$220 Cheap Alaska Airlines flights Portland (PDX) to Washington (IAD)

View $220 flight on Sun, May 24, 2026Opens in a new window

$220 Cheap Alaska Airlines flights Portland (PDX) to Washington (IAD)

Prices were available within the past 7 days and start at $220 for one-way flights and $461 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Sep 26 - Thu, Oct 15
PDX
Portland
IAD
Washington
$461 Roundtrip, found 5 days ago
$461
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Sep 26 from Portland to Washington, returning Thu, Oct 15, priced at $461 found 5 days ago
Alaska Airlines
Thu, May 21 - Wed, May 27
PDX
Portland
IAD
Washington
$466 Roundtrip, found 1 day ago
$466
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, May 21 from Portland to Washington, returning Wed, May 27, priced at $466 found 1 day ago

Find the cheapest month to fly from Portland (PDX) to Washington (IAD)

May is typically the cheapest month to fly

From $208 - $476 per traveler.

Travel information

Origin airport
Portland Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Popular airline
Frontier Airlines
Distance
3713 km
Average flight time
5 hours 12 mins

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