$157 Cheap Frontier Airlines flights Phoenix (PHX) to Washington (IAD)

View $157 flight on Sun, Jan 11, 2026Opens in a new window

$157 Cheap Frontier Airlines flights Phoenix (PHX) to Washington (IAD)

Prices were available within the past 7 days and start at $157 for one-way flights and $247 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sun, Jan 11 - Mon, Jan 12
PHX
Phoenix
IAD
Washington
$247 Roundtrip, found 2 days ago
$247
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Jan 11 from Phoenix to Washington, returning Mon, Jan 12, priced at $247 found 2 days ago
Frontier Airlines
Sun, Jan 11 - Mon, Jan 12
PHX
Phoenix
IAD
Washington
$385 Roundtrip, found 2 days ago
$385
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Jan 11 from Phoenix to Washington, returning Mon, Jan 12, priced at $385 found 2 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