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Dulles Intl

$105+ Cheap flights from Arizona to Dulles Intl (IAD)

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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — IAD
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap flight deals from Arizona to Dulles Intl

Cheapest flights from Arizona to Dulles Intl
Explore the most affordable flight options available from Arizona to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:46 pm
LAS
-
IAD
Nonstop4h 34m
Frontier
Tue 9/156:00 am
IAD
-
LAS
Nonstop4h 58m
Frontier
Deal found 7/28$156
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:46 pm
LAS
-
IAD
Nonstop4h 34m
Frontier
Fri 9/186:00 am
IAD
-
LAS
Nonstop4h 58m
Frontier
Deal found 7/29$157
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:30 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Sat 9/58:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/28$158
This Frontier deal was found by Cheapflights users on 7/28. 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 9/1110:46 pm
LAS
-
IAD
Nonstop4h 34m
Frontier
Fri 9/186:00 am
IAD
-
LAS
Nonstop4h 58m
Frontier
Deal found 7/28$159
This Frontier deal was found by Cheapflights users on 7/28. 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 9/312:30 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Mon 9/78:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/28$160
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:30 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Sat 8/228:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/27$161
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:46 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Thu 8/208:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/29$163
This Super.com deal was found by Cheapflights users on 7/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:46 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Thu 8/208:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/29$164
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:30 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Tue 9/18:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/29$167
This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:46 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Sat 8/159:30 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/29$168
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2412:30 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Tue 9/18:59 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/29$169
This Frontier deal was found by Cheapflights users on 7/25. 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.
Wed 8/1212:46 am
LAS
-
IAD
Nonstop4h 34m
Frontier
Mon 8/179:50 am
IAD
-
LAS
Nonstop4h 55m
Frontier
Deal found 7/25$171

Find flight deals from Arizona to Dulles Intl

Keep the following information in mind while searching for Arizona to Dulles Intl flight deals. Data was last updated July 30, 2026.

Round-trip from

$156
(Cheapflightsfares)

One-way from

$105
(eDestinos)

Popular in

March

Cheapest in

August

Average price

$460

Good round-trip deal

$442 or less

Good one-way deal

$270 or less
From Arizona to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Arizona to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Arizona to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Arizona to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Arizona to Dulles 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 July 30, 2026.
Use the filters below to find and compare flights from Arizona to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 8/29

11:57 pm-7:30 am

Nonstop4h 33m

Washington, D.C. Dulles Intl

Mon 8/31

6:00 pm-8:08 pm

Nonstop5h 08m

$189

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 8/29

1:23 pm-9:01 pm

Nonstop4h 38m

Washington, D.C. Dulles Intl

Tue 9/1

8:31 am-1:15 pm

1 stop7h 44m

$195

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 8/19

11:57 pm-7:30 am

Nonstop4h 33m

Washington, D.C. Dulles Intl

Fri 8/21

8:31 am-1:15 pm

1 stop7h 44m

$209

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Thu 12/24

1:19 pm-8:47 pm

Nonstop4h 28m

Washington, D.C. Dulles Intl

Thu 12/31

8:53 pm-11:14 pm

Nonstop5h 21m

$249

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 8/22

6:00 am-4:42 pm

1 stop7h 42m

Washington, D.C. Dulles Intl

Sat 8/29

2:54 pm-9:13 pm

1 stop9h 19m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Tue 8/18

10:00 pm-9:20 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Wed 8/26

5:25 pm-9:11 pm

1 stop6h 46m

$257

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Fri 8/14

11:31 am-11:26 pm

1 stop8h 55m

Washington, D.C. Dulles Intl

Sun 8/16

7:19 pm-12:40 am

1 stop8h 21m

$263

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Sat 8/22

10:00 pm-9:20 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Sun 8/30

6:00 am-10:33 am

1 stop7h 33m

$267

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 8/19

11:31 am-11:26 pm

1 stop8h 55m

Washington, D.C. Dulles Intl

Wed 8/26

5:47 pm-11:10 pm

1 stop8h 23m

$267

Las VegasWashington, D.C.

LAS - IAD

LASIAD

Las Vegas Harry Reid Intl

Wed 8/19

11:31 am-11:26 pm

1 stop8h 55m

Washington, D.C. Dulles Intl

Fri 8/21

5:47 pm-11:10 pm

1 stop8h 23m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Arizona to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Arizona 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 Arizona to Washington, D.C. Dulles Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from Arizona to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Arizona to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $642). 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 AZ to IAD?

Find hourly flight availability from Arizona to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 27% on flights from Arizona to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the evening.

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

Explore weekly flight availability from Arizona to Dulles Intl. 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 July 30, 2026.

The most flights from USAZ to IAD are scheduled on a Tuesday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

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

Airfare is below average for this route at the moment.
Arizona to Washington, D.C. Dulles Intl Airport flights typically cost between $369 and $507 in August.
The cheapest round-trip price found within the last 5 days was $294 on Frontier (Aug 27-Aug 31).

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

To ensure you get the cheapest price possible for a flight from Arizona to Washington, D.C. Dulles Intl Airport, you should look to book at least 55 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Use this chart to determine the cheapest time to fly round-trip from Arizona to Dulles Intl. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their Arizona to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Arizona to Dulles 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 Arizona to Washington, D.C. Dulles Intl Airport?

    For as low as $189, United Airlines can have you in Washington, D.C. Dulles Intl Airport from Arizona in 4h 33m. The distance between Arizona and Washington, D.C. Dulles Intl Airport is about 2059 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Arizona to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $105. United Airlines flights start at $149 while deals on Delta start at $167 one-way.

  • What are the most popular routes from Arizona to Washington, D.C. Dulles Intl Airport?

    Most travelers choose Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl, Las Vegas Harry Reid Intl - Washington, D.C. Dulles Intl or Tucson - Washington, D.C. Dulles Intl when deciding on the best route from Arizona to Washington, D.C. Dulles Intl Airport.

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

    No one likes to see their flight delayed. When booking a flight from Arizona to Washington, D.C. Dulles Intl Airport consider choosing United Airlines (96%), Lufthansa (94%) or Avianca (89%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $2,588 for a flight from Arizona to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $198 while the most popular route, (Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl) is currently priced at $259.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Arizona to Dulles 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 Arizona to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Arizona to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Arizona to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $642). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Arizona to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Baltimore flights
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Reagan-National flights
O'Hare Intl to Baltimore flights
Los Angeles to Reagan-National flights
Hobby to Baltimore flights
Los Angeles to Baltimore flights
Seattle to Dulles Intl flights
Hobby to Reagan-National flights
San Francisco to Reagan-National flights
Atlanta to Dulles Intl flights
Atlanta to Baltimore flights
San Francisco to Dulles Intl flights
Boston to Reagan-National flights
Boston to Baltimore flights
Seattle to Reagan-National flights
San Francisco to Baltimore flights
Los Angeles to Dulles Intl flights
Orlando to Dulles Intl flights
Orlando to Baltimore flights
O'Hare Intl to Reagan-National flights
Fort Lauderdale to Baltimore flights
O'Hare Intl to Dulles Intl flights
Boston to Dulles Intl flights
Denver to Baltimore flights
Atlanta to Reagan-National flights
George Bush Intcntl to Reagan-National flights
George Bush Intcntl to Baltimore flights
John F Kennedy Intl to Dulles Intl flights
Hobby to Dulles Intl flights
Tampa to Dulles Intl flights
Seattle to Baltimore flights
Denver to Dulles Intl flights
Austin to Dulles Intl flights
Orlando to Reagan-National flights
Ontario to Dulles Intl flights
Miami to Dulles Intl flights
Midway to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
Tampa to Baltimore flights
Tampa to Reagan-National flights
Miami to Baltimore flights
Miami to Reagan-National flights
Minneapolis to Dulles Intl flights
San Diego to Dulles Intl flights
Detroit to Baltimore flights
Newark to Dulles Intl flights
Fort Lauderdale to Dulles Intl flights
Denver to Reagan-National flights
Ontario to Baltimore flights

Top 5 airlines flying from Arizona to Dulles Intl

Discover the top 5 airlines that operate flights from Arizona to Dulles 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$280FlexibilityNo cancel feeOn-time62%
DeltaCheapest$187Average$375FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$269Average$556FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$339Average$557FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$356Average$525FlexibilityNo cancel feeOn-time71%

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