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Cheap flights from Portland to Washington, D.C. from $84

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 9/5. 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. (PDX-WAS)

Cheap round-trip flights

Logo
7:52 pm - 9:02 amPDX-BWI
10h 10m2 stops
Logo
6:27 pm - 12:12 amBWI-PDX
8h 45m1 stop
$210
Find Deal
Wed, Sep 3 - Mon, Sep 8
Logo
12:37 pm - 4:30 amPDX-BWI
12h 53m1 stop
Logo
6:29 pm - 11:48 amBWI-PDX
20h 19m1 stop
$211
Find Deal
Fri, Oct 24 - Sun, Oct 26
Frontier Logo
6:05 am - 5:42 pmPDX-BWI
8h 37m1 stop
Frontier Logo
9:59 pm - 10:34 pmBWI-PDX
27h 35m2 stops
$212Frontier
Find Deal
Fri, Sep 5 - Mon, Sep 8
Frontier Logo
12:43 pm - 5:44 pmPDX-BWI
26h 01m1 stop
Frontier Logo
6:29 pm - 11:48 amBWI-PDX
20h 19m1 stop
$233Frontier
Find Deal
Sun, Oct 19 - Fri, Oct 24
Delta Logo
7:15 pm - 6:00 amPDX-BWI
7h 45m1 stop
Delta Logo
7:15 am - 12:20 pmBWI-PDX
8h 05m1 stop
$237Delta
Find Deal
Fri, Oct 17 - Thu, Oct 23
United Airlines Logo
5:00 am - 3:14 pmPDX-BWI
7h 14m1 stop
United Airlines Logo
7:00 pm - 12:45 amBWI-PDX
8h 45m1 stop
$257United Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 10
Delta Logo
1:30 pm - 12:40 amPDX-IAD
8h 10m1 stop
Delta Logo
6:05 am - 10:29 amIAD-PDX
7h 24m1 stop
$297Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
1:25 pm - 12:23 amPDX-IAD
7h 58m1 stop
Alaska Airlines Logo
6:25 am - 12:25 pmIAD-PDX
9h 00m1 stop
$299Alaska Airlines
Find Deal
Sat, Oct 4 - Sat, Oct 11
United Airlines Logo
8:20 am - 4:15 pmPDX-IAD
4h 55mnonstop
United Airlines Logo
6:00 am - 12:17 pmIAD-PDX
9h 17m1 stop
$303United Airlines
Find Deal
Wed, Oct 29 - Sat, Nov 1
Alaska Airlines Logo
1:24 pm - 12:23 amPDX-IAD
7h 59m1 stop
Alaska Airlines Logo
5:52 pm - 9:38 amIAD-PDX
18h 46m1 stop
$306Alaska Airlines
Find Deal
Wed, Sep 17 - Mon, Sep 22

Sun Country Air flights from Portland to Washington, D.C.

Our best Sun Country Air deals on Portland to Washington, D.C. flight tickets
Sun Country Air
Nov 24
PDX6:24 pmPortland
14h 18m
1 stop
IAD11:42 amWashington, D.C. Dulles Intl
Nov 28
IAD12:26 pmWashington, D.C. Dulles Intl
8h 10m
1 stop
PDX5:36 pmPortland
$314
Find similar
Sun Country Air
Oct 17
PDX11:59 pmPortland
14h 21m
1 stop
IAD5:20 pmWashington, D.C. Dulles Intl
Oct 26
IAD12:46 pmWashington, D.C. Dulles Intl
7h 48m
1 stop
PDX5:34 pmPortland
$315
Find similar
Sun Country Air
Oct 23
PDX6:28 pmPortland
13h 52m
1 stop
IAD11:20 amWashington, D.C. Dulles Intl
Oct 26
IAD12:46 pmWashington, D.C. Dulles Intl
7h 48m
1 stop
PDX5:34 pmPortland
$319
Find similar

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

Our best United Airlines deals on Portland to Washington, D.C. flight tickets
United Airlines
Sep 3
PDX5:00 amPortland
7h 14m
1 stop
BWI3:14 pmBaltimore/Washington
Sep 10
BWI7:00 pmBaltimore/Washington
8h 45m
1 stop
PDX12:45 amPortland
$257
Find similar
United Airlines
Oct 29
PDX8:20 amPortland
4h 55m
IAD4:15 pmWashington, D.C. Dulles Intl
Nov 1
IAD6:00 amWashington, D.C. Dulles Intl
9h 17m
1 stop
PDX12:17 pmPortland
$303
Find similar
United Airlines
Nov 1
PDX8:20 amPortland
4h 55m
IAD4:15 pmWashington, D.C. Dulles Intl
Nov 9
IAD5:37 pmWashington, D.C. Dulles Intl
5h 52m
PDX8:29 pmPortland
$318
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 August 21, 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

Wed 9/3

7:52 pm-9:02 am

2 stops10h 10m

Baltimore/Washington

Mon 9/8

6:27 pm-12:12 am

1 stop8h 45m

$210

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Fri 10/24

12:37 pm-4:30 am

1 stop12h 53m

Baltimore/Washington

Sun 10/26

6:29 pm-11:48 am

1 stop20h 19m

$211

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Fri 9/5

6:05 am-5:42 pm

1 stop8h 37m

Baltimore/Washington

Mon 9/8

9:59 pm-10:34 pm

2 stops27h 35m

$212

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Sun 10/19

12:43 pm-5:44 pm

1 stop26h 01m

Baltimore/Washington

Fri 10/24

6:29 pm-11:48 am

1 stop20h 19m

$233

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Fri 10/17

7:15 pm-6:00 am

1 stop7h 45m

Baltimore/Washington

Thu 10/23

7:15 am-12:20 pm

1 stop8h 05m

$237

PortlandBaltimore

PDX - BWI

PDXBWI

Portland

Wed 9/3

5:00 am-3:14 pm

1 stop7h 14m

Baltimore/Washington

Wed 9/10

7:00 pm-12:45 am

1 stop8h 45m

$257

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 10/14

1:30 pm-12:40 am

1 stop8h 10m

Washington, D.C. Dulles Intl

Tue 10/21

6:05 am-10:29 am

1 stop7h 24m

$297

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sat 10/4

1:25 pm-12:23 am

1 stop7h 58m

Washington, D.C. Dulles Intl

Sat 10/11

6:25 am-12:25 pm

1 stop9h 00m

$299

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 10/29

8:20 am-4:15 pm

Nonstop4h 55m

Washington, D.C. Dulles Intl

Sat 11/1

6:00 am-12:17 pm

1 stop9h 17m

$303

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 9/17

1:24 pm-12:23 am

1 stop7h 59m

Washington, D.C. Dulles Intl

Mon 9/22

5:52 pm-9:38 am

1 stop18h 46m

$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.

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 February is, on average, the cheapest month to fly to Washington, D.C. from Portland, with most prices found around $336. If you’re not able to fly to Washington, D.C. in February, then January is your next best option. Flight prices from Portland to Washington, D.C. during January average around $365.

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 $521. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Washington, D.C. for around $689.

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 $596. 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 Baltimore/Washington 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 $503 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 $377 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 31% 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 August 2025, prices for Portland to Washington, D.C. flights are approximately 8% 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

$143

Fastest flight time

4h 55m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from Portland in the past 72 hours is $143. The best round-trip flight deal from Portland to Washington, D.C. found on momondo in the last 72 hours is $282.
The fastest flight from Portland to Washington, D.C. takes 4h 55m
Direct flights go from Portland to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: 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 55m.

  • 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
8,035 reviews
Search Spirit Airlines flights
FrontierPriceFrom $111Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
DeltaPriceFrom $220Free CancellationRating
7.9
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $317Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $318Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $336Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

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

    Alaska Airlines flight deals from Portland to Washington, D.C. start from $336 round-trip. Over the 7 Alaska Airlines flights for this route in a normal week, average airfare is usually $552 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, 2,672 ratings). Hawaiian Airlines flies from Portland to Washington, D.C. around 7 times per week, with deals starting from $317 round-trip and rising to an average price of around $499.

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

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