternoon for as low as $229. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the morning when prices are around $561.

What is the cheapest Portland to Washington, D.C. Reagan-National flight route?

Fly from Portland to Washington, D.C. Reagan-National for the best Portland - Washington, D.C. Reagan-National flight prices

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Portland for as low as $405 on momondo.

What cabin class options are available on Portland to Washington, D.C. Reagan-National flights?

There are 4 cabin classes available to choose from on Portland to Washington, D.C. Reagan-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Portland to Washington, D.C. Reagan-National Airport flight prices changed over time?

As of July 2025, prices for Portland to Washington, D.C. Reagan-National Airport flights are approximately 26% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Washington, D.C. Reagan-National Airport (PDX to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Washington, D.C. Reagan-National Airport

Best Price Found

$138

Fastest flight time

4h 57m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Portland in the past 72 hours is $138. The best round-trip flight deal from Portland to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $257.
The fastest flight from Portland to Washington, D.C. Reagan-National Airport takes 4h 57m
Direct flights go from Portland to Washington, D.C. Reagan-National Airport every day.
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  • How far is Portland to Washington, D.C. Reagan-National by plane?

    A flight from Portland to Washington, D.C. Reagan-National will travel around 2347.1 mi. In terms of flight time, this usually takes a little over 5h 06m.

  • When did momondo last update prices for flights from Portland Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from Portland Airport to Washington, D.C. Reagan-National Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to Washington, D.C. Reagan-National Airport?

  • How old do you have to be to fly from Portland Airport to Washington, D.C. Reagan-National Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Portland to Washington, D.C. Reagan-National Airport?

  • What is the most popular airline from Portland to Washington, D.C. Reagan-National Airport?

Best airlines flying from Portland to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from Portland to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $147Free CancellationRating
5.9
3,252 reviews
Search Frontier flights
DeltaPriceFrom $294Free CancellationRating
8.0
7,959 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $299Free CancellationRating
7.8
2,581 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $330Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $337Free CancellationRating
7.4
8,864 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $348Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $391Free CancellationRating
8.0
4,239 reviews
Search Southwest flights

  • Alaska Airlines Flights From Portland to Washington, D.C. Reagan-National Airport

    Alaska Airlines flies from Portland to Washington, D.C. Reagan-National Airport around 7 times per week, with 10,000 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Portland to Washington, D.C. Reagan-National Airport in the last 72 hours was $348 (round-trip), much lower than the average airfare cost of $585 for Alaska Airlines flights on this route.

  • Southwest Flights From Portland to Washington, D.C. Reagan-National Airport

    The best Southwest deal for Portland to Washington, D.C. Reagan-National Airport flight tickets found on momondo in the last 72 hours was $391, round-trip. It should be noted that an average Southwest flight deal for this route in this time was higher, at $656 round-trip. Southwest operates 5 flights out of Portland into Washington, D.C. Reagan-National Airport in an average week, so prices vary by time and availability. 4,241 Southwest reviews by users on momondo have scored the airline at 8.0/10.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
Arlington
National Harbor
Laurel
Woodbridge
Silver Spring
Tysons
Waldorf
Fredericksburg
Manassas
Gaithersburg
Rockville
Towson
Fairfax
Colonial Beach
Glen Burnie
Linthicum Heights
Reston
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Washington, D.C.?

Finding the right flight to Washington, D.C. from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from Portland to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Portland to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Washington, D.C.?

momondo helps you find the best flight between Portland and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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