$94 Cheap Flights from Phoenix (PHX) to Washington (IAD)

View $94 flight on Tue, May 13, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Phoenix to Washington (PHX-IAD)

Prices were available within the past 7 days and start at $94 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 24 - Sat, May 31
PHX
Phoenix
IAD
Washington
$188 Roundtrip, just found
$188
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 24 from Phoenix to Washington, returning Sat, May 31, priced at $188 just found
Frontier Airlines
Wed, May 7 - Thu, May 8
PHX
Phoenix
IAD
Washington
$193 Roundtrip, just found
$193
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 7 from Phoenix to Washington, returning Thu, May 8, priced at $193 just found
Hawaiian Airlines
Wed, Sep 10 - Sat, Sep 13
PHX
Phoenix
IAD
Washington
$197 Roundtrip, found 14 hours ago
$197
Roundtrip
found 14 hours ago
Select Hawaiian Airlines flight, departing Wed, Sep 10 from Phoenix to Washington, returning Sat, Sep 13, priced at $197 found 14 hours ago
Frontier Airlines
Wed, May 21 - Thu, May 29
PHX
Phoenix
IAD
Washington
$198 Roundtrip, found 1 hour ago
$198
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, May 21 from Phoenix to Washington, returning Thu, May 29, priced at $198 found 1 hour ago
Frontier Airlines
Sat, May 24 - Sat, May 31
PHX
Phoenix
IAD
Washington
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 24 from Phoenix to Washington, returning Sat, May 31, priced at $208 just found
Frontier Airlines
Sat, May 24 - Sun, May 25
PHX
Phoenix
IAD
Washington
$213 Roundtrip, found 11 hours ago
$213
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from Phoenix to Washington, returning Sun, May 25, priced at $213 found 11 hours ago
Frontier Airlines
Wed, May 28 - Sat, May 31
PHX
Phoenix
IAD
Washington
$214 Roundtrip, found 6 hours ago
$214
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Wed, May 28 from Phoenix to Washington, returning Sat, May 31, priced at $214 found 6 hours ago
Alaska Airlines
Sat, Sep 13 - Tue, Sep 16
PHX
Phoenix
IAD
Washington
$237 Roundtrip, found 14 hours ago
$237
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Sat, Sep 13 from Phoenix to Washington, returning Tue, Sep 16, priced at $237 found 14 hours ago
United
Wed, May 28 - Sat, May 31
PHX
Phoenix
IAD
Washington
$239 Roundtrip, found 6 hours ago
$239
Roundtrip
found 6 hours ago
Select United flight, departing Wed, May 28 from Phoenix to Washington, returning Sat, May 31, priced at $239 found 6 hours ago
Southwest Airlines
Wed, May 21 - Sat, May 24
PHX
Phoenix
IAD
Washington
$269 Roundtrip, found 1 day ago
$269
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, May 21 from Phoenix to Washington, returning Sat, May 24, priced at $269 found 1 day ago

Frequently asked questions

How much does a flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD) cost?
Pick up cheap return fares starting from $239 from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and Southwest Airlines flight leaving PHX on May 17 2025 and touching down at IAD. The price was last updated on April 20 2025 and has not changed since.
What is the cheapest month to fly from PHX to IAD?
The cheapest flights from PHX to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
If you’re departing from Sky Harbor Intl. Airport (PHX), you can take a nonstop flight to Washington Dulles Intl. Airport (IAD) with United Airlines.
What is the cheapest airline that flies from PHX to IAD?
Right now, the cheapest airline operating one-way flights from PHX to IAD is United. You can jet off on this route from $120. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PHX on July 1 2025. Prices were last updated on April 20 2025 and have not changed since.
How many flights per day from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Every day on average, 2 direct flights operate from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD). Pick the departure time that works for you.
What are the most popular departure times for flights from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Flights between PHX and IAD are their busiest at 9 AM. If you want a more relaxed trip and possibly cheaper fares, look for a time outside the usual busy windows.
What day of the week has the most flights from PHX to IAD?
If you travel on a Sunday, you’ll get the widest range of choices for flights from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Hop on the earliest flight at around 9:30AM UTC-7, leaving from Sky Harbor Intl. Airport (PHX). You’ll be traveling for around 4h 15m, reaching Washington Dulles Intl. Airport (IAD) at approximately 3:45PM UTC-5.
How long does it take to fly from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
The average flight duration from PHX to IAD is 4 hours and 11 minutes, covering a total distance of 1,950 mi.
What airline has the least delays from PHX to IAD?
With 89% of journeys typically arriving on time, United Airlines has the best on-time performance for direct flights from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD). To monitor your flight status and receive notifications if anything changes, use the Expedia App.
What is the best time to fly from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Choose a flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Washington from Sky Harbor Intl. Airport (PHX)?
Sky Harbor Intl. Airport (PHX) has direct flights to Washington. These are a few of the airports you can fly to without detours:

  • Ronald Reagan Washington National Airport (DCA)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
  • Washington Dulles Intl. Airport (IAD)

Is it cheaper to buy a plane ticket from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD) last-minute?
Holding off until just before your trip to book a ticket from PHX to IAD generally means paying more. Although you may find some last-minute deals, they aren’t always guaranteed. Be flexible with your travel plans for a better chance of landing a bargain.
Is it cheaper to book a PHX to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking a PHX to IAD flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our wide range of stays, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
If you reserved your PHX to IAD flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.
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