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$162+ Cheap flights from Dulles Intl (IAD) to Phoenix

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHX
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Phoenix are usually found in January or October, booked 62 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Phoenix

Cheapest flights from Dulles Intl to Phoenix
Explore the most affordable flight options available from Dulles Intl to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:59 am -
1 stop30h 49m
Sun 9/66:57 pm -
2 stops13h 46m
Deal found 8/5$327
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:36 pm -
2 stops32h 48m
Sun 9/277:24 pm -
1 stop7h 56m
Deal found 8/5$328
This CheapOair deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:00 pm -
1 stop30h 56m
Sun 10/2510:40 pm -
1 stop28h 40m
Deal found 8/7$329
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:24 pm -
2 stops17h 47m
Sat 8/2910:09 pm -
1 stop6h 55m
Deal found 8/5$330
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:59 am -
1 stop17h 25m
Mon 9/712:29 am -
2 stops16h 15m
Deal found 8/9$331
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:53 pm -
1 stop17h 18m
Mon 10/126:36 pm -
2 stops20h 00m
Deal found 8/9$332
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:03 am -
1 stop7h 37m
Sun 11/85:14 pm -
1 stop17h 21m
Deal found 8/6$333
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop9h 22m
Mon 9/2812:04 pm -
2 stops19h 13m
Deal found 8/10$334
This Trip.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:30 pm -
1 stop12h 20m
Sun 10/47:24 pm -
1 stop7h 56m
Deal found 8/7$335
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/308:39 pm -
2 stops27h 49m
Tue 9/87:35 pm -
1 stop15h 34m
Deal found 8/9$336
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:01 am -
1 stop7h 52m
Mon 10/266:00 am -
2 stops15h 28m
Deal found 8/10$337
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:59 am -
1 stop7h 00m
Fri 9/117:24 pm -
1 stop7h 56m
Deal found 8/10$338

Find flight deals from Dulles Intl to Phoenix

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Phoenix (PH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 10, 2026.

Round-trip from

$327
(Kiwi.com)

One-way from

$162
(eDestinos)

Popular in

March

Cheapest in

January

Average price

$445
From Washington, D.C. Dulles Intl to Phoenix
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One-way flight from Washington, D.C. Dulles Intl to Phoenix
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Phoenix that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Sat 10/31

8:20 am-10:33 am

Nonstop5h 13m

Phoenix Sky Harbor Intl

Thu 11/5

11:59 pm-6:08 am

Nonstop4h 09m

$339

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Sat 9/26

6:00 pm-7:54 pm

Nonstop4h 54m

Phoenix Sky Harbor Intl

Mon 9/28

12:15 pm-10:30 pm

1 stop7h 15m

$345

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Sun 10/25

7:02 am-3:10 pm

1 stop11h 08m

Phoenix Sky Harbor Intl

Wed 10/28

7:38 am-5:50 pm

1 stop7h 12m

$358

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Thu 8/27

8:28 am-12:08 pm

1 stop6h 40m

Phoenix Sky Harbor Intl

Mon 8/31

11:56 pm-11:33 am

1 stop8h 37m

$359

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Wed 10/7

6:59 pm-11:21 pm

1 stop7h 22m

Phoenix Sky Harbor Intl

Mon 10/12

10:45 pm-11:50 am

1 stop10h 05m

$359

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Wed 8/26

3:03 pm-8:56 pm

1 stop8h 53m

Phoenix Sky Harbor Intl

Sat 8/29

1:30 pm-12:34 am

1 stop8h 04m

$359

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Wed 9/9

6:00 pm-7:54 pm

Nonstop4h 54m

Phoenix Sky Harbor Intl

Sat 9/12

8:55 am-4:23 pm

Nonstop4h 28m

$439

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Sat 10/17

8:35 am-10:26 am

Nonstop4h 51m

Phoenix Sky Harbor Intl

Wed 10/21

12:15 pm-10:30 pm

1 stop7h 15m

$445

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Mon 11/2

10:00 am-3:28 pm

1 stop7h 28m

Phoenix Sky Harbor Intl

Thu 11/5

3:08 pm-9:23 pm

Nonstop4h 15m

$447

Washington, D.C.Phoenix

IAD Washington, D.C. Dulles Intl - PHX Phoenix Sky Harbor Intl

IADPHX

Washington, D.C. Dulles Intl

Wed 9/30

7:00 am-5:40 pm

2 stops13h 40m

Phoenix Sky Harbor Intl

Mon 10/5

7:24 pm-5:50 pm

1 stop19h 26m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Phoenix

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Phoenix?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix (average of $430). Flying from Washington, D.C. Dulles Intl Airport to Phoenix in March is currently the most expensive (average of $583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to PHX?

Find hourly flight availability from Dulles Intl to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 10, 2026.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Phoenix in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Phoenix?

Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Phoenix flights typically cost between $338 and $537 in September.
The cheapest round-trip price found within the last 5 days was $327 on Frontier (Sep 2-Sep 6).

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Phoenix?

The best time to book flights from Washington, D.C. Dulles Intl Airport to Phoenix is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Phoenix?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Phoenix. Price data was last updated on August 8, 2026.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Phoenix flight should consider departing on Tuesday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Phoenix. Reviews last updated August 10, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Washington, D.C. Dulles Intl Airport to Phoenix. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
Southwest
8.0
Very good
4,218 reviews
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
Delta
7.8
Good
8,497 reviews
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
United Airlines
7.4
Good
10,095 reviews
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
American Airlines
7.1
Good
11,897 reviews
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.
Frontier
5.6
Fair
2,713 reviews
Southwest
8.0
Very good
4,218 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Sherrie,Jan 2024

LAX - PHX

It was a great flight overall. It took a long time to take off. We spent a long time waiting on the plane before departure.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Phoenix. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Phoenix?

    United Airlines, Alaska Airlines, and Delta can get you from Washington, D.C. Dulles Intl Airport to Phoenix in just under 5h 13m. Your travel time can differ by up to 5h 55m. There are 1950 mi between Washington, D.C. Dulles Intl Airport and Phoenix. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Phoenix round-trip?

    According to our current data, Frontier ($158), Delta ($243), and Alaska Airlines ($252) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Phoenix. Frontier is currently priced 66% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Phoenix one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $74. Users have also found prices from $108 and $113 on Alaska Airlines and Southwest, respectively.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Phoenix?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Phoenix are Southwest (100%), Austrian Airlines (77%) and Avianca (77%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Phoenix?

    While on average a flight from Washington, D.C. Dulles Intl Airport to Phoenix is generally $501, our data shows the cheapest flight currently is $159. When looking at the most popular route, (Washington, D.C. Dulles Intl - Phoenix Sky Harbor Intl), you can expect to pay $187 for that flight.

  • Can I find deals for flights from Dulles Intl to Phoenix that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Phoenix flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Phoenix?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Phoenix.

  • Can I find deals for business class flights from Dulles Intl to Phoenix?

    Yes. Cheapflights offers flight deals from Dulles Intl to Phoenix by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Phoenix?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix (average of $430). Flying from Washington, D.C. Dulles Intl Airport to Phoenix in March is currently the most expensive (average of $583). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Dulles Intl to Phoenix

Discover the top 6 airlines that operate flights from Dulles Intl to Phoenix. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$158Average$285FlexibilityNo cancel feeOn-time62%
DeltaCheapest$243Average$338FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$252Average$326FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$277Average$490FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$297Average$500FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$376Average$548FlexibilityNo cancel feeOn-time71%

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