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Cheap flights from Portland to Washington, D.C. from $100

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 2/23. 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

Enter your travel dates to find the best prices.
United Airlines Logo
7:51 pm - 7:32 am
PDX
-
BWI
8h 41m1 stop
United Airlines Logo
8:42 am - 2:46 pm
BWI
-
PDX
9h 04m1 stop
$249United Airlines
Thu, Jan 15 - Sat, Jan 24
Alaska Airlines Logo
7:10 am - 6:14 pm
PDX
-
BWI
8h 04m1 stop
Alaska Airlines Logo
6:46 pm - 11:44 pm
BWI
-
PDX
7h 58m1 stop
$250Alaska Airlines
Tue, Feb 10 - Wed, Feb 18
Delta Logo
1:39 pm - 11:44 pm
PDX
-
BWI
7h 05m1 stop
Delta Logo
3:00 pm - 8:32 pm
BWI
-
PDX
8h 32m1 stop
$251Delta
Wed, Jan 14 - Tue, Jan 27
United Airlines Logo
7:51 pm - 7:32 am
PDX
-
BWI
8h 41m1 stop
United Airlines Logo
8:42 am - 2:46 pm
BWI
-
PDX
9h 04m1 stop
$252United Airlines
Mon, Jan 12 - Thu, Jan 15
Delta Logo
1:39 pm - 11:44 pm
PDX
-
BWI
7h 05m1 stop
Delta Logo
6:00 am - 8:59 pm
BWI
-
PDX
17h 59m2 stops
$253Delta
Tue, Jan 13 - Tue, Jan 27
Delta Logo
1:39 pm - 11:44 pm
PDX
-
BWI
7h 05m1 stop
Delta Logo
3:00 pm - 8:32 pm
BWI
-
PDX
8h 32m1 stop
$254Delta
Tue, Jan 13 - Fri, Jan 23
United Airlines Logo
7:51 pm - 7:32 am
PDX
-
BWI
8h 41m1 stop
United Airlines Logo
10:05 am - 6:55 pm
BWI
-
PDX
11h 50m2 stops
$255United Airlines
Thu, Jan 15 - Sat, Jan 24
Delta Logo
7:37 pm - 10:27 am
PDX
-
BWI
11h 50m2 stops
Delta Logo
6:05 am - 6:50 pm
BWI
-
PDX
15h 45m2 stops
$256Delta
Mon, Jan 12 - Thu, Jan 22
Alaska Airlines Logo
9:40 pm - 4:26 pm
PDX
-
IAD
15h 46m2 stops
Alaska Airlines Logo
6:04 pm - 8:47 pm
IAD
-
PDX
29h 43m1 stop
$285Alaska Airlines
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
5:44 am - 4:31 pm
PDX
-
IAD
7h 47m1 stop
American Airlines Logo
3:13 pm - 12:16 am
IAD
-
PDX
12h 03m2 stops
$302American Airlines
Sat, Feb 21 - Wed, Feb 25

Alaska Airlines flights from Portland to Washington, D.C.

Our best Alaska Airlines deals on Portland to Washington, D.C. flight tickets
Alaska Airlines
Feb 10
PDX7:10 amPortland
8h 04m
1 stop
BWI6:14 pmBaltimore/Washington
Feb 18
BWI6:46 pmBaltimore/Washington
7h 58m
1 stop
PDX11:44 pmPortland
$250
Find similar
Alaska Airlines
Jan 14
PDX9:40 pmPortland
15h 46m
2 stops
IAD4:26 pmWashington, D.C. Dulles Intl
Jan 18
IAD6:04 pmWashington, D.C. Dulles Intl
29h 43m
1 stop
PDX8:47 pmPortland
$285
Find similar
Alaska Airlines
Jan 16
PDX9:30 pmPortland
21h 29m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Jan 18
DCA8:00 amWashington, D.C. Reagan-National
28h 29m
1 stop
PDX9:29 amPortland
$291
Find similar

Southwest flights from Portland to Washington, D.C.

Our best Southwest deals on Portland to Washington, D.C. flight tickets
Southwest
Jan 28
PDX11:05 amPortland
9h 15m
2 stops
DCA11:20 pmWashington, D.C. Reagan-National
Jan 31
DCA6:05 amWashington, D.C. Reagan-National
8h 10m
1 stop
PDX11:15 amPortland
$322
Find similar
Southwest
Jan 28
PDX5:05 amPortland
13h 50m
2 stops
IAD9:55 pmWashington, D.C. Dulles Intl
Jan 31
IAD7:00 amWashington, D.C. Dulles Intl
10h 35m
1 stop
PDX2:35 pmPortland
$328
Find similar
Southwest
Jan 20
PDX6:30 amPortland
8h 50m
1 stop
DCA6:20 pmWashington, D.C. Reagan-National
Jan 29
DCA8:00 amWashington, D.C. Reagan-National
10h 40m
2 stops
PDX3:40 pmPortland
$342
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Washington, D.C. 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 December 23, 2025.
Use the filters below to find and compare flights from Portland to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Thu 1/15

7:51 pm-7:32 am

1 stop8h 41m

Baltimore/Washington

Sat 1/24

8:42 am-2:46 pm

1 stop9h 04m

$249

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Tue 2/10

7:10 am-6:14 pm

1 stop8h 04m

Baltimore/Washington

Wed 2/18

6:46 pm-11:44 pm

1 stop7h 58m

$250

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Wed 1/14

1:39 pm-11:44 pm

1 stop7h 05m

Baltimore/Washington

Tue 1/27

3:00 pm-8:32 pm

1 stop8h 32m

$251

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Mon 1/12

7:51 pm-7:32 am

1 stop8h 41m

Baltimore/Washington

Thu 1/15

8:42 am-2:46 pm

1 stop9h 04m

$252

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Tue 1/13

1:39 pm-11:44 pm

1 stop7h 05m

Baltimore/Washington

Tue 1/27

6:00 am-8:59 pm

2 stops17h 59m

$253

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Tue 1/13

1:39 pm-11:44 pm

1 stop7h 05m

Baltimore/Washington

Fri 1/23

3:00 pm-8:32 pm

1 stop8h 32m

$254

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Thu 1/15

7:51 pm-7:32 am

1 stop8h 41m

Baltimore/Washington

Sat 1/24

10:05 am-6:55 pm

2 stops11h 50m

$255

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Mon 1/12

7:37 pm-10:27 am

2 stops11h 50m

Baltimore/Washington

Thu 1/22

6:05 am-6:50 pm

2 stops15h 45m

$256

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 1/14

9:40 pm-4:26 pm

2 stops15h 46m

Washington, D.C. Dulles Intl

Sun 1/18

6:04 pm-8:47 pm

1 stop29h 43m

$285

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sat 2/21

5:44 am-4:31 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Wed 2/25

3:13 pm-12:16 am

2 stops12h 03m

$302

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.

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.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Portland, with most prices found around $344. If you’re not able to fly to Washington, D.C. in January, then February is your next best option. Flight prices from Portland to Washington, D.C. during February average around $345.

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

On average, the least expensive day to fly to Washington, D.C. from Portland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $490. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Washington, D.C. for around $669.

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

In the afternoon is the cheapest time of day to fly from Portland to Washington, D.C. when you can find flight prices for as low as $269. Flying to Washington, D.C. in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $554. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $448 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Portland for as low as $370 on momondo.

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

There are 4 cabin classes available to choose from on Portland to Washington, D.C. 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. flights?

You could potentially save up to 15% on your flight if you consider stops on a Portland to Washington, D.C. flight.

How have Portland to Washington, D.C. flight prices changed over time?

As of December 2025, prices for Portland to Washington, D.C. flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Washington, D.C. 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. (PDX to WAS) flight deals and tips

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

Best Price Found

$158

Fastest flight time

4h 48m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Portland in the past 72 hours is $158. The best round-trip flight deal from Portland to Washington, D.C. found on momondo in the last 72 hours is $356.
The fastest flight from Portland to Washington, D.C. takes 4h 48m
Direct flights go from Portland to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Portland there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • How far is Portland to Washington, D.C. by plane?

    A flight from Portland to Washington, D.C. will travel around 2345.6 mi. A reasonable flight in good conditions will take 4h 48m.

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

    Prices for flights from Portland Airport to Washington, D.C. are updated daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Washington, D.C..

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

    The travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from Portland to Washington, D.C.

Compare and see reviews for airlines that fly from Portland to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $89Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
FrontierPriceFrom $132Free CancellationRating
5.8
3,073 reviews
Search Frontier flights
DeltaPriceFrom $188Free CancellationRating
7.9
8,015 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $243Free CancellationRating
7.4
9,109 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $253Free CancellationRating
8.0
11,517 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $299Free CancellationRating
7.8
2,820 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $301Free CancellationRating
8.0
4,256 reviews
Search Southwest flights

  • Alaska Airlines Flights From Portland to Washington, D.C.

    Alaska Airlines flight deals from Portland to Washington, D.C. start from $253 round-trip. Over the 7 Alaska Airlines flights for this route in a normal week, average airfare is usually $487 round-trip - but some users have found much cheaper deals with momondo.

  • Hawaiian Airlines Flights From Portland to Washington, D.C.

    Another popular option for Portland to Washington, D.C. flights is Hawaiian Airlines (7.8/10, 2,820 ratings). Hawaiian Airlines flies from Portland to Washington, D.C. around 7 times per week, with deals starting from $299 round-trip and rising to an average price of around $512.

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
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Gaithersburg
Reston
Manassas
Fairfax
Glen Burnie
Linthicum Heights
Bethesda

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Portland.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Portland with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Washington, D.C..

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

If you are not ready to book a flight from Portland to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport