What is the cheapest month to fly from Phoenix to Dulles?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Phoenix (PHX) to Dulles (IAD), with fares starting from $245.

What is the lowest current fare from PHX to IAD?

The lowest currently-listed fare from Phoenix (PHX) to Dulles (IAD) is $245 on 2026-05-25.

Direct flights from PHX to IAD cover approximately 3,141 km (1,952 miles), with an estimated flight time of 3h 42m. Operating airlines: UA, WN.

Cheapest current fares: $245 in May 2026, 3,141 km direct flight in ~3h 42m.

Last updated May 24, 2026 · By Flightmaps Editorial

Lowest available fare per calendar month from Phoenix (PHX) to Dulles (IAD). Refreshed daily.

What is the cheapest month to fly from Phoenix to Dulles?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Phoenix (PHX) to Dulles (IAD), with fares starting from $245.
What is the lowest current fare from PHX to IAD?

The lowest currently-listed fare from Phoenix (PHX) to Dulles (IAD) is $245 on 2026-05-25.
How long is the flight from Phoenix to Dulles?

Direct flights from PHX to IAD cover approximately 3,141 km (1,952 miles), with an estimated flight time of 3h 42m. Operating airlines: UA, WN.

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