What is the cheapest airline that flies from Portland to Washington, D.C. Dulles Intl?

Delta and United Airlines are the most popular carriers operating from Portland to Washington, D.C. Dulles Intl

What airlines fly to Washington, D.C. Dulles Intl Airport?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Portland according to our data. United Airlines is the first choice among our users, with 83% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 4 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Portland Airport to Washington, D.C. Dulles Intl Airport is 4 as of May 2026.

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.

$156 Cheap Flights from Portland to Washington, D.C. Dulles Intl Airport in 2026

Q: What is the typical price of a round-trip flight between Portland and Washington, D.C. Dulles Intl Airport?

Prices are currently low for flights on this route. Typical prices usually range from $567 to $376. The lowest price recently found on this route was $377.

Q: How many flights depart from Portland to Washington, D.C. Dulles Intl Airport on average per day?

As of May 2026, 2 flights take off from Portland and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 8:00AM, with 100% of daily flights taking off at noon.

Q: How many flights depart from Portland to Washington, D.C. Dulles Intl Airport on average per week?

As of May 2026, there are 14 flights per week flying from Portland to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:47 pm - 8:50 am

PDX

IAD

8h 03m

1 stop

6:18 am - 12:41 pm

IAD

PDX

9h 23m

1 stop

$377American Airlines

Wed, May 27 - Sun, May 31

6:59 pm - 8:20 am

PDX

IAD

10h 21m

1 stop

6:14 pm - 11:59 pm

IAD

PDX

8h 45m

1 stop

$379Multiple Airlines

Fri, Aug 7 - Sat, Aug 15

6:05 am - 4:54 pm

PDX

IAD

7h 49m

1 stop

5:54 pm - 10:58 pm

IAD

PDX

8h 04m

1 stop

$382Alaska Airlines

Thu, Sep 17 - Thu, Sep 17

8:10 pm - 2:17 pm

PDX

IAD

15h 07m

1 stop

7:45 am - 10:20 am

IAD

PDX

29h 35m

2 stops

$384Multiple Airlines

Fri, May 29 - Fri, Jun 5

9:39 pm - 9:16 am

PDX

IAD

8h 37m

1 stop

6:00 am - 10:53 am

IAD

PDX

7h 53m

1 stop

$387Delta

Tue, May 26 - Mon, Jun 1

1:35 pm - 11:39 pm

PDX

IAD

7h 04m

1 stop

7:00 am - 11:37 am

IAD

PDX

7h 37m

1 stop

$388Delta

Fri, May 29 - Thu, Jun 4

5:46 pm - 7:34 am

PDX

IAD

10h 48m

1 stop

9:12 am - 10:34 am

IAD

PDX

28h 22m

1 stop

$390Multiple Airlines

Mon, May 25 - Fri, May 29

11:20 pm - 12:48 pm

PDX

IAD

10h 28m

2 stops

2:53 pm - 11:07 pm

IAD

PDX

11h 14m

1 stop

$392American Airlines

Thu, Aug 20 - Tue, Aug 25

1:48 pm - 11:59 pm

PDX

IAD

7h 11m

1 stop

9:50 am - 6:04 pm

IAD

PDX

11h 14m

1 stop

$394Multiple Airlines

Wed, Aug 5 - Sun, Aug 9

8:42 pm - 8:25 am

PDX

IAD

8h 43m

1 stop

9:55 am - 7:47 pm

IAD

PDX

12h 52m

1 stop

$395Frontier

Fri, Jun 12 - Fri, Jun 19

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

Our best Frontier deals on Portland to Washington, D.C. Dulles Intl Airport flight tickets

Frontier

Jun 29

PDX8:42 pmPortland

8h 43m

1 stop

IAD8:25 amWashington, D.C. Dulles Intl

Jul 6

IAD9:50 amWashington, D.C. Dulles Intl

11h 14m

1 stop

PDX6:04 pmPortland

$374

Frontier

Jun 12

PDX8:42 pmPortland

8h 43m

1 stop

IAD8:25 amWashington, D.C. Dulles Intl

Jun 19

IAD9:55 amWashington, D.C. Dulles Intl

12h 52m

1 stop

PDX7:47 pmPortland

$395

Frontier

Jun 29

PDX8:42 pmPortland

8h 43m

1 stop

IAD8:25 amWashington, D.C. Dulles Intl

Jul 6

IAD9:50 amWashington, D.C. Dulles Intl

11h 14m

1 stop

PDX6:04 pmPortland

$404

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

May 27

PDX9:47 pmPortland

8h 03m

1 stop

IAD8:50 amWashington, D.C. Dulles Intl

May 31

IAD6:18 amWashington, D.C. Dulles Intl

9h 23m

1 stop

PDX12:41 pmPortland

$377

American Airlines

Aug 20

PDX11:20 pmPortland

10h 28m

2 stops

IAD12:48 pmWashington, D.C. Dulles Intl

Aug 25

IAD2:53 pmWashington, D.C. Dulles Intl

11h 14m

1 stop

PDX11:07 pmPortland

$392

American Airlines

Jun 2

PDX11:20 amPortland

9h 53m

2 stops

IAD12:13 amWashington, D.C. Dulles Intl

Jun 9

IAD1:06 pmWashington, D.C. Dulles Intl

11h 15m

2 stops

PDX9:21 pmPortland

$397

momondo Fare Finder

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

Cheapest round-trip

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 5/27

9:47 pm-8:50 am

1 stop8h 03m

Washington, D.C. Dulles Intl

Sun 5/31

6:18 am-12:41 pm

1 stop9h 23m

$377

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 8/7

6:59 pm-8:20 am

1 stop10h 21m

Washington, D.C. Dulles Intl

Sat 8/15

6:14 pm-11:59 pm

1 stop8h 45m

$379

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 9/17

6:05 am-4:54 pm

1 stop7h 49m

Washington, D.C. Dulles Intl

Thu 9/17

5:54 pm-10:58 pm

1 stop8h 04m

$382

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 5/29

8:10 pm-2:17 pm

1 stop15h 07m

Washington, D.C. Dulles Intl

Fri 6/5

7:45 am-10:20 am

2 stops29h 35m

$384

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 5/26

9:39 pm-9:16 am

1 stop8h 37m

Washington, D.C. Dulles Intl

Mon 6/1

6:00 am-10:53 am

1 stop7h 53m

$387

Quickest round-trip

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 5/29

1:35 pm-11:39 pm

1 stop7h 04m

Washington, D.C. Dulles Intl

Thu 6/4

7:00 am-11:37 am

1 stop7h 37m

$388

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Mon 5/25

5:46 pm-7:34 am

1 stop10h 48m

Washington, D.C. Dulles Intl

Fri 5/29

9:12 am-10:34 am

1 stop28h 22m

$390

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 8/20

11:20 pm-12:48 pm

2 stops10h 28m

Washington, D.C. Dulles Intl

Tue 8/25

2:53 pm-11:07 pm

1 stop11h 14m

$392

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 8/5

1:48 pm-11:59 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Sun 8/9

9:50 am-6:04 pm

1 stop11h 14m

$394

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 6/12

8:42 pm-8:25 am

1 stop8h 43m

Washington, D.C. Dulles Intl

Fri 6/19

9:55 am-7:47 pm

1 stop12h 52m

$395

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Portland and Washington, D.C. Dulles Intl Airport?

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 $296. 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 $337.

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

Our data shows that Friday 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 $494. 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 $663.

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 $497 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 $556 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 from Portland 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 $424 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 $328 on momondo.

Can stopping save me money on Portland to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 32% 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 May 2026, prices for Portland to Washington, D.C. Dulles Intl Airport flights are approximately 23% 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	$303
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 $303. The best round-trip flight deal from Portland to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $471.

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

Frequently asked questions about flying from Portland to Washington, D.C. Dulles Intl Airport

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?
The number of operators available for flights from Portland Airport to Washington, D.C. Dulles Intl Airport is 4 as of May 2026.
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?
momondo data reveals that the most frequently booked plane model on the route from Portland to Washington, D.C. Dulles Intl Airport is Boeing 737 MAX 9, representing 40.40% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 25.25%, Boeing 737-900 at 10.35%, and Boeing 737 MAX 8 at 7.58%.
What is the most popular airline from Portland to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Washington, D.C. Dulles Intl Airport is United Airlines (83% of total bookings). The next most popular airlines are Alaska Airlines (7%), Delta (7%), and Southwest (4%).

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
Delta	PriceFrom $138	Free Cancellation	Rating 7.9 8,458 reviews	Search Delta flights
Southwest	PriceFrom $183	Free Cancellation	Rating 7.9 4,305 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $253	Free Cancellation	Rating 7.9 12,332 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $297	Free Cancellation	Rating 7.4 9,684 reviews	Search United Airlines flights

United Airlines Flights From Portland to Washington, D.C. Dulles Intl Airport
United Airlines flight deals from Portland to Washington, D.C. Dulles Intl Airport start from $297 round-trip. Over the 7 United Airlines flights for this route in a normal week, average airfare is usually $458 round-trip - but some users have found much cheaper deals with momondo.

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Fredericksburg

Silver Spring

Rockville

Manassas

Sterling

Linthicum Heights

Tysons

Bethesda

Springfield

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.

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

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Cheap flights from Portland to Washington, D.C. from $157

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 6/1. 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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Frontier flights from Portland to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Portland to Washington, D.C. Dulles Intl Airport flight tickets

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

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Washington, D.C. Dulles Intl Airport that are best for you.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Portland to Washington, D.C. Dulles Intl Airport

What is the typical price of a round-trip flight between Portland and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

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

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

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

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

Can stopping save me money on Portland to Washington, D.C. Dulles Intl Airport flights?

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

What is the cheapest airline that flies from Portland to Washington, D.C. Dulles Intl?

What airlines fly to Washington, D.C. Dulles Intl Airport?

How many flights depart from Portland to Washington, D.C. Dulles Intl Airport on average per day?

How many flights depart from Portland to Washington, D.C. Dulles Intl Airport on average per week?

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

United Airlines Flights From Portland to Washington, D.C. Dulles Intl Airport

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

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