What are the cheapest airlines flying from Portland to Washington, D.C. Dulles Intl Airport round-trip?

Cheapflights users have booked flights from Portland to Washington, D.C. Dulles Intl Airport round-trip from $296. Other airlines that can offer you cheap pricing are Delta, from $297, and American Airlines, from $299. Hawaiian Airlines is currently priced 42% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Portland to Washington, D.C. Dulles Intl Airport one-way?

The cheapest airlines for a one-way flight from Portland to Washington, D.C. Dulles Intl Airport are Southwest ($154), Hawaiian Airlines ($155), and Sun Country Air ($158).

What are the cheapest flights from Portland to Washington, D.C. Dulles Intl Airport?

While on average a flight from Portland to Washington, D.C. Dulles Intl Airport is generally $1,439, our data shows the cheapest flight currently is $168. When looking at the most popular route, (Portland - Washington, D.C. Dulles Intl), you can expect to pay $296 for that flight.

What are the most popular airlines that fly from Portland to Washington, D.C. Dulles Intl Airport?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Portland to Washington, D.C. Dulles Intl Airport.

What is the cheapest day to fly round-trip from Portland to Washington, D.C. Dulles Intl Airport?

Users have found that flying from Portland to Washington, D.C. Dulles Intl Airport on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Our data shows that August tends to be the cheapest month to fly to Washington, D.C. Dulles Intl Airport from Portland. Users have commonly found prices around $431 for the month, but tickets can be as low as $123. Due to multiple factors, prepare for potentially higher prices in March.

What airport do you fly from for flights from Portland to Washington, D.C. Dulles Intl?

For a flight from Portland to Washington, D.C. Dulles Intl, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 1 outbound flight to Washington, D.C. Dulles Intl per day. 5 airlines have flights to Washington, D.C. Dulles Intl from Portland on a regular basis.

Can I find deals for flights from Portland to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Portland to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portland to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Dulles Intl.

Can I find deals for business class flights from Portland to Dulles Intl?

Yes. Cheapflights offers flight deals from Portland to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$154+ Flights from Portland to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Portland to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Washington, D.C. Dulles Intl are usually found in February or April, booked 89 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Portland to Dulles Intl

Round-trip from	$296 (Hawaiian Airlines)
One-way from	$154 (Southwest)
Popular in	December
Cheapest in	February
Average price	$543
Good round-trip deal	$435 or less
Good one-way deal	$218 or less

From Portland to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Portland to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($72 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from Portland to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Portland to Washington, D.C. Dulles Intl.

Search Deals

Find flight deals from Portland to Dulles Intl

Cheapest flights from Portland to Dulles Intl
Explore the most affordable flight options available from Portland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Mon 9/159:30 pmPDX - IAD

1 stop7h 02mHawaiian Airlines

Thu 9/186:09 pmIAD - PDX

1 stop7h 35mHawaiian Airlines

Deal found 6/10

$296

Tue 8/512:40 amPDX - IAD

1 stop7h 14mDelta

Wed 8/137:35 amIAD - PDX

1 stop8h 20mDelta

Deal found 6/11

$297

Mon 8/45:30 amPDX - IAD

1 stop9h 08mAmerican Airlines

Tue 8/126:27 amIAD - PDX

1 stop9h 27mAmerican Airlines

Deal found 6/10

$299

Thu 7/1711:55 pmPDX - IAD

1 stop9h 34mSun Country Air

Sat 7/1912:46 pmIAD - PDX

1 stop22h 30mSun Country Air

Deal found 6/10

$305

Tue 9/1610:35 amPDX - IAD

2 stops27h 34mAlaska Airlines

Sat 9/206:09 pmIAD - PDX

2 stops15h 09mAlaska Airlines

Deal found 6/11

$308

Fri 7/1811:59 pmPDX - IAD

1 stop8h 44mMultiple Airlines

Sun 7/203:53 pmIAD - PDX

2 stops19h 39mMultiple Airlines

Deal found 6/10

$309

Fri 7/1111:00 amPDX - IAD

1 stop16h 34mFrontier

Mon 7/147:30 amIAD - PDX

1 stop8h 21mFrontier

Deal found 6/11

$310

Tue 8/198:15 amPDX - IAD

Nonstop5h 05mUnited Airlines

Tue 8/265:33 pmIAD - PDX

Nonstop5h 30mUnited Airlines

Deal found 6/11

$317

Fri 8/18:22 amPDX - IAD

2 stops26h 33mAllegiant Air

Sun 8/33:53 pmIAD - PDX

2 stops19h 39mAllegiant Air

Deal found 6/10

$324

Wed 7/165:00 amPDX - IAD

2 stops10h 25mSouthwest

Wed 7/235:35 pmIAD - PDX

1 stop9h 40mSouthwest

Deal found 6/9

$362

Best flights from Portland to Dulles Intl
Discover carefully curated flight deals from Portland to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Mon 9/159:30 pmPDX - IAD

1 stop7h 02mHawaiian Airlines

Thu 9/186:09 pmIAD - PDX

1 stop7h 35mHawaiian Airlines

Deal found 6/10

$296

Tue 8/512:40 amPDX - IAD

1 stop7h 14mDelta

Wed 8/137:35 amIAD - PDX

1 stop8h 20mDelta

Deal found 6/11

$297

Mon 8/45:30 amPDX - IAD

1 stop9h 08mAmerican Airlines

Tue 8/126:27 amIAD - PDX

1 stop9h 27mAmerican Airlines

Deal found 6/10

$299

Thu 7/1711:55 pmPDX - IAD

1 stop9h 34mSun Country Air

Sat 7/1912:46 pmIAD - PDX

1 stop22h 30mSun Country Air

Deal found 6/10

$305

Wed 9/242:30 pmPDX - IAD

1 stop6h 50mAlaska Airlines

Sat 10/256:25 amIAD - PDX

1 stop9h 00mAlaska Airlines

Deal found 6/10

$306

Fri 7/1811:59 pmPDX - IAD

1 stop8h 44mMultiple Airlines

Sun 7/203:53 pmIAD - PDX

2 stops19h 39mMultiple Airlines

Deal found 6/10

$309

Fri 7/1111:00 amPDX - IAD

1 stop16h 34mFrontier

Mon 7/147:30 amIAD - PDX

1 stop8h 21mFrontier

Deal found 6/11

$310

Tue 8/198:15 amPDX - IAD

Nonstop5h 05mUnited Airlines

Tue 8/265:33 pmIAD - PDX

Nonstop5h 30mUnited Airlines

Deal found 6/11

$317

Fri 8/18:22 amPDX - IAD

2 stops26h 33mAllegiant Air

Sun 8/33:53 pmIAD - PDX

2 stops19h 39mAllegiant Air

Deal found 6/10

$324

Thu 11/610:50 amPDX - IAD

2 stops9h 40mSouthwest

Mon 11/107:50 pmIAD - PDX

2 stops18h 00mSouthwest

Deal found 6/10

$373

Last-minute flights from Portland to Dulles Intl
Discover last-minute flight deals from Portland to Dulles Intl. Data last updated June 12, 2025 and is based on user searches.

Thu 6/1911:59 pmPDX - IAD

1 stop8h 20mSun Country Air

Thu 6/266:15 amIAD - PDX

1 stop19h 31mSun Country Air

Deal found 6/11

$450

Thu 6/1912:52 amPDX - IAD

1 stop7h 30mDelta

Tue 6/2412:03 pmIAD - PDX

1 stop6h 51mDelta

Deal found 6/11

$657

Fri 6/208:22 amPDX - IAD

2 stops26h 33mMultiple Airlines

Mon 6/234:54 pmIAD - PDX

3 stops45h 23mMultiple Airlines

Deal found 6/11

$385

Fri 6/205:50 pmPDX - IAD

2 stops18h 26mFrontier

Mon 6/237:30 amIAD - PDX

1 stop8h 25mFrontier

Deal found 6/11

$535

Fri 6/208:22 amPDX - IAD

2 stops26h 33mAllegiant Air

Sun 6/223:58 pmIAD - PDX

2 stops19h 34mAllegiant Air

Deal found 6/10

$558

Fri 6/205:55 pmPDX - IAD

1 stop9h 55mHawaiian Airlines

Tue 6/245:25 pmIAD - PDX

1 stop8h 49mHawaiian Airlines

Deal found 6/10

$656

Fri 6/2011:35 amPDX - IAD

1 stop10h 06mAmerican Airlines

Tue 6/249:10 amIAD - PDX

2 stops10h 35mAmerican Airlines

Deal found 6/10

$662

Fri 6/208:15 amPDX - IAD

Nonstop4h 57mUnited Airlines

Mon 6/235:10 pmIAD - PDX

Nonstop5h 42mUnited Airlines

Deal found 6/11

$737

Sat 6/218:59 pmPDX - IAD

1 stop7h 28mAlaska Airlines

Mon 6/308:19 pmIAD - PDX

1 stop25h 07mAlaska Airlines

Deal found 6/11

$654

Sun 6/225:10 amPDX - IAD

1 stop11h 00mSouthwest

Wed 6/257:25 amIAD - PDX

2 stops13h 00mSouthwest

Deal found 6/10

$779

Fri 7/47:00 amPDX - IAD

1 stop9h 19mHawaiian Airlines

Tue 8/125:25 pmIAD - PDX

1 stop8h 49mHawaiian Airlines

Deal found 6/12

$326

Fri 7/49:55 pmPDX - IAD

1 stop9h 42mAmerican Airlines

Tue 8/126:27 amIAD - PDX

2 stops10h 54mAmerican Airlines

Deal found 6/12

$332

One-way flights from Portland to Dulles Intl
Search for one-way flight options from Portland to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Thu 11/610:50 amPDX - IAD

2 stops9h 40mSouthwest

Deal found 6/10

$154

Sat 10/257:41 pmPDX - IAD

1 stop7h 14mHawaiian Airlines

Deal found 6/10

$155

Fri 7/46:15 pmPDX - IAD

1 stop14h 28mSun Country Air

Deal found 6/10

$158

Sat 9/205:45 pmPDX - IAD

1 stop9h 15mDelta

Deal found 6/12

$159

Tue 9/910:35 amPDX - IAD

2 stops27h 34mAlaska Airlines

Deal found 6/10

$160

Tue 8/129:59 amPDX - IAD

2 stops9h 57mAmerican Airlines

Deal found 6/12

$164

Fri 8/228:46 amPDX - IAD

2 stops31h 36mAllegiant Air

Deal found 6/11

$165

Wed 8/208:15 amPDX - IAD

Nonstop5h 05mUnited Airlines

Deal found 6/10

$166

Fri 7/1110:23 amPDX - IAD

3 stops31h 30mMultiple Airlines

Deal found 6/11

$171

Sun 7/136:16 pmPDX - IAD

1 stop9h 18mFrontier

Deal found 6/12

$185

Cheapflights 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

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 8/6

7:00 am-7:19 pm

1 stop9h 19m

Washington, D.C. Dulles Intl

Wed 8/13

6:30 am-12:20 pm

1 stop8h 50m

$296

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 8/5

12:40 am-10:54 am

1 stop7h 14m

Washington, D.C. Dulles Intl

Tue 8/12

7:35 am-2:38 pm

1 stop10h 03m

$297

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Mon 8/4

5:30 am-5:38 pm

1 stop9h 08m

Washington, D.C. Dulles Intl

Tue 8/12

6:27 am-12:54 pm

1 stop9h 27m

$299

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 7/17

11:55 pm-12:29 pm

1 stop9h 34m

Washington, D.C. Dulles Intl

Sat 7/19

12:46 pm-8:16 am

1 stop22h 30m

$305

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Thu 8/7

7:00 am-7:19 pm

1 stop9h 19m

Washington, D.C. Dulles Intl

Sat 8/16

7:59 pm-9:45 am

1 stop16h 46m

$306

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 7/18

11:59 pm-11:43 am

1 stop8h 44m

Washington, D.C. Dulles Intl

Sun 7/20

3:53 pm-8:32 am

2 stops19h 39m

$309

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 7/11

11:00 am-6:34 am

1 stop16h 34m

Washington, D.C. Dulles Intl

Mon 7/14

7:30 am-12:51 pm

1 stop8h 21m

$310

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Tue 8/19

8:15 am-4:20 pm

Nonstop5h 05m

Washington, D.C. Dulles Intl

Sat 8/23

5:33 pm-8:03 pm

Nonstop5h 30m

$317

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Fri 8/1

8:22 am-1:55 pm

2 stops26h 33m

Washington, D.C. Dulles Intl

Sun 8/3

3:53 pm-8:32 am

2 stops19h 39m

$324

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

Wed 7/16

5:00 am-6:25 pm

2 stops10h 25m

Washington, D.C. Dulles Intl

Wed 7/23

5:35 pm-12:15 am

1 stop9h 40m

$362

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 20 results

Best time to book a flight from Portland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portland with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Washington, D.C. Dulles Intl Airport

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

To ensure you get the cheapest price possible for a flight from Portland to Washington, D.C. Dulles Intl Airport, you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Portland to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Portland to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Portland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to IAD?

A simple way to save on the total cost of your ticket is to fly from Portland to Washington, D.C. Dulles Intl Airport at noon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Portland to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Portland to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portland to Washington, D.C. Dulles Intl Airport

The most flights from PDX to IAD are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Dulles Intl by month

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Portland to Washington, D.C., such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,287 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,950 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.9

Good

2,494 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,790 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly from for flights from Portland to Washington, D.C. Dulles Intl?
For a flight from Portland to Washington, D.C. Dulles Intl, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 1 outbound flight to Washington, D.C. Dulles Intl per day. 5 airlines have flights to Washington, D.C. Dulles Intl from Portland on a regular basis.
What are the cheapest airlines flying from Portland to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from Portland to Washington, D.C. Dulles Intl Airport round-trip from $296. Other airlines that can offer you cheap pricing are Delta, from $297, and American Airlines, from $299. Hawaiian Airlines is currently priced 42% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Portland to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from Portland to Washington, D.C. Dulles Intl Airport are Southwest ($154), Hawaiian Airlines ($155), and Sun Country Air ($158).
What are the cheapest flights from Portland to Washington, D.C. Dulles Intl Airport?
While on average a flight from Portland to Washington, D.C. Dulles Intl Airport is generally $1,439, our data shows the cheapest flight currently is $168. When looking at the most popular route, (Portland - Washington, D.C. Dulles Intl), you can expect to pay $296 for that flight.
Can I find deals for flights from Portland to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Portland to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Dulles Intl.
Can I find deals for business class flights from Portland to Dulles Intl?
Yes. Cheapflights offers flight deals from Portland to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Portland to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Portland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Arlington

Alexandria

Woodbridge

Tysons

Silver Spring

Linthicum Heights

Fredericksburg

Gaithersburg

Fairfax

Falls Church

Easton

Herndon

Towson

Sterling

Bowie

Rockville

Reston

National Harbor

Springfield

Manassas

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Portland to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$297	Average$411	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$298	Average$406	FlexibilityNo cancel fee	On-time71%
Alaska Airlines	Cheapest$337	Average$549	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$356	Average$473	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$364	Average$534	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$154+ Cheap flights from Portland (PDX) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Portland to Washington, D.C. Dulles Intl are usually found in February or April, booked 89 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Portland to Dulles Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Portland to Dulles Intl

Cheapest flights from Portland to Dulles IntlExplore the most affordable flight options available from Portland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Portland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights 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.

Best time to book a flight from Portland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portland to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Dulles Intl. Price data was last updated on June 9, 2025.

What is the cheapest month to book a flight from Portland to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from PDX to IAD?

Find hourly flight availability from Portland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

What is the cheapest day to fly from Portland to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Portland to Dulles Intl. Price data was last updated on June 8, 2025.

Weekly flight availability from Portland to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Portland to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Portland to Washington, D.C., such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portland to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Portland to Washington, D.C. Dulles Intl?

What are the cheapest airlines flying from Portland to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from Portland to Washington, D.C. Dulles Intl Airport one-way?

What are the cheapest flights from Portland to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Portland to Dulles Intl that include hotel bookings?

How can I find direct flights from Portland to Dulles Intl?

Can I find deals for business class flights from Portland to Dulles Intl?

What is the cheapest month to book a flight from Portland to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Portland?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Portland to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Portland to Dulles Intl
Explore the most affordable flight options available from Portland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.