$376 Cheap Alaska Airlines flights Phoenix (PHX) to Washington (IAD)

View $376 flight on Fri, May 22, 2026Opens in a new window

$376 Cheap Alaska Airlines flights Phoenix (PHX) to Washington (IAD)

Prices were available within the past 7 days and start at $376 for one-way flights and $365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Jan 13 - Thu, Jan 15
PHX
Phoenix
IAD
Washington
$365 Roundtrip, found 6 days ago
$365
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Jan 13 from Phoenix to Washington, returning Thu, Jan 15, priced at $365 found 6 days ago

Find the cheapest month to fly from Phoenix (PHX) to Washington (IAD)

August is typically the cheapest month to fly

From $135 - $386 per traveler.
Flights from Phoenix (PHX) to Washington (IAD)
Origin airport
Sky Harbor Intl.
Destination airport
Washington Dulles Intl.
Distance
3123 km
Average flight time
8 hours 4 mins