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Cheap flights from Portland to Washington, D.C. from $139

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 3/9. 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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0 bags

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Find the cheapest flights from Portland to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:35 pm - 8:59 am
PDX
-
DCA
6h 24m
1 stop
American Airlines Logo
6:00 am - 10:48 am
DCA
-
PDX
7h 48m
1 stop
$278American Airlines
Thu, Mar 5 - Wed, Mar 11
Frontier Logo
12:04 pm - 1:02 pm
PDX
-
DCA
21h 58m
1 stop
Frontier Logo
6:00 pm - 11:09 am
DCA
-
PDX
20h 09m
1 stop
$281Frontier
Sun, Mar 8 - Sat, Mar 14
Frontier Logo
9:53 am - 4:59 pm
PDX
-
DCA
28h 06m
2 stops
Frontier Logo
6:00 pm - 1:02 pm
DCA
-
PDX
22h 02m
1 stop
$286Frontier
Thu, Apr 16 - Tue, Apr 21
Delta Logo
6:30 am - 7:40 pm
PDX
-
DCA
10h 10m
1 stop
Delta Logo
4:40 pm - 11:59 pm
DCA
-
PDX
10h 19m
1 stop
$287Delta
Fri, Mar 13 - Mon, Mar 16
Frontier Logo
1:48 pm - 1:00 pm
PDX
-
DCA
20h 12m
1 stop
Frontier Logo
7:00 am - 8:59 am
DCA
-
PDX
28h 59m
2 stops
$294Frontier
Wed, Apr 15 - Wed, Apr 22
Delta Logo
5:30 am - 3:23 pm
PDX
-
DCA
6h 53m
1 stop
Delta Logo
4:40 pm - 10:19 pm
DCA
-
PDX
8h 39m
1 stop
$297Delta
Wed, Mar 18 - Sat, Mar 21
Frontier Logo
1:48 pm - 1:00 pm
PDX
-
DCA
20h 12m
1 stop
Frontier Logo
7:00 am - 8:59 am
DCA
-
PDX
28h 59m
2 stops
$300Frontier
Wed, Apr 22 - Wed, Apr 29
Southwest Logo
5:05 am - 4:35 pm
PDX
-
DCA
8h 30m
1 stop
Southwest Logo
5:15 pm - 12:55 am
DCA
-
PDX
10h 40m
2 stops
$301Southwest
Wed, Mar 4 - Sat, Mar 7
Frontier Logo
1:48 pm - 9:59 pm
PDX
-
DCA
29h 11m
1 stop
Frontier Logo
6:00 pm - 8:59 am
DCA
-
PDX
17h 59m
2 stops
$304Frontier
Tue, May 5 - Sat, May 9
Southwest Logo
5:05 am - 4:35 pm
PDX
-
DCA
8h 30m
1 stop
Southwest Logo
5:15 pm - 12:55 am
DCA
-
PDX
10h 40m
2 stops
$306Southwest
Tue, Mar 3 - Sat, Mar 7

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

Our best Frontier deals on Portland to Washington, D.C. Reagan-National Airport flight tickets
Frontier
Mar 8
PDX12:04 pmPortland
21h 58m
1 stop
DCA1:02 pmWashington, D.C. Reagan-National
Mar 14
DCA6:00 pmWashington, D.C. Reagan-National
20h 09m
1 stop
PDX11:09 amPortland
$281
Frontier
Apr 16
PDX9:53 amPortland
28h 06m
2 stops
DCA4:59 pmWashington, D.C. Reagan-National
Apr 21
DCA6:00 pmWashington, D.C. Reagan-National
22h 02m
1 stop
PDX1:02 pmPortland
$286
Frontier
Apr 15
PDX1:48 pmPortland
20h 12m
1 stop
DCA1:00 pmWashington, D.C. Reagan-National
Apr 22
DCA7:00 amWashington, D.C. Reagan-National
28h 59m
2 stops
PDX8:59 amPortland
$294

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

Our best JetBlue deals on Portland to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
May 26
PDX11:40 pmPortland
12h 00m
1 stop
DCA2:40 pmWashington, D.C. Reagan-National
Jun 3
DCA2:59 pmWashington, D.C. Reagan-National
10h 26m
1 stop
PDX10:25 pmPortland
$333
JetBlue
May 30
PDX11:40 pmPortland
7h 58m
1 stop
DCA10:38 amWashington, D.C. Reagan-National
Jun 7
DCA2:59 pmWashington, D.C. Reagan-National
10h 26m
1 stop
PDX10:25 pmPortland
$373

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Washington, D.C. Reagan-National Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 14, 2026.
Use the filters below to find and compare flights from Portland to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Thu 3/5

11:35 pm-8:59 am

1 stop6h 24m

Washington, D.C. Reagan-National

Wed 3/11

6:00 am-10:48 am

1 stop7h 48m

$278

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Sun 3/8

12:04 pm-1:02 pm

1 stop21h 58m

Washington, D.C. Reagan-National

Sat 3/14

6:00 pm-11:09 am

1 stop20h 09m

$281

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Thu 4/16

9:53 am-4:59 pm

2 stops28h 06m

Washington, D.C. Reagan-National

Tue 4/21

6:00 pm-1:02 pm

1 stop22h 02m

$286

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Fri 3/13

6:30 am-7:40 pm

1 stop10h 10m

Washington, D.C. Reagan-National

Mon 3/16

4:40 pm-11:59 pm

1 stop10h 19m

$287

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 4/15

1:48 pm-1:00 pm

1 stop20h 12m

Washington, D.C. Reagan-National

Wed 4/22

7:00 am-8:59 am

2 stops28h 59m

$294

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 3/18

5:30 am-3:23 pm

1 stop6h 53m

Washington, D.C. Reagan-National

Sat 3/21

4:40 pm-10:19 pm

1 stop8h 39m

$297

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 4/22

1:48 pm-1:00 pm

1 stop20h 12m

Washington, D.C. Reagan-National

Wed 4/29

7:00 am-8:59 am

2 stops28h 59m

$300

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 3/4

5:05 am-4:35 pm

1 stop8h 30m

Washington, D.C. Reagan-National

Sat 3/7

5:15 pm-12:55 am

2 stops10h 40m

$301

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Tue 5/5

1:48 pm-9:59 pm

1 stop29h 11m

Washington, D.C. Reagan-National

Sat 5/9

6:00 pm-8:59 am

2 stops17h 59m

$304

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Tue 3/3

5:05 am-4:35 pm

1 stop8h 30m

Washington, D.C. Reagan-National

Sat 3/7

5:15 pm-12:55 am

2 stops10h 40m

$306

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Portland, with most prices found around $377. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $393.

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 Wednesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Wednesday will often find tickets for as low as $478. Flights from Portland to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $767. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $470 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 $387 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.

Can stopping save me money on Portland to Washington, D.C. Reagan-National Airport flights?

You could potentially save up to 12% on your flight if you consider stops on a Portland to Washington, D.C. Reagan-National Airport flight.

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

As of February 2026, prices for Portland to Washington, D.C. Reagan-National Airport flights are approximately 62% more expensive 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

$243

Fastest flight time

4h 56m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Portland in the past 72 hours is $243. The best round-trip flight deal from Portland to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $372.
The fastest flight from Portland to Washington, D.C. Reagan-National Airport takes 4h 56m
Direct flights go from Portland to Washington, D.C. Reagan-National Airport every day.
Search flight deals

  • 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 4h 56m.

  • 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 $165Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
DeltaPriceFrom $168Free CancellationRating
7.9
8,200 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $199Free CancellationRating
7.8
2,833 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $285Free CancellationRating
7.2
11,288 reviews
Search American Airlines flights
SouthwestPriceFrom $317Free CancellationRating
8.0
4,284 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $317Free CancellationRating
8.0
11,882 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $327Free CancellationRating
7.4
9,289 reviews
Search United Airlines 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 4 times per week, with 11,882 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 $317 (round-trip), much lower than the average airfare cost of $573 for Alaska Airlines flights on this route.

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

    The best Hawaiian Airlines deal for Portland to Washington, D.C. Reagan-National Airport flight tickets found on momondo in the last 72 hours was $199, round-trip. It should be noted that an average Hawaiian Airlines flight deal for this route in this time was higher, at $498 round-trip. Hawaiian Airlines operates 5 flights out of Portland into Washington, D.C. Reagan-National Airport in an average week, so prices vary by time and availability. 2,833 Hawaiian Airlines reviews by users on momondo have scored the airline at 7.8/10.

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

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

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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