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Cheap flights from Portland to Washington, D.C. from $148

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 10/7. 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
12:43 pm - 12:04 pmPDX-DCA
20h 21m1 stop
Frontier Logo
6:31 pm - 11:48 amDCA-PDX
20h 17m1 stop
$286Frontier
Find Deal
Sat, Oct 18 - Tue, Oct 21
Hawaiian Airlines Logo
8:03 am - 4:00 pmPDX-DCA
4h 57mnonstop
Hawaiian Airlines Logo
8:59 am - 4:58 pmDCA-PDX
10h 59m1 stop
$287Hawaiian Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
Southwest Logo
6:15 am - 6:15 pmPDX-DCA
9h 00m1 stop
Southwest Logo
2:40 pm - 10:30 pmDCA-PDX
10h 50m2 stops
$290Southwest
Find Deal
Wed, Nov 5 - Wed, Nov 12
Southwest Logo
6:15 am - 6:15 pmPDX-DCA
9h 00m1 stop
Southwest Logo
6:45 pm - 12:20 amDCA-PDX
8h 35m1 stop
$294Southwest
Find Deal
Mon, Dec 8 - Fri, Dec 12
Alaska Airlines Logo
7:04 am - 5:59 pmPDX-DCA
7h 55m1 stop
Alaska Airlines Logo
8:59 am - 4:43 pmDCA-PDX
10h 44m1 stop
$296Alaska Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
American Airlines Logo
10:29 am - 11:12 pmPDX-DCA
9h 43m1 stop
American Airlines Logo
2:35 pm - 11:06 pmDCA-PDX
11h 31m1 stop
$304American Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
American Airlines Logo
10:15 pm - 11:00 amPDX-DCA
9h 45m1 stop
American Airlines Logo
6:38 pm - 12:50 amDCA-PDX
9h 12m1 stop
$317American Airlines
Find Deal
Wed, Nov 19 - Sun, Nov 23
Delta Logo
12:40 am - 11:13 amPDX-DCA
7h 33m1 stop
Delta Logo
4:55 pm - 10:41 pmDCA-PDX
8h 46m1 stop
$318Delta
Find Deal
Tue, Nov 4 - Mon, Nov 10
Delta Logo
5:30 am - 3:28 pmPDX-DCA
6h 58m1 stop
Delta Logo
6:19 am - 10:29 amDCA-PDX
7h 10m1 stop
$319Delta
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Tue, Oct 21 - Wed, Oct 22
Alaska Airlines Logo
8:05 am - 4:00 pmPDX-DCA
4h 55mnonstop
Alaska Airlines Logo
8:59 am - 4:43 pmDCA-PDX
10h 44m1 stop
$327Alaska Airlines
Find Deal
Sat, Dec 6 - Thu, Dec 11

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
Dec 6
PDX7:04 amPortland
7h 55m
1 stop
DCA5:59 pmWashington, D.C. Reagan-National
Dec 13
DCA8:59 amWashington, D.C. Reagan-National
10h 44m
1 stop
PDX4:43 pmPortland
$296
Find similar
Alaska Airlines
Dec 6
PDX8:05 amPortland
4h 55m
DCA4:00 pmWashington, D.C. Reagan-National
Dec 11
DCA8:59 amWashington, D.C. Reagan-National
10h 44m
1 stop
PDX4:43 pmPortland
$327
Find similar
Alaska Airlines
Oct 1
PDX7:21 amPortland
10h 38m
1 stop
DCA8:59 pmWashington, D.C. Reagan-National
Oct 7
DCA5:48 pmWashington, D.C. Reagan-National
5h 41m
PDX8:29 pmPortland
$347
Find similar

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

Our best Southwest deals on Portland to Washington, D.C. Reagan-National Airport flight tickets
Southwest
Nov 5
PDX6:15 amPortland
9h 00m
1 stop
DCA6:15 pmWashington, D.C. Reagan-National
Nov 12
DCA2:40 pmWashington, D.C. Reagan-National
10h 50m
2 stops
PDX10:30 pmPortland
$290
Find similar
Southwest
Dec 8
PDX6:15 amPortland
9h 00m
1 stop
DCA6:15 pmWashington, D.C. Reagan-National
Dec 12
DCA6:45 pmWashington, D.C. Reagan-National
8h 35m
1 stop
PDX12:20 amPortland
$294
Find similar
Southwest
Nov 11
PDX8:00 amPortland
9h 45m
2 stops
DCA8:45 pmWashington, D.C. Reagan-National
Nov 15
DCA6:05 amWashington, D.C. Reagan-National
8h 40m
1 stop
PDX11:45 amPortland
$305
Find similar

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 September 11, 2025.
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

Sat 10/18

12:43 pm-12:04 pm

1 stop20h 21m

Washington, D.C. Reagan-National

Tue 10/21

6:31 pm-11:48 am

1 stop20h 17m

$286

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 11/5

8:03 am-4:00 pm

Nonstop4h 57m

Washington, D.C. Reagan-National

Wed 11/12

8:59 am-4:58 pm

1 stop10h 59m

$287

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 11/5

6:15 am-6:15 pm

1 stop9h 00m

Washington, D.C. Reagan-National

Wed 11/12

2:40 pm-10:30 pm

2 stops10h 50m

$290

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Mon 12/8

6:15 am-6:15 pm

1 stop9h 00m

Washington, D.C. Reagan-National

Fri 12/12

6:45 pm-12:20 am

1 stop8h 35m

$294

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Sat 12/6

7:04 am-5:59 pm

1 stop7h 55m

Washington, D.C. Reagan-National

Sat 12/13

8:59 am-4:43 pm

1 stop10h 44m

$296

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Thu 10/23

10:29 am-11:12 pm

1 stop9h 43m

Washington, D.C. Reagan-National

Tue 10/28

2:35 pm-11:06 pm

1 stop11h 31m

$304

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Wed 11/19

10:15 pm-11:00 am

1 stop9h 45m

Washington, D.C. Reagan-National

Sun 11/23

6:38 pm-12:50 am

1 stop9h 12m

$317

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Tue 11/4

12:40 am-11:13 am

1 stop7h 33m

Washington, D.C. Reagan-National

Mon 11/10

4:55 pm-10:41 pm

1 stop8h 46m

$318

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Tue 10/21

5:30 am-3:28 pm

1 stop6h 58m

Washington, D.C. Reagan-National

Wed 10/22

6:19 am-10:29 am

1 stop7h 10m

$319

PortlandWashington, D.C.

PDX - DCA

PDXDCA

Portland

Sat 12/6

8:05 am-4:00 pm

Nonstop4h 55m

Washington, D.C. Reagan-National

Thu 12/11

8:59 am-4:43 pm

1 stop10h 44m

$327

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 September is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Portland, with most prices found around $360. 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 $399.

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 $498. Flights from Portland to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $744. 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 $557.

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 $473 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 $410 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 September 2025, prices for Portland to Washington, D.C. Reagan-National Airport flights are approximately 21% 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

$319

Fastest flight time

4h 55m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Portland in the past 72 hours is $319. The best round-trip flight deal from Portland to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $387.
The fastest flight from Portland to Washington, D.C. Reagan-National Airport takes 4h 55m
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 55m.

  • 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 $145Free CancellationRating
5.8
3,177 reviews
Search Frontier flights
DeltaPriceFrom $226Free CancellationRating
7.9
7,960 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $299Free CancellationRating
7.8
2,723 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $316Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $337Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $340Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $391Free CancellationRating
8.0
4,248 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 $340 (round-trip), much lower than the average airfare cost of $588 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 $299, round-trip. It should be noted that an average Hawaiian Airlines flight deal for this route in this time was higher, at $500 round-trip. Hawaiian Airlines operates 7 flights out of Portland into Washington, D.C. Reagan-National Airport in an average week, so prices vary by time and availability. 2,723 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
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Glen Burnie
Springfield
Linthicum Heights

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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