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Cheap flights from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport from £85

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 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHX
1 Jan — 8 Jan1
1 adult
1 adult, Economy, 0 bags

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 2 December 2025.

Round-trip from

£195

One-way from

£85

Popular in

December

Cheapest in

August

Average price

£358
Southwest
  • Southwest
  • 10/1-17/1
  • 2 total stops
  • 13h 35m total
  • Washington, D.C. to Phoenix
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Southwest
  • Southwest
  • 17/1
  • Nonstop
  • 5h 15m total
  • Washington, D.C. to Phoenix
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in December 2025
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Find 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 2 December 2025.

Wed 31/1217:40IAD - PHX
Nonstop5h 12mUnited Airlines
Tue 6/106:45PHX - IAD
1 stop7h 50mUnited Airlines
Deal found 30/11£223
Wed 31/1217:40IAD - PHX
Nonstop5h 12mUnited Airlines
Wed 7/108:30PHX - IAD
Nonstop4h 18mUnited Airlines
Deal found 1/12£228
Wed 31/1216:40IAD - PHX
Nonstop5h 00mSouthwest
Wed 7/109:55PHX - IAD
2 stops10h 00mSouthwest
Deal found 1/12£229
Wed 31/1216:17IAD - PHX
1 stop9h 36mDelta
Tue 6/123:53PHX - IAD
1 stop9h 00mDelta
Deal found 1/12£239
Wed 31/1216:17IAD - PHX
1 stop9h 36mDelta
Wed 7/115:05PHX - IAD
1 stop6h 52mDelta
Deal found 29/11£242
Tue 30/1217:40IAD - PHX
Nonstop5h 12mUnited Airlines
Wed 7/108:30PHX - IAD
1 stop6h 05mUnited Airlines
Deal found 30/11£253
Wed 31/1216:40IAD - PHX
Nonstop5h 00mSouthwest
Tue 6/110:50PHX - IAD
Nonstop4h 00mSouthwest
Deal found 30/11£264
Wed 31/1217:40IAD - PHX
Nonstop5h 12mUnited Airlines
Mon 5/123:35PHX - IAD
Nonstop4h 15mUnited Airlines
Deal found 29/11£265

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 2 December 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

Sat 10/1

15:45-20:40

1 stop6h 55m

Phoenix Sky Harbor Intl

Sat 17/1

13:30-22:10

1 stop6h 40m

£195

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 8/1

07:30-15:45

1 stop10h 15m

Phoenix Sky Harbor Intl

Sun 11/1

12:05-23:10

1 stop9h 05m

£208

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sat 14/2

17:11-22:46

1 stop7h 35m

Phoenix Sky Harbor Intl

Wed 18/2

11:55-20:45

1 stop6h 50m

£209

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 15/1

17:24-20:37

Nonstop5h 13m

Phoenix Sky Harbor Intl

Sun 18/1

11:30-20:49

1 stop7h 19m

£222

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 31/12

06:20-13:30

1 stop9h 10m

Phoenix Sky Harbor Intl

Tue 6/1

15:13-21:25

Nonstop4h 12m

£236

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Tue 10/2

09:05-19:25

2 stops12h 20m

Phoenix Sky Harbor Intl

Fri 13/2

14:30-23:10

1 stop6h 40m

£247

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Fri 2/1

08:16-11:32

Nonstop5h 16m

Phoenix Sky Harbor Intl

Thu 8/1

15:13-21:25

Nonstop4h 12m

£248

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 21/1

17:26-22:49

1 stop7h 23m

Phoenix Sky Harbor Intl

Sun 25/1

23:53-09:13

1 stop7h 20m

£257

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 15/1

16:40-20:05

Nonstop5h 25m

Phoenix Sky Harbor Intl

Sun 18/1

10:50-16:50

Nonstop4h 00m

£259

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 8/1

07:30-15:45

1 stop10h 15m

Phoenix Sky Harbor Intl

Mon 12/1

06:00-13:59

1 stop5h 59m

£262

Flights are sorted by cheapest return flights first.

Deals found on 1/12

Showing 1-10 of 23 results
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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?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Sky Harbor Intl. Price data was last updated on 28 November 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 70 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, August 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 £143). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in April is currently the most expensive (average of £217). 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 2 December 2025.

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.

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 United Airlines (84%), Avianca (75%) and Austrian Airlines (73%).

  • 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, August 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 £143). Flying from Washington, D.C. Dulles Intl Airport to Phoenix Sky Harbor Intl Airport in April is currently the most expensive (average of £217). 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
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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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