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Dulles Intl

$153+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IAD
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Washington, D.C. Dulles Intl are usually found in January or November, booked 50 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap 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 diciembre 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2911:55 pmPDX - IAD
1 stop8h 50mUnited Airlines
mar. 1/66:20 amIAD - PDX
1 stop10h 25mUnited Airlines
Deal found 12/11$437
This Southwest deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/299:00 pmPDX - IAD
1 stop13h 05mSouthwest
mar. 1/64:30 pmIAD - PDX
1 stop9h 00mSouthwest
Deal found 12/10$442
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2910:21 pmPDX - IAD
1 stop7h 21mAmerican Airlines
jue. 1/81:08 pmIAD - PDX
1 stop10h 16mAmerican Airlines
Deal found 12/11$457
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/3010:52 pmPDX - IAD
Nonstop4h 58mUnited Airlines
vie. 1/25:50 pmIAD - PDX
Nonstop5h 58mUnited Airlines
Deal found 12/11$487
This United Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/257:10 amPDX - IAD
1 stop11h 11mUnited Airlines
dom. 1/45:20 pmIAD - PDX
1 stop8h 39mUnited Airlines
Deal found 12/11$524
This United Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/266:27 pmPDX - IAD
1 stop7h 52mUnited Airlines
mié. 12/315:50 pmIAD - PDX
Nonstop5h 58mUnited Airlines
Deal found 12/9$541

Find flight deals from Portland to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$296
(American Airlines)

One-way from

$153
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$480

Good round-trip deal

$480 or less

Good one-way deal

$238 or less
Provider with most accurate pricing for Portland-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-Washington, D.C. Dulles Intl flights.
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From Portland to Washington, D.C. Dulles Intl
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One-way flight from Portland to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Portland to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Portland to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
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

Portland

Fly to

Dulles Intl

Route

Depart

Return

Price

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

jue. 1/1

10:52 pm-6:50 am

Nonstop4h 58m

Washington, D.C. Dulles Intl

mar. 1/6

6:03 am-12:18 pm

1 stop9h 15m

$307

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

dom. 2/8

5:40 pm-5:04 pm

1 stop20h 24m

Washington, D.C. Dulles Intl

mié. 2/11

5:26 pm-11:50 pm

1 stop9h 24m

$316

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

mar. 1/6

9:34 pm-5:04 pm

1 stop16h 30m

Washington, D.C. Dulles Intl

dom. 1/11

5:26 pm-11:50 pm

1 stop9h 24m

$316

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

jue. 3/5

9:26 pm-5:27 pm

1 stop17h 01m

Washington, D.C. Dulles Intl

mar. 3/10

6:20 pm-9:50 am

1 stop18h 30m

$316

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

sáb. 2/14

1:32 pm-11:46 pm

1 stop7h 14m

Washington, D.C. Dulles Intl

mar. 2/17

12:38 pm-8:55 pm

2 stops11h 17m

$317

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

sáb. 1/31

1:24 pm-11:22 pm

1 stop6h 58m

Washington, D.C. Dulles Intl

vie. 2/6

5:17 pm-10:32 pm

1 stop8h 15m

$317

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

jue. 1/15

6:00 am-11:12 pm

2 stops14h 12m

Washington, D.C. Dulles Intl

sáb. 1/17

1:08 pm-8:17 pm

1 stop10h 09m

$322

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

jue. 2/19

8:30 am-5:20 pm

1 stop29h 50m

Washington, D.C. Dulles Intl

dom. 2/22

7:05 am-8:49 am

1 stop28h 44m

$326

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

sáb. 1/17

1:30 pm-11:10 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

sáb. 1/24

7:30 am-12:44 pm

1 stop8h 14m

$327

PortlandWashington, D.C.

PDX - IAD

PDXIAD

Portland

mié. 1/28

5:05 am-9:55 pm

2 stops13h 50m

Washington, D.C. Dulles Intl

dom. 2/1

5:30 am-10:15 am

1 stop7h 45m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 23 results
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Compare providers for flights from Portland to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Dulles Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?

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 December 5, 2025.

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 50 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, September is the cheapest month in which you can book a flight from Portland to Washington, D.C. Dulles Intl Airport (average of $226). Flying from Portland to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $376). 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?

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 diciembre 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland to Washington, D.C. Dulles Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 20% 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?

Use this chart to determine the cheapest time to fly round-trip from Portland to Dulles Intl. Price data was last updated on December 6, 2025.

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

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated diciembre 12, 2025.
Read through reviews of airlines operating flights from Portland to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,431 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,431 reviews
Alaska Airlines
8.0
Very good
11,431 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,253 reviews
Alaska Airlines
8.0
Very good
11,431 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,431 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,431 reviews

Comfort

7.8

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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?

    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 0 outbound flights to Washington, D.C. Dulles Intl per day. 4 airlines have flights to Washington, D.C. Dulles Intl from Portland on a regular basis.

  • How long is the flight from Portland to Washington, D.C. Dulles Intl Airport?

    Airlines like United Airlines, Alaska Airlines, and Delta fly from Portland to Washington, D.C. Dulles Intl Airport in about 4h 58m. The time it takes to get you to your destination can typically vary by up to 15h 26m. Airlines will cover a distance of 2320 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $226. Other airlines that can offer you cheap pricing are Alaska Airlines, from $257, and United Airlines, from $311. Delta is currently priced 49% 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 Frontier ($83), Alaska Airlines ($148), and Delta ($148).

  • 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 $842, our data shows the cheapest flight currently is $178. When looking at the most popular route, (Portland - Washington, D.C. Dulles Intl), you can expect to pay $267 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, September is the cheapest month in which you can book a flight from Portland to Washington, D.C. Dulles Intl Airport (average of $226). Flying from Portland to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $376). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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Top 4 airlines flying from Portland to Dulles Intl

Discover the top 4 airlines that operate flights from Portland to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$257Average$442FlexibilityNo cancel feeOn-time75%
DeltaCheapest$277Average$370FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$314Average$476FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$318Average$394FlexibilityNo cancel feeOn-time63%

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