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Dulles Intl

$138+ Cheap flights from Sky Harbor Intl (PHX) 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — IAD
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl are usually found in August or September, booked 90 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap flight deals from Sky Harbor Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Dulles Intl (IAD). 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$239
(United Airlines)

One-way from

$138
(Alaska Airlines)

Popular in

January

Cheapest in

August

Average price

$384

Good round-trip deal

$388 or less

Good one-way deal

$192 or less
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Washington, D.C. Dulles Intl flights.
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From Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl
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One-way flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 5% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl.
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Find flight deals from Sky Harbor Intl to Dulles Intl

Cheapest flights from Sky Harbor Intl to Dulles Intl
Explore the most affordable flight options available from Sky Harbor Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2711:39 pmPHX - IAD
Nonstop4h 23mUnited Airlines
Tue 6/35:34 pmIAD - PHX
Nonstop4h 48mUnited Airlines
Deal found 4/27$239
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/306:00 amPHX - IAD
1 stop20h 55mFrontier
Sun 6/17:30 amIAD - PHX
1 stop13h 54mFrontier
Deal found 4/28$241
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:10 amPHX - IAD
1 stop8h 35mAlaska Airlines
Fri 11/144:15 pmIAD - PHX
1 stop9h 01mAlaska Airlines
Deal found 4/28$256
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/41:45 pmPHX - IAD
1 stop6h 29mDelta
Tue 7/156:00 amIAD - PHX
1 stop6h 27mDelta
Deal found 4/28$277
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/219:25 amPHX - IAD
Nonstop4h 20mSouthwest
Mon 6/25:35 pmIAD - PHX
Nonstop5h 10mSouthwest
Deal found 4/27$299
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/277:28 pmPHX - IAD
1 stop7h 27mMultiple Airlines
Tue 6/36:30 amIAD - PHX
1 stop9h 21mMultiple Airlines
Deal found 4/27$305
This American Airlines deal was found by Cheapflights users on 4/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2512:26 pmPHX - IAD
1 stop8h 36mAmerican Airlines
Fri 7/46:55 amIAD - PHX
2 stops8h 57mAmerican Airlines
Deal found 4/27$356
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/411:44 amPHX - IAD
1 stop9h 15mHawaiian Airlines
Tue 6/106:30 amIAD - PHX
1 stop9h 21mHawaiian Airlines
Deal found 4/28$397

Cheapflights Fare Finder

Customize your flight search to find flights from Sky Harbor Intl 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 April 29, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Sky Harbor Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 5/27

11:39 pm-7:02 am

Nonstop4h 23m

Washington, D.C. Dulles Intl

Tue 6/3

5:34 pm-7:22 pm

Nonstop4h 48m

$239

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 5/30

6:00 am-5:55 am

1 stop20h 55m

Washington, D.C. Dulles Intl

Sun 6/1

7:30 am-6:24 pm

1 stop13h 54m

$241

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 7/4

1:45 pm-11:14 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

Tue 7/15

6:00 am-9:27 am

1 stop6h 27m

$277

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 5/21

9:25 am-4:45 pm

Nonstop4h 20m

Washington, D.C. Dulles Intl

Mon 6/2

5:35 pm-7:45 pm

Nonstop5h 10m

$299

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 5/27

7:28 pm-5:55 am

1 stop7h 27m

Washington, D.C. Dulles Intl

Tue 6/3

6:30 am-12:51 pm

1 stop9h 21m

$305

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Sun 5/25

12:26 pm-12:02 am

1 stop8h 36m

Washington, D.C. Dulles Intl

Fri 7/4

6:55 am-12:52 pm

2 stops8h 57m

$356

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 6/3

7:00 am-11:59 pm

2 stops13h 59m

Washington, D.C. Dulles Intl

Wed 6/4

9:00 am-4:28 pm

1 stop10h 28m

$376

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 6/4

11:44 am-11:59 pm

1 stop9h 15m

Washington, D.C. Dulles Intl

Tue 6/10

6:30 am-12:51 pm

1 stop9h 21m

$397

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 5/2

6:16 pm-7:43 am

1 stop10h 27m

$138

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Mon 5/26

12:45 am-11:16 am

1 stop7h 31m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 18 results
1
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Compare providers for flights from Sky Harbor Intl to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Dulles Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport trip
Airports
PHX

PHX offers short security lines with wait times often under 10 minutes, making it efficient for early morning departures.

Read more about PHXby Brandon Schultz
IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cost-effective way to reach the city.

Read more about IADby Ramsey Qubein
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on PHX

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Sky Harbor Intl to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sky Harbor 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.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Dulles Intl. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 90 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 month to book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 PHX to IAD?

Find hourly flight availability from Sky Harbor Intl 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 April 29, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in the evening. Doing so could potentially save you 42% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Dulles Intl. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Sky Harbor Intl 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 April 29, 2025.

The most flights from PHX to IAD are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Dulles Intl by month

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

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

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated April 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Phoenix to Washington, D.C.. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,292 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Dulles Intl. 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 Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $239, United Airlines will fly you from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $241 and $277, respectively. United Airlines is currently priced 40% below the average price you’ll pay for this route.

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

    $138 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Delta and Sun Country Air, with prices starting from $139 and $140, respectively.

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

    Consider United Airlines (88%), Avianca (85%) or Southwest (83%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport.

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

    Looking at all options, your cheapest flight can be booked for $149. While the most popular route (Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl) can be booked for $201 on average our data indicates $985 when flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Gaithersburg
Silver Spring
Linthicum Heights
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Towson
National Harbor
Oxon Hill

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Alternative routes for Sky Harbor Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Reagan-National flights
Sky Harbor Intl to Baltimore flights

Top 5 airlines flying from Sky Harbor Intl to Dulles Intl

Discover the top 5 airlines that operate flights from Sky Harbor Intl 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$146Average$288FlexibilityNo cancel feeOn-time62%
DeltaCheapest$188Average$321FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$260Average$409FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$271Average$413FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$324Average$487FlexibilityNo cancel feeOn-time71%

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