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Dulles Intl

$133+ 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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — IAD
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
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 June, booked 70 days in advance, depart on a Friday or Thursday 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 November 10, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$235
(Kiwi.com)

One-way from

$133
(Kiwi.com)

Popular in

January

Cheapest in

August

Average price

$450

Good round-trip deal

$377 or less

Good one-way deal

$244 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. 12% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 10, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/212:50 pmPHX - IAD
1 stop7h 09mFrontier
Mon 11/248:40 amIAD - PHX
1 stop16h 31mFrontier
Deal found 11/9$235
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/212:50 pmPHX - IAD
1 stop7h 09mFrontier
Tue 11/258:44 amIAD - PHX
2 stops30h 17mFrontier
Deal found 11/8$238
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:56 pmPHX - IAD
2 stops40h 00mFrontier
Fri 1/96:00 amIAD - PHX
1 stop11h 13mFrontier
Deal found 11/10$239
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:00 amPHX - IAD
1 stop15h 05mMultiple Airlines
Mon 1/56:05 amIAD - PHX
2 stops31h 38mMultiple Airlines
Deal found 11/7$242
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:52 amPHX - IAD
Nonstop4h 13mUnited Airlines
Fri 12/1212:35 pmIAD - PHX
Nonstop5h 07mUnited Airlines
Deal found 11/10$243
This Super.com deal was found by Cheapflights users on 11/8. 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.
Mon 12/156:00 amPHX - IAD
1 stop9h 25mFrontier
Tue 1/67:05 amIAD - PHX
1 stop10h 08mFrontier
Deal found 11/8$244
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/212:50 pmPHX - IAD
1 stop7h 09mFrontier
Tue 12/29:00 amIAD - PHX
2 stops11h 31mFrontier
Deal found 11/7$245
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2310:55 pmPHX - IAD
1 stop30h 50mFrontier
Thu 11/2711:12 amIAD - PHX
1 stop13h 59mFrontier
Deal found 11/8$246
This CheapOair deal was found by Cheapflights users on 11/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/222:50 pmPHX - IAD
1 stop7h 09mFrontier
Sun 11/238:44 amIAD - PHX
1 stop16h 27mFrontier
Deal found 11/9$248
This Frontier deal was found by Cheapflights users on 11/8. 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 11/206:00 amPHX - IAD
1 stop9h 46mFrontier
Mon 11/246:55 amIAD - PHX
1 stop13h 25mFrontier
Deal found 11/8$252
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/37:56 pmPHX - IAD
1 stop19h 34mAlaska Airlines
Fri 12/55:37 pmIAD - PHX
1 stop8h 22mAlaska Airlines
Deal found 11/9$253
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:26 pmPHX - IAD
2 stops46h 39mFrontier
Mon 1/56:05 amIAD - PHX
1 stop11h 13mFrontier
Deal found 11/7$254

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 November 10, 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

Sat 12/6

10:22 am-10:05 pm

1 stop9h 43m

Washington, D.C. Dulles Intl

Sat 12/13

5:37 pm-11:59 pm

1 stop8h 22m

$238

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 12/9

10:15 am-9:18 pm

1 stop9h 03m

Washington, D.C. Dulles Intl

Tue 12/16

12:35 pm-3:42 pm

Nonstop5h 07m

$253

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 2/24

3:04 pm-9:19 pm

Nonstop4h 15m

Washington, D.C. Dulles Intl

Sun 3/1

1:02 pm-7:18 pm

1 stop8h 16m

$253

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Mon 12/15

7:00 am-3:01 pm

1 stop6h 01m

Washington, D.C. Dulles Intl

Tue 1/6

5:24 pm-8:37 pm

Nonstop5h 13m

$253

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 1/15

3:45 pm-5:04 pm

1 stop23h 19m

Washington, D.C. Dulles Intl

Tue 1/20

5:26 pm-2:00 pm

1 stop22h 34m

$258

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/17

1:33 pm-9:29 pm

1 stop5h 56m

Washington, D.C. Dulles Intl

Wed 1/7

6:15 pm-11:40 pm

1 stop7h 25m

$263

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 12/18

3:20 pm-12:02 am

1 stop6h 42m

Washington, D.C. Dulles Intl

Wed 1/7

6:15 pm-11:40 pm

1 stop7h 25m

$263

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 12/12

1:33 pm-9:29 pm

1 stop5h 56m

Washington, D.C. Dulles Intl

Tue 1/6

6:15 pm-11:40 pm

1 stop7h 25m

$263

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/10

12:57 pm-9:24 pm

1 stop6h 27m

Washington, D.C. Dulles Intl

Sun 12/14

8:17 am-1:38 pm

1 stop7h 21m

$263

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/17

11:59 pm-9:11 am

1 stop7h 12m

Washington, D.C. Dulles Intl

Mon 1/5

5:26 pm-10:47 pm

1 stop7h 21m

$263

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 24 results
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.

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 November 7, 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 70 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 $158). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $299). 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 November 10, 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 40% 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 November 2, 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 evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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, typically under 10 minutes, with live wait times displayed online for Terminal 4 checkpoints.

Read more about PHXby Brandon Schultz
IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cost-effective transport option to 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

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 November 10, 2025.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,003 reviews
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,011 reviews
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,111 reviews
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in 9h 03m. Fly via Alaska Airlines or United Airlines to get the fastest option. The distance between Phoenix Sky Harbor Intl Airport and Washington, D.C. Dulles Intl Airport is about 1950 mi. This flight may include one or multiple stops.

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

    Currently priced at $149, Frontier will fly you from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Southwest and United Airlines - these airlines can fly you to your destination from $236 and $268, respectively. Frontier is currently priced 62% 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?

    $152 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and Southwest, with prices starting from $165 and $177, respectively.

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

    Consider Lufthansa (94%), United Airlines (93%) or Avianca (93%) 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 $143. While the most popular route (Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl) can be booked for $146 on average, our data indicates $1,071 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 $158). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $299). 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
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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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 4 airlines flying from Sky Harbor Intl to Dulles Intl

Discover the top 4 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 November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$149Average$263FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$236Average$398FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$268Average$398FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$337FlexibilityNo cancel feeOn-timeN/A

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