Sky Harbor Intl

$114+ Cheap flights from Dulles Intl (IAD) to Sky Harbor Intl (PHX)

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHX
Aug 25 — Sep 11
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Find cheap flights from Dulles Intl to Sky Harbor Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl are usually found in August or November, booked 64 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to Sky Harbor Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sky Harbor Intl (PHX). 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 20, 2025.

Round-trip from

$221
(Frontier)

One-way from

$114
(Frontier)

Popular in

December

Cheapest in

August

Average price

$329

Good round-trip deal

$297 or less

Good one-way deal

$164 or less
From Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl
One-way flight from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl
Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Phoenix Sky Harbor Intl.

Find flight deals from Dulles Intl to Sky Harbor Intl

Cheapest flights from Dulles Intl to Sky Harbor Intl
Explore the most affordable flight options available from Dulles Intl to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:10 amIAD - PHX
2 stops18h 50mFrontier
Sat 9/139:30 amPHX - IAD
2 stops11h 25mFrontier
Deal found 8/18$221
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:10 amIAD - PHX
2 stops16h 00mFrontier
Sat 9/209:30 amPHX - IAD
2 stops11h 25mFrontier
Deal found 8/18$222
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:10 amIAD - PHX
1 stop8h 22mFrontier
Sun 9/147:40 amPHX - IAD
2 stops13h 35mFrontier
Deal found 8/18$225
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/256:10 amIAD - PHX
1 stop11h 45mFrontier
Wed 9/108:00 amPHX - IAD
2 stops22h 17mFrontier
Deal found 8/18$226
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:59 pmIAD - PHX
2 stops22h 03mFrontier
Mon 9/157:25 amPHX - IAD
2 stops13h 50mFrontier
Deal found 8/18$227
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:15 amIAD - PHX
1 stop11h 50mFrontier
Mon 10/206:00 amPHX - IAD
1 stop15h 11mFrontier
Deal found 8/19$228
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:17 amIAD - PHX
1 stop15h 54mFrontier
Mon 9/296:00 amPHX - IAD
1 stop15h 15mFrontier
Deal found 8/18$229
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:17 amIAD - PHX
1 stop11h 53mFrontier
Mon 9/157:25 amPHX - IAD
2 stops13h 50mFrontier
Deal found 8/18$230
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 10/145:42 pmIAD - PHX
1 stop7h 57mMultiple Airlines
Thu 10/236:00 amPHX - IAD
1 stop6h 39mMultiple Airlines
Deal found 8/18$231
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:15 amIAD - PHX
1 stop11h 50mFrontier
Mon 10/275:15 amPHX - IAD
2 stops15h 56mFrontier
Deal found 8/18$232
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/245:52 pmIAD - PHX
1 stop7h 34mMultiple Airlines
Fri 9/2612:37 pmPHX - IAD
1 stop8h 38mMultiple Airlines
Deal found 8/18$234

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Sky Harbor Intl 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 20, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Sky Harbor Intl

Route

Depart

Return

Price

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sun 10/5

1:55 pm-2:57 pm

1 stop28h 02m

Phoenix Sky Harbor Intl

Sat 10/11

10:59 pm-6:32 pm

1 stop16h 33m

$225

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 10/15

5:42 pm-10:39 pm

1 stop7h 57m

Phoenix Sky Harbor Intl

Thu 10/23

6:00 am-3:39 pm

1 stop6h 39m

$231

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Tue 10/14

5:42 pm-10:39 pm

1 stop7h 57m

Phoenix Sky Harbor Intl

Thu 10/23

6:00 am-3:39 pm

1 stop6h 39m

$231

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sat 10/18

5:42 pm-10:39 pm

1 stop7h 57m

Phoenix Sky Harbor Intl

Thu 10/23

6:00 am-3:39 pm

1 stop6h 39m

$231

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 10/23

4:40 pm-3:05 pm

1 stop25h 25m

Phoenix Sky Harbor Intl

Mon 10/27

6:00 am-12:11 am

1 stop15h 11m

$235

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Fri 11/7

8:36 pm-1:13 pm

2 stops18h 37m

Phoenix Sky Harbor Intl

Sat 11/15

5:15 am-11:55 pm

2 stops16h 40m

$239

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sat 8/23

8:00 am-3:42 pm

1 stop10h 42m

Phoenix Sky Harbor Intl

Mon 8/25

6:00 am-4:30 pm

1 stop7h 30m

$253

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Mon 11/3

6:00 am-3:03 pm

1 stop11h 03m

Phoenix Sky Harbor Intl

Fri 11/7

6:00 am-12:11 am

1 stop16h 11m

$255

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 9/25

10:17 am-7:10 pm

1 stop11h 53m

Phoenix Sky Harbor Intl

Sun 9/28

6:00 am-12:15 am

1 stop15h 15m

$258

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 10/9

6:15 am-3:05 pm

1 stop11h 50m

Phoenix Sky Harbor Intl

Mon 10/13

6:00 am-12:11 am

1 stop15h 11m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 22 results
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The best insider tips for Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to navigate between terminals, but be prepared for some walking from the train to the gates.

Read more about IADby Ramsey Qubein
PHX

For a quick trip to downtown from PHX, consider taking a taxi for a flat rate or use the light rail from 44th Street Station.

Read more about PHXby Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PHX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Dulles Intl to Sky Harbor Intl

Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl 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 Sky Harbor Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Sky Harbor Intl. Price data was last updated on August 8, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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 Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport at noon. Doing so could potentially save you 36% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Sky Harbor Intl. Price data was last updated on August 17, 2025.

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

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

Reviews of airlines servicing Sky Harbor Intl

Get insights into the airlines that provide service to Sky Harbor Intl. 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 Sky Harbor Intl. Reviews last updated August 20, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
8.0
Very good

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Crew

8.6

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Sky Harbor Intl. 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 Sky Harbor Intl Airport?

    Frontier can get you from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in just under 28h 02m. Your travel time can differ by up to . Washington, D.C. Dulles Intl Airport and Phoenix Sky Harbor Intl Airport are separated by a distance of 1950 mi.

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

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport is Frontier. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are Delta and Sun Country Air, starting at $256 and $265 round-trip. You may be able to fly from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport for 63% less than the average price by searching for these airlines.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport consider choosing Avianca (77%), United Airlines (69%) or Austrian Airlines (59%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport is generally $840, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Washington, D.C. Dulles Intl - Phoenix Sky Harbor Intl), you can expect to pay $165 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Sky Harbor Intl 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 Sky Harbor Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport (average of $258). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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

Traveling to a place near Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Payson
Chandler
Glendale
Globe
Goodyear
Surprise
Casa Grande
Buckeye
Camp Verde
Peoria
Paradise Valley
Avondale
Guadalupe

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dulles Intl to Sky Harbor Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Dulles Intl to Sky Harbor Intl

Discover the top 6 airlines that operate flights from Dulles Intl to Sky Harbor Intl. 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 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$259FlexibilityNo cancel feeOn-time62%
DeltaCheapest$256Average$368FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$265Average$310FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$269Average$380FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$269Average$418FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$376Average$452FlexibilityNo cancel feeOn-time71%

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