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Cheap flights from Portland to Washington, D.C. from $137

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 5/13. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:32 pm - 11:46 pm
PDX
-
IAD
7h 14m
1 stop
Delta Logo
7:00 am - 12:44 pm
IAD
-
PDX
8h 44m
1 stop
$277Delta
Thu, Feb 19 - Sun, Feb 22
American Airlines Logo
5:40 am - 4:31 pm
PDX
-
IAD
7h 51m
1 stop
American Airlines Logo
11:30 am - 8:44 pm
IAD
-
PDX
12h 14m
2 stops
$282American Airlines
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
11:40 pm - 1:32 pm
PDX
-
IAD
10h 52m
2 stops
American Airlines Logo
5:37 pm - 11:27 pm
IAD
-
PDX
8h 50m
1 stop
$284American Airlines
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
11:40 pm - 2:39 pm
PDX
-
IAD
11h 59m
2 stops
American Airlines Logo
3:11 pm - 12:17 am
IAD
-
PDX
12h 06m
2 stops
$287American Airlines
Tue, Feb 24 - Tue, Mar 3
American Airlines Logo
11:40 pm - 1:32 pm
PDX
-
IAD
10h 52m
2 stops
American Airlines Logo
3:11 pm - 12:17 am
IAD
-
PDX
12h 06m
2 stops
$290American Airlines
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
11:10 pm - 7:03 am
PDX
-
IAD
4h 53mnonstop
United Airlines Logo
7:05 pm - 9:58 pm
IAD
-
PDX
5h 53mnonstop
$293United Airlines
Sat, Mar 14 - Thu, Mar 19
United Airlines Logo
1:39 pm - 1:03 am
PDX
-
IAD
8h 24m
1 stop
United Airlines Logo
5:26 pm - 10:45 pm
IAD
-
PDX
8h 19m
1 stop
$294United Airlines
Sat, Mar 7 - Tue, Mar 10
United Airlines Logo
7:00 am - 5:00 pm
PDX
-
IAD
7h 00m
1 stop
United Airlines Logo
7:05 pm - 9:58 pm
IAD
-
PDX
5h 53mnonstop
$295United Airlines
Sat, Feb 28 - Fri, Mar 6
Alaska Airlines Logo
9:26 pm - 5:27 pm
PDX
-
IAD
17h 01m
1 stop
Alaska Airlines Logo
6:20 pm - 9:50 am
IAD
-
PDX
18h 30m
1 stop
$297Alaska Airlines
Sun, Feb 22 - Sun, Mar 15
United Airlines Logo
6:57 pm - 5:18 am
PDX
-
IAD
7h 21m
1 stop
United Airlines Logo
7:05 pm - 9:58 pm
IAD
-
PDX
5h 53mnonstop
$302United Airlines
Thu, Feb 26 - Thu, Mar 5

Delta flights from Portland to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Portland to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Feb 19
PDX1:32 pmPortland
7h 14m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
Feb 22
IAD7:00 amWashington, D.C. Dulles Intl
8h 44m
1 stop
PDX12:44 pmPortland
$277
Delta
Feb 17
PDX9:45 pmPortland
8h 28m
1 stop
IAD9:13 amWashington, D.C. Dulles Intl
Feb 21
IAD10:57 amWashington, D.C. Dulles Intl
11h 19m
1 stop
PDX7:16 pmPortland
$308
Delta
Feb 19
PDX1:53 pmPortland
7h 02m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Feb 21
IAD12:35 pmWashington, D.C. Dulles Intl
9h 41m
1 stop
PDX7:16 pmPortland
$318

American Airlines flights from Portland to Washington, D.C. Dulles Intl Airport

Our best American Airlines deals on Portland to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Feb 24
PDX5:40 amPortland
7h 51m
1 stop
IAD4:31 pmWashington, D.C. Dulles Intl
Mar 3
IAD11:30 amWashington, D.C. Dulles Intl
12h 14m
2 stops
PDX8:44 pmPortland
$282
American Airlines
Feb 25
PDX11:40 pmPortland
10h 52m
2 stops
IAD1:32 pmWashington, D.C. Dulles Intl
Mar 4
IAD5:37 pmWashington, D.C. Dulles Intl
8h 50m
1 stop
PDX11:27 pmPortland
$284
American Airlines
Feb 24
PDX11:40 pmPortland
11h 59m
2 stops
IAD2:39 pmWashington, D.C. Dulles Intl
Mar 3
IAD3:11 pmWashington, D.C. Dulles Intl
12h 06m
2 stops
PDX12:17 amPortland
$287

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Washington, D.C. Dulles Intl 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 January 28, 2026.
Use the filters below to find and compare flights from Portland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 2/19

1:32 pm-11:46 pm

1 stop7h 14m

Washington, D.C. Dulles Intl

Sun 2/22

7:00 am-12:44 pm

1 stop8h 44m

$277

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 2/24

5:40 am-4:31 pm

1 stop7h 51m

Washington, D.C. Dulles Intl

Tue 3/3

11:30 am-8:44 pm

2 stops12h 14m

$282

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 2/25

11:40 pm-1:32 pm

2 stops10h 52m

Washington, D.C. Dulles Intl

Wed 3/4

5:37 pm-11:27 pm

1 stop8h 50m

$284

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 2/24

11:40 pm-2:39 pm

2 stops11h 59m

Washington, D.C. Dulles Intl

Tue 3/3

3:11 pm-12:17 am

2 stops12h 06m

$287

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 2/25

11:40 pm-1:32 pm

2 stops10h 52m

Washington, D.C. Dulles Intl

Wed 3/4

3:11 pm-12:17 am

2 stops12h 06m

$290

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sat 3/14

11:10 pm-7:03 am

Nonstop4h 53m

Washington, D.C. Dulles Intl

Thu 3/19

7:05 pm-9:58 pm

Nonstop5h 53m

$293

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sat 3/7

1:39 pm-1:03 am

1 stop8h 24m

Washington, D.C. Dulles Intl

Tue 3/10

5:26 pm-10:45 pm

1 stop8h 19m

$294

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sat 2/28

7:00 am-5:00 pm

1 stop7h 00m

Washington, D.C. Dulles Intl

Fri 3/6

7:05 pm-9:58 pm

Nonstop5h 53m

$295

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Sun 2/22

9:26 pm-5:27 pm

1 stop17h 01m

Washington, D.C. Dulles Intl

Sun 3/15

6:20 pm-9:50 am

1 stop18h 30m

$297

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 2/26

6:57 pm-5:18 am

1 stop7h 21m

Washington, D.C. Dulles Intl

Thu 3/5

7:05 pm-9:58 pm

Nonstop5h 53m

$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. Dulles Intl 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. Dulles Intl Airport?

In general, January is the cheapest month to fly from Portland to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $317. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $375.

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

Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $491. 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. Dulles Intl Airport for around $682.

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

Flying to Washington, D.C. Dulles Intl Airport from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $498 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $572 on average. Flights to Washington, D.C. Dulles Intl Airport from Portland in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Portland to Washington, D.C. Dulles Intl for the best Portland - Washington, D.C. Dulles Intl flight prices

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $438 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Portland for as low as $370 on momondo.

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

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

You could potentially save up to 20% on your flight if you consider stops on a Portland to Washington, D.C. Dulles Intl Airport flight.

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

As of January 2026, prices for Portland to Washington, D.C. Dulles Intl Airport flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from Portland to Washington, D.C. Dulles Intl Airport

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

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

Best Price Found

$238

Fastest flight time

4h 48m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Portland in the past 72 hours is $238. The best round-trip flight deal from Portland to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $459.
The fastest flight from Portland to Washington, D.C. Dulles Intl Airport takes 4h 48m
Direct flights go from Portland to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

    A flight from Portland to Washington, D.C. Dulles Intl will travel around 2324.3 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. Dulles Intl Airport?

    Prices for flights from Portland Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

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

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

    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. Dulles Intl Airport.

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

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek 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. Dulles Intl Airport?

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

Best airlines flying from Portland to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Portland to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $253Free CancellationRating
8.0
11,799 reviews
Search Alaska Airlines flights
DeltaPriceFrom $277Free CancellationRating
7.9
8,122 reviews
Search Delta flights
United AirlinesPriceFrom $307Free CancellationRating
7.4
9,208 reviews
Search United Airlines flights
SouthwestPriceFrom $336Free CancellationRating
8.0
4,268 reviews
Search Southwest flights

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
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
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?

Yes. All flights to Washington, D.C. from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Portland to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Portland to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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