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Cheap flights from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport from £122

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHX
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Sky Harbor Intl

Enter your travel dates to find the best prices.

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 12 August 2026.

Sun 6/907:00 -
1 stop11h 03m
Thu 10/915:15 -
1 stop23h 59m
Deal found 12/8£243
Mon 7/1217:38 -
1 stop19h 49m
Wed 9/1215:15 -
1 stop25h 46m
Deal found 10/8£244
Fri 30/1018:59 -
1 stop7h 22m
Sat 31/1023:59 -
1 stop8h 11m
Deal found 11/8£245
Thu 29/1017:46 -
Nonstop5h 18m
Mon 2/1115:08 -
Nonstop4h 15m
Deal found 11/8£247
Wed 28/1012:55 -
Nonstop5h 13m
Fri 30/1022:59 -
Nonstop4h 09m
Deal found 11/8£249
Wed 23/907:00 -
1 stop11h 10m
Sat 26/914:29 -
1 stop12h 11m
Deal found 8/8£249
Sun 6/907:00 -
1 stop11h 03m
Wed 9/916:13 -
1 stop10h 27m
Deal found 12/8£250
Wed 28/1012:55 -
Nonstop5h 13m
Sat 31/1007:50 -
Nonstop4h 13m
Deal found 10/8£251
Wed 16/918:00 -
Nonstop4h 54m
Sat 19/908:45 -
1 stop9h 42m
Deal found 10/8£252
Thu 10/918:00 -
Nonstop4h 54m
Mon 14/914:21 -
1 stop7h 23m
Deal found 12/8£252
Mon 7/906:30 -
1 stop6h 52m
Wed 9/908:55 -
Nonstop4h 28m
Deal found 11/8£254
Wed 26/807:00 -
1 stop11h 03m
Wed 2/907:09 -
1 stop8h 05m
Deal found 11/8£255

Find 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 12 August 2026.

Round-trip from

£243

One-way from

£122

Popular in

March

Cheapest in

January

Average price

£329
Alaska Airlines
  • Alaska Airlines
  • 6/9-10/9
  • 2 total stops
  • 35h 02m total
  • Washington, D.C. to Phoenix
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 21/9
  • 1 total stop
  • 18h 44m total
  • Washington, D.C. to Phoenix
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£13 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 August 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Thu 3/12

08:00-15:22

1 stop9h 22m

Phoenix Sky Harbor Intl

Sat 5/12

00:59-11:18

1 stop8h 19m

£245
Fastest return journey

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 28/10

12:55-15:08

Nonstop5h 13m

Phoenix Sky Harbor Intl

Sat 31/10

07:50-15:03

Nonstop4h 13m

£251

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Thu 4/2

17:25-23:16

1 stop7h 51m

Phoenix Sky Harbor Intl

Tue 9/2

07:01-19:01

1 stop10h 00m

£255

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Tue 15/9

18:00-19:54

Nonstop4h 54m

Phoenix Sky Harbor Intl

Thu 17/9

18:55-05:25

1 stop7h 30m

£263

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Fri 18/12

08:00-15:22

1 stop9h 22m

Phoenix Sky Harbor Intl

Wed 23/12

13:05-00:20

1 stop9h 15m

£266

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Fri 1/1

16:15-00:06

1 stop9h 51m

Phoenix Sky Harbor Intl

Mon 4/1

15:05-23:33

1 stop6h 28m

£266

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 21/10

08:51-10:42

Nonstop4h 51m

Phoenix Sky Harbor Intl

Mon 26/10

14:37-00:30

1 stop6h 53m

£280

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 30/9

07:00-19:07

2 stops15h 07m

Phoenix Sky Harbor Intl

Mon 5/10

19:24-17:50

1 stop19h 26m

£285

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 27/1

11:05-18:58

1 stop9h 53m

Phoenix Sky Harbor Intl

Sun 31/1

15:58-00:20

1 stop6h 22m

£289

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Sun 15/11

18:40-10:38

1 stop17h 58m

Phoenix Sky Harbor Intl

Wed 18/11

13:49-05:51

1 stop14h 02m

£290

Flights are sorted by cheapest return flights first.

Deals found on 8/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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 return 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?

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 61 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 £318). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of £432). 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 12 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport as you normally would.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport flights typically cost between £250 and £398 in September.
The cheapest return price found within the last 5 days was £243 on Alaska Airlines (6 Sept–10 Sept).

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?

    Departing from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport will take you 5h 13m. The distance between Washington, D.C. Dulles Intl Airport and Phoenix Sky Harbor Intl Airport is about 1950 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

  • 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 holiday 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 £318). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of £432). 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

Travelling 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
Glendale

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How does Cheapflights help users find flights from Dulles Intl to Sky Harbor Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Sky Harbor Intl from Dulles Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Sky Harbor Intl?

Cheapflights helps you find that perfect flight to Sky Harbor Intl from Dulles Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Dulles Intl to Sky Harbor Intl with no change fees?

Certainly. Search results for flights to Sky Harbor Intl from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Dulles Intl to Sky Harbor Intl become cheaper?

Not ready to book yet? You can track prices for flights from Dulles Intl to Sky Harbor Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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