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$131+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHX
Mar 17 — Mar 241
Mon 3/17
Mon 3/24
1 adult, Economy
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The best prices from Washington, D.C. Dulles Intl to Phoenix are usually found in August or January, booked 71 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap 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 March 12, 2025.

Round-trip from

$275
(Frontier)

One-way from

$131
(Booking.com)

Popular in

December

Cheapest in

August

Average price

$452
From Washington, D.C. Dulles Intl to Phoenix
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One-way flight from Washington, D.C. Dulles Intl to Phoenix
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Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 March 12, 2025.

This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/207:00 pmIAD - PHX
Nonstop5h 10mSouthwest
Tue 4/299:55 amPHX - IAD
1 stop9h 40mSouthwest
Deal found 3/12$274
This Frontier deal was found by Cheapflights users on 3/11. 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 3/284:10 pmIAD - PHX
1 stop9h 06mFrontier
Wed 4/211:59 pmPHX - IAD
1 stop14h 05mFrontier
Deal found 3/11$275
This United Airlines deal was found by Cheapflights users on 3/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:34 pmIAD - PHX
Nonstop4h 48mUnited Airlines
Wed 6/411:39 pmPHX - IAD
Nonstop4h 23mUnited Airlines
Deal found 3/11$277
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:00 amIAD - PHX
1 stop11h 49mAlaska Airlines
Wed 4/306:16 pmPHX - IAD
1 stop10h 27mAlaska Airlines
Deal found 3/11$291
This Delta deal was found by Cheapflights users on 3/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:00 amIAD - PHX
1 stop6h 47mDelta
Tue 4/2211:50 pmPHX - IAD
1 stop6h 17mDelta
Deal found 3/11$308
This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1011:57 amIAD - PHX
1 stop13h 48mMultiple Airlines
Sun 4/1311:59 pmPHX - IAD
1 stop14h 03mMultiple Airlines
Deal found 3/10$315
This Sun Country Air deal was found by Cheapflights users on 3/12. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1011:57 amIAD - PHX
1 stop13h 48mSun Country Air
Thu 4/176:12 pmPHX - IAD
1 stop14h 11mSun Country Air
Deal found 3/12$355
This American Airlines deal was found by Cheapflights users on 3/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2811:18 amIAD - PHX
2 stops8h 45mAmerican Airlines
Fri 7/412:38 amPHX - IAD
1 stop7h 07mAmerican Airlines
Deal found 3/12$382

Find flights from Dulles Intl to Phoenix within your budget

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 March 12, 2025.

Fly from

Dulles Intl

Fly to

Phoenix

Route

Depart

Return

Price

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sun 4/20

7:00 pm-9:10 pm

Nonstop5h 10m

Phoenix Sky Harbor Intl

Tue 4/29

9:55 am-10:35 pm

1 stop9h 40m

$274

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Fri 3/28

4:10 pm-10:16 pm

1 stop9h 06m

Phoenix Sky Harbor Intl

Wed 4/2

11:59 pm-5:04 pm

1 stop14h 05m

$275

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 5/28

5:34 pm-7:22 pm

Nonstop4h 48m

Phoenix Sky Harbor Intl

Wed 6/4

11:39 pm-7:02 am

Nonstop4h 23m

$277

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 4/30

7:00 am-3:49 pm

1 stop11h 49m

Phoenix Sky Harbor Intl

Wed 4/30

6:16 pm-7:43 am

1 stop10h 27m

$291

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Mon 4/7

1:48 pm-7:02 pm

1 stop8h 14m

Phoenix Sky Harbor Intl

Mon 4/14

10:35 pm-9:18 am

1 stop7h 43m

$297

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 4/10

11:57 am-10:45 pm

1 stop13h 48m

Phoenix Sky Harbor Intl

Sun 4/13

11:59 pm-5:02 pm

1 stop14h 03m

$315

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Thu 4/10

11:57 am-10:45 pm

1 stop13h 48m

Phoenix Sky Harbor Intl

Thu 4/17

6:12 pm-11:23 am

1 stop14h 11m

$355

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Wed 5/7

5:02 am-10:20 am

2 stops8h 18m

Phoenix Sky Harbor Intl

Sun 5/11

5:00 am-4:56 pm

1 stop8h 56m

$382

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sat 5/24

1:27 pm-4:27 pm

1 stop30h 00m

$131

Washington, D.C.Phoenix

IAD - PHX

IADPHX

Washington, D.C. Dulles Intl

Sat 4/19

8:25 am-8:34 am

2 stops27h 09m

$135

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 17 results
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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.

Travel insights for flights from Dulles Intl to Phoenix

Get recent, data-driven insights about flights from Dulles Intl to Phoenix including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Phoenix. Price data was last updated on March 7, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Phoenix is 71 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 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 $258). Flying from Washington, D.C. Dulles Intl Airport to Phoenix 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 Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 12, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Phoenix at noon. Doing so could potentially save you 35% 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?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Phoenix. Price data was last updated on December 16, 2024.

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. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Dulles Intl to Phoenix. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 12, 2025.

The most flights from IAD to PH1 are scheduled on a Tuesday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Phoenix by month

Plan your trip to Phoenix by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phoenix ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Phoenix when rainfall is around 0.0 in.

Temperature in Phoenix by month

Plan your trip to Phoenix by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phoenix, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 March 12, 2025.
To help decide which airline to fly from Washington, D.C. to Phoenix, see what other customers have to say about Southwest, Alaska Airlines and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,297 reviews
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines
8.0
Very good
9,732 reviews
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
7,953 reviews
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Hawaiian Airlines
7.9
Good
2,320 reviews
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,623 reviews
Southwest
8.1
Very good
4,297 reviews

Food

7.1

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    According to our current data, Frontier ($275), United Airlines ($277), and Southwest ($287) offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Phoenix. Frontier is currently priced 34% 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 $131. Users have also found prices from $139 and $140 on United Airlines and Sun Country Air, 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 (81%), United Airlines (79%) and Avianca (79%).

  • 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 $835, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Washington, D.C. Dulles Intl - Phoenix Sky Harbor Intl), you can expect to pay $190 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 $258). Flying from Washington, D.C. Dulles Intl Airport to Phoenix 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

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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 March 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$218FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$238Average$310FlexibilityNo cancel feeOn-time83%
DeltaCheapest$256Average$348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$431FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$286Average$399FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$326Average$456FlexibilityNo cancel feeOn-time71%
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