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Find low faresSouthwest® flights from Washington, D.C. (Dulles) to Phoenix from $143
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Low fares from Washington, D.C. (Dulles) to Phoenix
$
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 02/28/2026
One-way
Basic
From
$143
Seen: 8 hrs ago
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 02/21/2026
One-way
Basic
From
$143
Seen: 8 hrs ago
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 04/15/2026
One-way
Basic
From
$153
Seen: 19 hrs ago
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 05/05/2026
One-way
Basic
From
$153
Seen: 8 hrs ago
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 03/03/2026
One-way
Basic
From
$153
Seen: 16 hrs ago
Washington, D.C. (Dulles) (IAD)to
Phoenix (PHX)
Depart: 03/10/2026
One-way
Basic
From
$153
Seen: 15 hrs ago
Explore flights from Washington, D.C. (Dulles) to Phoenix
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Flight Details
Departing from:
Dulles International Airport
Arriving at:
Sky Harbor International Airport
Average flight time:
4 hours 47 minutes
Distance:
1956 miles
Route Information
26† Weekly flights
- 1‡ Nonstop flight per day Monday through Friday
- 1‡ Nonstop flight on Saturday
- 1‡ Nonstop flight on Sunday
† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.
‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.
Questions we hear the most
The average flight time from Washington, D.C. (Dulles) to Phoenix is 4 hours 47 minutes.
There are 26 weekly flights from Washington, D.C. (Dulles) to Phoenix on Southwest Airlines.
Yes, Southwest flies nonstop from Washington, D.C. (Dulles) to Phoenix once per day from Monday through Friday.
Yes, Southwest flies nonstop from Washington, D.C. (Dulles) to Phoenix once per day on Saturdays and Sundays.
To find the lowest fares by day and time to fly Washington, D.C. (Dulles) to Phoenix with Southwest, check out our Low Fare Calendar.
You can rent a car at Sky Harbor International Airport book yours with your flight.
Yes! Flights from Washington, D.C. (Dulles) to Phoenix—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.