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$189+ Cheap flights from Dulles Intl (IAD) to Portland (PDX)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PDX
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Find cheap flights from Dulles Intl to Portland with Cheapflights

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Portland are usually found in January or February, booked 47 days in advance, depart on a Wednesday or Saturday and return on a Wednesday

Cheap flight deals from Dulles Intl to Portland

Cheapest flights from Dulles Intl to Portland
Explore the most affordable flight options available from Dulles Intl to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:59 am
IAD
-
PDX
1 stop30h 53m
Frontier
Mon 8/316:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/24$317
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:50 am
IAD
-
PDX
1 stop10h 04m
Frontier
Mon 8/246:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/25$319
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:59 am
IAD
-
PDX
1 stop11h 22m
Frontier
Mon 8/316:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/25$323
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:39 pm
IAD
-
PDX
2 stops23h 32m
Frontier
Mon 8/246:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/25$326
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:35 am
IAD
-
PDX
1 stop32h 01m
Multiple Airlines
Fri 9/2510:20 am
PDX
-
IAD
1 stop24h 49m
Multiple Airlines
Deal found 7/25$328
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:24 pm
IAD
-
PDX
2 stops24h 47m
Frontier
Mon 8/316:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/24$330
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:59 am
IAD
-
PDX
1 stop30h 53m
Frontier
Sat 8/2912:20 pm
PDX
-
IAD
2 stops16h 44m
Frontier
Deal found 7/26$332
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:59 am
IAD
-
PDX
1 stop30h 53m
Frontier
Mon 8/246:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/27$334
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:59 am
IAD
-
PDX
1 stop11h 22m
Frontier
Thu 8/271:47 pm
PDX
-
IAD
1 stop15h 17m
Frontier
Deal found 7/25$335
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:39 pm
IAD
-
PDX
2 stops23h 32m
Frontier
Thu 9/31:47 pm
PDX
-
IAD
1 stop15h 17m
Frontier
Deal found 7/24$336
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:59 am
IAD
-
PDX
1 stop30h 53m
Frontier
Mon 8/316:17 pm
PDX
-
IAD
1 stop10h 47m
Frontier
Deal found 7/27$337

Find flight deals from Dulles Intl to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Portland (PDX). 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(Kiwi.com)

One-way from

$189
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$557

Good round-trip deal

$447 or less

Good one-way deal

$284 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Portland flights.
Search Deals
From Washington, D.C. Dulles Intl to Portland
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Portland
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Portland.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Portland.
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 11/25

1:00 pm-7:08 pm

1 stop9h 08m

Portland

Fri 11/27

11:39 am-11:33 pm

1 stop8h 54m

$377

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 10/7

7:05 am-12:09 pm

1 stop8h 04m

Portland

Sun 10/11

10:15 pm-11:50 am

1 stop10h 35m

$403

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Mon 10/5

3:15 pm-9:47 pm

1 stop9h 32m

Portland

Sun 10/11

10:15 pm-11:50 am

1 stop10h 35m

$403

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Thu 8/20

6:10 am-10:26 am

1 stop7h 16m

Portland

Mon 8/24

11:20 pm-10:23 am

1 stop8h 03m

$407

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Wed 10/7

7:24 pm-6:18 pm

1 stop25h 54m

Portland

Thu 10/15

12:18 pm-11:59 pm

1 stop8h 41m

$451
Quickest round-trip

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Mon 9/21

5:33 pm-8:10 pm

Nonstop5h 37m

Portland

Sun 9/27

8:25 am-4:27 pm

Nonstop5h 02m

$457

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sun 10/4

7:02 am-1:24 pm

1 stop9h 22m

Portland

Sat 10/17

11:03 am-11:59 pm

1 stop9h 56m

$459

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Fri 10/9

7:24 pm-9:31 am

1 stop17h 07m

Portland

Mon 10/12

9:03 am-5:50 pm

1 stop29h 47m

$463

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Thu 10/8

7:02 am-11:36 am

1 stop7h 34m

Portland

Tue 10/13

1:49 pm-5:50 pm

1 stop25h 01m

$475

Washington, D.C.Portland

IAD - PDX

IADPDX

Washington, D.C. Dulles Intl

Sun 9/6

6:42 am-2:47 pm

1 stop11h 05m

Portland

Tue 9/15

8:25 am-4:26 pm

Nonstop5h 01m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 21 resultsSorted by cheapest first
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Compare providers for flights from Dulles Intl to Portland

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 Dulles Intl to Portland in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Washington, D.C. Dulles Intl Airport-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Portland flights, Cheapflights users trust FlightHub the most. FlightHub 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 Washington, D.C. Dulles Intl Airport-Portland 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 Dulles Intl to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Portland

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Portland, you should look to book at least 46 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 Washington, D.C. Dulles Intl Airport to Portland?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland (average of $346). Flying from Washington, D.C. Dulles Intl Airport to Portland in December is currently the most expensive (average of $637). 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 IAD to PDX?

Find hourly flight availability from Dulles Intl to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Portland as you normally would.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Portland?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Portland flights typically cost between $447 and $614 in August.
The cheapest round-trip price found within the last 5 days was $317 on Frontier (Aug 22-Aug 31).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated July 28, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Portland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,726 reviews

Food

7.0

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
7.9
Good
12,726 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Food

7.0

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Delta
7.8
Good
8,486 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Food

7.0

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
United Airlines
7.4
Good
10,050 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Food

7.0

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Portland. 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 into for flights to Portland from Washington, D.C. Dulles Intl?

    Portland (PDX) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Portland. You should not have trouble finding flights to Portland from Washington, D.C. Dulles Intl; the airport handles an average of 1 inbound flight from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Portland airport from Washington, D.C. Dulles Intl. It is only a 6.0 mi journey from Portland (PDX) to Portland’s city center.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Portland can take about 30h 53m. Frontier provides one of the quickest options available for as low as $317. Airlines will cover a distance of 2320 mi.

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

    Delta, at $226, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Portland.Alternate airlines to your destination round-trip include Alaska Airlines and United Airlines. Delta is priced at 51% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $125. However, be on the lookout for offers from Delta and Frontier, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Portland for a low price.

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

    On average you can expect to pay $431 for a flight from Washington, D.C. Dulles Intl Airport to Portland. The cheapest flight overall is $253 while the most popular route, (Washington, D.C. Dulles Intl - Portland) is currently priced at $367.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Portland 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 Washington, D.C. Dulles Intl Airport to Portland?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portland (average of $346). Flying from Washington, D.C. Dulles Intl Airport to Portland in December is currently the most expensive (average of $637). 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 Portland?

Book flights to Portland if you plan to visit one of these locations
Beaverton
Seaside
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Kelso
Clackamas
Troutdale
Cannon Beach
McMinnville
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Gresham
Silverton

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Dulles Intl to Portland

Discover the top 3 airlines that operate flights from Dulles Intl to Portland. 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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$226Average$437FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$276Average$508FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$297Average$508FlexibilityNo cancel feeOn-time69%

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