$190+ Cheap flights from Portland (PDX) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — IAD
Nov 22 — Nov 291
Round-trip
1 adult, Economy
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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 January or February, booked 82 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from Portland to Dulles Intl
Cheapest
Best
Last-minute
One-way
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 October 23, 2026.
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 October 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/307:25 pm -
1 stop31h 42m
Wed 1/65:30 am -
2 stops37h 12m
Deal found 10/22![Frontier logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/1912:02 pm -
2 stops21h 12m
Mon 11/231:09 pm -
1 stop31h 25m
Deal found 10/21![Frontier logo]()
$370
This Expedia deal was found by Cheapflights users on 10/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:25 pm -
1 stop7h 42m
Thu 12/317:13 pm -
2 stops21h 35m
Deal found 10/20![Multiple Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Mon 11/912:31 pm -
2 stops25h 36m
Deal found 10/22![Multiple Airlines logo]()
$374
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Mon 11/96:00 am -
1 stop14h 30m
Sat 11/147:18 am -
1 stop15h 14m
Deal found 10/19![American Airlines logo]()
$375
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/237:25 pm -
1 stop7h 42m
Tue 12/298:51 pm -
1 stop24h 39m
Deal found 10/20![Frontier logo]()
$377
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:02 pm -
2 stops20h 34m
Fri 11/206:50 am -
2 stops29h 42m
Deal found 10/22![Frontier logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/2210:28 pm -
1 stop28h 39m
Wed 12/3010:59 pm -
2 stops16h 10m
Deal found 10/22![Frontier logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Mon 11/167:32 am -
2 stops30h 35m
Deal found 10/22![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Tue 11/1712:31 pm -
2 stops50h 05m
Deal found 10/22![Multiple Airlines logo]()
$384
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:02 pm -
2 stops20h 34m
Sun 11/157:32 am -
2 stops29h 39m
Deal found 10/20![Frontier logo]()
$386
This CheapOair deal was found by Cheapflights users on 10/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1910:06 pm -
1 stop29h 01m
Mon 12/288:51 pm -
1 stop27h 42m
Deal found 10/22![Frontier logo]()
$389
Best flights from Portland to Dulles IntlDiscover 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 October 23, 2026.
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 October 23, 2026.
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 12/227:12 pm -
1 stop7h 07m
Thu 12/315:33 pm -
Nonstop6h 04m
Deal found 10/20![United Airlines logo]()
$487
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/217:40 pm -
1 stop6h 51m
Sun 4/257:00 am -
1 stop8h 22m
Deal found 10/22![Alaska Airlines logo]()
$497
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:20 pm -
1 stop8h 37m
Fri 11/203:00 pm -
1 stop9h 57m
Deal found 10/20![Delta logo]()
$497
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Wed 12/2311:50 pm -
1 stop9h 04m
Sun 1/35:33 pm -
Nonstop6h 04m
Deal found 10/20![United Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 10/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/61:38 pm -
1 stop7h 13m
Wed 2/107:30 am -
1 stop7h 54m
Deal found 10/19![Delta logo]()
$527
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:30 am -
1 stop28h 09m
Sat 12/197:13 pm -
1 stop17h 16m
Deal found 10/20![Alaska Airlines logo]()
$588
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 11/168:30 am -
Nonstop4h 52m
Thu 11/195:19 pm -
Nonstop5h 56m
Deal found 10/22![United Airlines logo]()
$537
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2210:25 pm -
1 stop8h 23m
Sat 1/24:30 pm -
1 stop8h 49m
Deal found 10/22![Delta logo]()
$598
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Mon 11/168:30 am -
Nonstop4h 52m
Tue 11/1710:15 am -
1 stop8h 08m
Deal found 10/21![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 12/2311:42 pm -
Nonstop4h 53m
Tue 12/293:30 pm -
1 stop10h 37m
Deal found 10/21![United Airlines logo]()
$553
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Thu 12/3110:45 am -
1 stop7h 28m
Sat 1/25:33 pm -
Nonstop6h 04m
Deal found 10/18![United Airlines logo]()
$613
Last-minute flights from Portland to Dulles IntlDiscover last-minute flight deals from Portland to Dulles Intl. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Dulles Intl. Data last updated October 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Mon 11/912:31 pm -
2 stops25h 36m
Deal found 10/22![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Mon 11/167:32 am -
2 stops30h 35m
Deal found 10/22![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/610:25 am -
1 stop23h 44m
Tue 11/1712:31 pm -
2 stops50h 05m
Deal found 10/22![Multiple Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Mon 11/96:00 am -
1 stop14h 30m
Sat 11/147:18 am -
1 stop15h 14m
Deal found 10/19![American Airlines logo]()
$375
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:02 pm -
2 stops20h 34m
Sun 11/157:32 am -
2 stops29h 39m
Deal found 10/20![Frontier logo]()
$386
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:02 pm -
2 stops20h 34m
Sat 11/149:06 pm -
2 stops17h 06m
Deal found 10/22![Frontier logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/1612:31 pm -
2 stops25h 41m
Mon 11/231:09 pm -
1 stop31h 25m
Deal found 10/21![Frontier logo]()
$391
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:02 pm -
2 stops20h 34m
Fri 11/206:50 am -
2 stops29h 42m
Deal found 10/22![Frontier logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/1912:02 pm -
2 stops21h 12m
Mon 11/231:09 pm -
1 stop31h 25m
Deal found 10/21![Frontier logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/231:31 pm -
1 stop12h 39m
Wed 11/2510:47 pm -
2 stops17h 10m
Deal found 10/21![Frontier logo]()
$405
One-way flights from Portland to Dulles IntlSearch for one-way flight options from Portland to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Portland to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:51 pm -
2 stops18h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$190
This Super.com deal was found by Cheapflights users on 10/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:23 am -
1 stop14h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$193
This Cheapflightsfares deal was found by Cheapflights users on 10/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:10 pm -
1 stop27h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 10/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:58 pm -
1 stop12h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 11/1512:07 pm -
3 stops26h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$198
This Frontier deal was found by Cheapflights users on 10/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/217:03 pm -
1 stop8h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$199
This Super.com deal was found by Cheapflights users on 10/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2211:23 am -
1 stop14h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$202
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/101:58 pm -
2 stops24h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 11/1512:07 pm -
2 stops19h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$211
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Mon 11/96:00 am -
1 stop14h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![American Airlines logo]()
$212
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 October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $368 (Kiwi.com) |
One-way from | $190 (Mytrip) |
Popular in | November |
Cheapest in | January |
Average price | $567 |
Good round-trip deal | $517 or less |
Good one-way deal | $246 or less |
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 7,457,451 searches. Data last updated October 23, 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
Cheapest round-trip
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Tue 12/1
5:53 pm-5:39 pm
2 stops20h 46m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$228
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Tue 1/5
1:38 pm-11:51 pm
1 stop7h 13m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$249
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Fri 11/13
7:35 pm-5:44 am
1 stop7h 09m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$249
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Sat 11/14
11:58 am-11:21 pm
1 stop8h 23m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$249
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Mon 12/14
1:30 pm-11:47 pm
1 stop7h 17m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$264
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Thu 11/12
1:30 pm-11:47 pm
1 stop7h 17m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$264
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Tue 12/15
1:30 pm-11:47 pm
1 stop7h 17m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$264
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Tue 11/17
12:35 am-11:18 am
1 stop7h 43m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$264
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Fri 1/1
11:42 pm-7:35 am
Nonstop4h 53m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
Quickest round-trip
PortlandWashington, D.C.
PDX Portland - IAD Washington, D.C. Dulles Intl
PDXIAD
Portland
Sat 11/14
8:30 am-4:22 pm
Nonstop4h 52m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$269
Showing 1-10 of 21 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >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 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 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.
PDX-IAD
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 80 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, January is the cheapest month in which you can book a flight from Portland to Washington, D.C. Dulles Intl Airport (average of $277). Flying from Portland to Washington, D.C. Dulles Intl Airport in November is currently the most expensive (average of $587). 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 October 23, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland to Washington, D.C. Dulles Intl Airport as you normally would.
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 October 23, 2026.
Read through reviews of airlines operating flights from Portland to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Entertainment
7.0
Food
7.0
Comfort
7.8
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
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.
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 locationsAlexandria
Chantilly
Woodbridge
Arlington
Owings Mills
Lanham
Sterling
Reston
Herndon
Hyattsville
Rockville
Springfield
Fredericksburg
Falls Church
Tysons
Towson
Oxon Hill
Laurel
Clinton
Hunt Valley
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Other flights to Dulles Intl
Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
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Portland and Dulles Intl flights
Browse other Portland and Dulles Intl flight options. Last updated on October 23, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Portland to Dulles Intl
Discover the top 3 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 7,457,451 searches. Data last updated October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$138 | Average$402 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$223 | Average$430 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$322 | Average$528 | FlexibilityNo cancel fee | On-time69% |