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Phoenix

$186+ Cheap flights from Dulles Intl (IAD) to Phoenix

IAD — PHX
Dec 9 — Dec 161
Wed 12/9
Wed 12/16
1 adult, Economy
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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 are usually found in August or January, booked 65 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

Fri 12/410:33 pm -
2 stops24h 54m
Sun 12/69:29 pm -
2 stops18h 09m
Deal found 11/8$362
Tue 11/1712:31 pm -
1 stop13h 24m
Thu 11/2612:30 pm -
1 stop14h 05m
Deal found 11/9$363
Thu 12/310:22 pm -
2 stops14h 20m
Tue 12/88:00 am -
1 stop10h 10m
Deal found 11/6$364
Sat 11/1412:33 pm -
1 stop13h 22m
Sun 11/223:11 pm -
1 stop11h 59m
Deal found 11/6$365
Thu 12/310:22 pm -
2 stops14h 20m
Wed 12/98:00 am -
1 stop10h 10m
Deal found 11/9$366
Wed 12/168:55 pm -
1 stop11h 57m
Mon 1/48:25 am -
1 stop9h 06m
Deal found 11/8$367
Thu 12/248:51 pm -
1 stop17h 06m
Thu 12/316:31 pm -
1 stop9h 36m
Deal found 11/9$368
Sun 12/67:00 am -
1 stop12h 35m
Sun 12/138:05 am -
1 stop7h 34m
Deal found 11/9$369
Sun 12/208:26 pm -
1 stop12h 26m
Thu 12/316:31 pm -
1 stop9h 36m
Deal found 11/9$370
Wed 12/212:06 pm -
2 stops11h 32m
Tue 12/86:45 am -
2 stops11h 25m
Deal found 11/9$371
Mon 12/1410:35 pm -
2 stops22h 10m
Sat 12/192:05 pm -
2 stops14h 02m
Deal found 11/8$372
Sat 12/59:23 pm -
2 stops26h 04m
Sat 12/127:00 am -
2 stops11h 28m
Deal found 11/9$373

Find flight deals from Dulles Intl to Phoenix

Round-trip from

$362
(Mytrip)

One-way from

$186
(Frontier)

Popular in

March

Cheapest in

August

Average price

$499
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. 2% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Cheapflights Fare Finder

 
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

Tue 12/8

12:55 pm-4:08 pm

Nonstop5h 13m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$239

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Tue 3/23

5:46 pm-8:02 pm

Nonstop5h 16m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$239

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Sat 2/13

6:00 pm-9:18 pm

Nonstop5h 18m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$254

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Sat 1/2

9:00 am-12:14 pm

Nonstop5h 14m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$259

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Thu 1/14

10:05 am-9:40 pm

2 stops13h 35m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$265

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Sat 12/19

5:20 pm-11:05 pm

1 stop7h 45m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$311

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Sat 3/27

10:20 am-8:23 pm

2 stops13h 03m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$314

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 12/30

6:00 pm-9:19 pm

Nonstop5h 19m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$314

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Wed 3/24

6:15 am-5:48 pm

2 stops14h 33m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$314

Washington, D.C.Phoenix

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

IADPHX

Washington, D.C. Dulles Intl

Mon 11/16

7:46 am-5:41 pm

1 stop11h 55m

Phoenix Sky Harbor Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 22 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

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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix (average of $439). Flying from Washington, D.C. Dulles Intl Airport to Phoenix in March is currently the most expensive (average of $584). 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?

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 12% on the flight price compared to flying in the evening, which is usually more expensive.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Phoenix

The most flights from IAD to PH1 are scheduled on a Thursday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 $400 and $629 in December.
The cheapest round-trip price found within the last 5 days was $362 on Frontier (Dec 4-Dec 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 64 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?

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

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
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Southwest
8.0
Very good
4,219 reviews
Southwest
8.0
Very good
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Delta
7.8
Good
8,699 reviews
Southwest
8.0
Very good
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
United Airlines
7.3
Good
10,471 reviews
Southwest
8.0
Very good
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
American Airlines
7.0
Good
12,227 reviews
Southwest
8.0
Very good
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.
Frontier
5.5
Fair
2,507 reviews
Southwest
8.0
Very good
4,219 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

  • 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 7h 17m. Your travel time can differ by up to 11h 24m. 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 ($176), Delta ($247), and Southwest ($281) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Phoenix. Frontier is currently priced 64% 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 $138 on Alaska Airlines and Delta, 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 United Airlines (83%), Avianca (78%) and Austrian Airlines (78%).

  • 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 $1,043, our data shows the cheapest flight currently is $223. When looking at the most popular route, (Washington, D.C. Dulles Intl - Phoenix Sky Harbor Intl), you can expect to pay $282 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Phoenix (average of $439). Flying from Washington, D.C. Dulles Intl Airport to Phoenix in March is currently the most expensive (average of $584). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Dulles Intl to Phoenix

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$176Average$322FlexibilityNo cancel feeOn-time62%
DeltaCheapest$247Average$358FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$281Average$520FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$335Average$528FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$358Average$537FlexibilityNo cancel feeOn-time71%

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