What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airport typically offers the quickest layover for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Flights via Orlando (MCO) offer the fastest connection on this route, with an average layover time of 1h 18m.

Which airline has the best punctuality record on Phoenix to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

What’s the fastest layover option from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 7h 53m.

What’s the cheapest layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $140.

How often are flights from Phoenix to Washington, D.C. delayed?

About 10% of weekly flights between Phoenix and Washington, D.C. have experienced delays in the past year, with the average delay time being 130 minutes.

What is the most punctual flight time for Phoenix to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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.

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).

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

Consider Avianca (95%), United Airlines (91%) or Lufthansa (90%) 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 most popular airlines that fly from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport are United Airlines, Southwest and Frontier. Something to consider prior to booking your flight.

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.

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.

$126+ Flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport

Q: What’s the top layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Orlando (MCO) – chosen by Cheapflights users on 50% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport on Cheapflights.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Sky Harbor Intl to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 Wednesday

Cheap 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 December 15, 2025.

Wed 12/2411:35 pmPHX - IAD

Nonstop4h 15mUnited Airlines

Wed 12/315:40 pmIAD - PHX

Nonstop5h 12mUnited Airlines

Deal found 12/14

$240

Thu 12/256:00 amPHX - IAD

1 stop7h 14mDelta

Thu 1/16:00 amIAD - PHX

1 stop7h 21mDelta

Deal found 12/14

$257

Thu 12/252:33 pmPHX - IAD

1 stop6h 45mDelta

Tue 1/135:26 pmIAD - PHX

1 stop7h 21mDelta

Deal found 12/14

$261

Tue 12/304:49 pmPHX - IAD

2 stops22h 58mFrontier

Mon 1/126:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$272

Wed 12/2412:42 pmPHX - IAD

1 stop26h 39mAlaska Airlines

Sat 1/105:26 pmIAD - PHX

1 stop19h 33mAlaska Airlines

Deal found 12/14

$286

Mon 12/156:00 amPHX - IAD

1 stop9h 25mFrontier

Sun 1/116:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$288

Tue 12/304:49 pmPHX - IAD

2 stops22h 58mFrontier

Sun 1/116:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$290

Thu 12/256:00 amPHX - IAD

1 stop7h 14mDelta

Sat 1/105:27 pmIAD - PHX

1 stop7h 22mDelta

Deal found 12/14

$292

Wed 12/3111:35 pmPHX - IAD

1 stop8h 14mDelta

Wed 1/77:30 amIAD - PHX

1 stop10h 15mDelta

Deal found 12/13

$300

Wed 12/312:15 pmPHX - IAD

1 stop5h 55mSouthwest

Wed 1/74:30 pmIAD - PHX

Nonstop5h 20mSouthwest

Deal found 12/13

$302

Mon 12/2912:59 amPHX - IAD

1 stop18h 04mFrontier

Mon 1/56:05 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/12

$305

Best flights from Sky Harbor Intl to Dulles Intl
Discover carefully curated flight deals from Sky Harbor Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

Wed 1/2811:55 amPHX - IAD

1 stop6h 50mDelta

Tue 2/102:15 pmIAD - PHX

1 stop8h 47mDelta

Deal found 12/14

$265

Tue 2/248:20 pmPHX - IAD

1 stop19h 07mAlaska Airlines

Tue 3/36:20 pmIAD - PHX

1 stop19h 20mAlaska Airlines

Deal found 12/14

$265

Fri 1/93:57 pmPHX - IAD

2 stops17h 31mMultiple Airlines

Sun 1/119:59 pmIAD - PHX

1 stop16h 51mMultiple Airlines

Deal found 12/14

$282

Wed 2/183:12 pmPHX - IAD

Nonstop4h 13mUnited Airlines

Sat 2/215:33 pmIAD - PHX

Nonstop5h 18mUnited Airlines

Deal found 12/13

$292

Wed 1/287:30 amPHX - IAD

1 stop8h 51mDelta

Sat 1/3112:23 pmIAD - PHX

1 stop12h 17mDelta

Deal found 12/13

$280

Wed 12/2412:42 pmPHX - IAD

1 stop26h 39mAlaska Airlines

Sat 1/105:26 pmIAD - PHX

1 stop19h 33mAlaska Airlines

Deal found 12/14

$286

Wed 1/217:30 amPHX - IAD

1 stop8h 51mDelta

Sun 1/257:30 amIAD - PHX

1 stop10h 15mDelta

Deal found 12/14

$285

Tue 1/64:41 pmPHX - IAD

1 stop22h 23mAlaska Airlines

Tue 1/135:26 pmIAD - PHX

1 stop22h 34mAlaska Airlines

Deal found 12/14

$296

Thu 1/2912:05 pmPHX - IAD

1 stop9h 05mDelta

Tue 2/106:00 amIAD - PHX

1 stop7h 24mDelta

Deal found 12/14

$285

Wed 2/42:20 pmPHX - IAD

1 stop7h 28mDelta

Sun 2/87:00 amIAD - PHX

2 stops14h 04mDelta

Deal found 12/14

$290

Sat 1/1012:05 pmPHX - IAD

1 stop9h 05mDelta

Mon 1/127:30 amIAD - PHX

1 stop10h 15mDelta

Deal found 12/14

$305

Last-minute flights from Sky Harbor Intl to Dulles Intl
Discover last-minute flight deals from Sky Harbor Intl to Dulles Intl. Data last updated December 15, 2025 and is based on user searches.

Wed 12/2411:35 pmPHX - IAD

Nonstop4h 15mUnited Airlines

Wed 12/315:40 pmIAD - PHX

Nonstop5h 12mUnited Airlines

Deal found 12/14

$240

Thu 12/256:00 amPHX - IAD

1 stop7h 14mDelta

Thu 1/16:00 amIAD - PHX

1 stop7h 21mDelta

Deal found 12/14

$257

Thu 12/257:00 amPHX - IAD

1 stop6h 14mDelta

Wed 1/146:15 pmIAD - PHX

1 stop7h 25mDelta

Deal found 12/13

$261

Tue 12/304:49 pmPHX - IAD

2 stops22h 58mFrontier

Mon 1/126:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$272

Thu 1/86:30 amPHX - IAD

1 stop12h 26mFrontier

Sun 1/116:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$217

Fri 1/96:00 amPHX - IAD

1 stop8h 46mFrontier

Mon 1/126:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/13

$267

Mon 1/126:00 amPHX - IAD

1 stop7h 27mFrontier

Mon 3/238:09 amIAD - PHX

1 stop18h 35mFrontier

Deal found 12/14

$252

Tue 1/135:10 pmPHX - IAD

2 stops16h 33mMultiple Airlines

Tue 2/38:00 amIAD - PHX

1 stop10h 21mMultiple Airlines

Deal found 12/14

$225

Tue 1/135:05 pmPHX - IAD

1 stop19h 04mBreeze Airways

Tue 2/38:00 amIAD - PHX

1 stop10h 21mBreeze Airways

Deal found 12/14

$264

Wed 1/2811:55 amPHX - IAD

1 stop6h 50mDelta

Tue 2/102:15 pmIAD - PHX

1 stop8h 47mDelta

Deal found 12/14

$265

Thu 1/296:00 amPHX - IAD

1 stop8h 28mFrontier

Fri 1/3010:50 amIAD - PHX

1 stop14h 18mFrontier

Deal found 12/13

$238

One-way flights from Sky Harbor Intl to Dulles Intl
Search for one-way flight options from Sky Harbor Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Fri 1/306:00 amPHX - IAD

1 stop8h 33mFrontier

Deal found 12/13

$126

Sat 2/1410:58 amPHX - IAD

1 stop7h 55mUnited Airlines

Deal found 12/14

$129

Fri 3/69:42 amPHX - IAD

1 stop12h 49mFrontier

Deal found 12/14

$132

Wed 1/217:30 amPHX - IAD

1 stop8h 51mDelta

Deal found 12/14

$133

Wed 1/142:38 pmPHX - IAD

3 stops25h 46mMultiple Airlines

Deal found 12/13

$134

Thu 1/1510:16 pmPHX - IAD

3 stops34h 51mMultiple Airlines

Deal found 12/14

$135

Sun 1/187:45 amPHX - IAD

2 stops22h 06mFrontier

Deal found 12/14

$136

Mon 1/126:30 amPHX - IAD

3 stops27h 13mMultiple Airlines

Deal found 12/13

$138

Mon 3/93:50 pmPHX - IAD

2 stops16h 33mMultiple Airlines

Deal found 12/14

$140

Mon 1/510:31 pmPHX - IAD

2 stops34h 57mFrontier

Deal found 12/14

$141

Wed 1/213:13 pmPHX - IAD

Nonstop4h 12mUnited Airlines

Deal found 12/14

$143

Sun 2/86:00 amPHX - IAD

1 stop8h 33mFrontier

Deal found 12/13

$144

Find flight deals from Sky Harbor Intl to Dulles Intl

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$214 (Kiwi.com)
One-way from	$126 (Frontier)
Popular in	January
Cheapest in	August
Average price	$448
Good round-trip deal	$415 or less
Good one-way deal	$185 or less

Provider with most accurate pricing for Phoenix Sky Harbor Intl-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Washington, D.C. Dulles Intl flights.

Search Deals

From Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($47 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 December 2025

Search Deals

Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl.

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 1/28

11:55 am-8:45 pm

1 stop6h 50m

Washington, D.C. Dulles Intl

Tue 2/10

2:15 pm-9:02 pm

1 stop8h 47m

$265

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 2/24

8:20 pm-5:27 pm

1 stop19h 07m

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-11:40 am

1 stop19h 20m

$265

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 1/28

7:30 am-6:21 pm

1 stop8h 51m

Washington, D.C. Dulles Intl

Sat 1/31

12:23 pm-10:40 pm

1 stop12h 17m

$280

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 1/9

3:57 pm-11:28 am

2 stops17h 31m

Washington, D.C. Dulles Intl

Sun 1/11

9:59 pm-12:50 pm

1 stop16h 51m

$282

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 1/21

7:30 am-6:21 pm

1 stop8h 51m

Washington, D.C. Dulles Intl

Sun 1/25

7:30 am-3:45 pm

1 stop10h 15m

$285

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 1/29

12:05 pm-11:10 pm

1 stop9h 05m

Washington, D.C. Dulles Intl

Tue 2/10

6:00 am-11:24 am

1 stop7h 24m

$285

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/24

12:42 pm-5:21 pm

1 stop26h 39m

Washington, D.C. Dulles Intl

Sat 1/10

5:26 pm-10:59 am

1 stop19h 33m

$286

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 2/4

2:20 pm-11:48 pm

1 stop7h 28m

Washington, D.C. Dulles Intl

Sun 2/8

7:00 am-7:04 pm

2 stops14h 04m

$290

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 2/18

3:12 pm-9:25 pm

Nonstop4h 13m

Washington, D.C. Dulles Intl

Sat 2/21

5:33 pm-8:51 pm

Nonstop5h 18m

$292

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 1/6

4:41 pm-5:04 pm

1 stop22h 23m

Washington, D.C. Dulles Intl

Tue 1/13

5:26 pm-2:00 pm

1 stop22h 34m

$296

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 21 results

Compare providers for flights from Sky Harbor Intl to Dulles Intl

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Cheapfaremart	Price 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

Prices

Airlines

Delays

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

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, January 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 $150). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $249). 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?

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?

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings 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.

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

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.

IAD

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

Our travel experts

Brandon Schultz

Expert on PHX

Ramsey Qubein

Expert on IAD

Reviews of airlines servicing Dulles Intl

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

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Delta

7.9

Good

8,006 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,092 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Frontier

5.8

Fair

3,081 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

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 6h 50m. Fly via Delta or Alaska 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 $135, 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 Delta and Southwest - these airlines can fly you to your destination from $187 and $236, respectively. Frontier is currently priced 65% 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?
$85 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $130 and $138, respectively.
What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Consider Avianca (95%), United Airlines (91%) or Lufthansa (90%) 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 $153. While the most popular route (Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl) can be booked for $182 on average, our data indicates $968 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, January 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 $150). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $249). 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.

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Top 4 airlines flying from Sky Harbor Intl to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$146	Average$261	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$188	Average$318	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$234	Average$401	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$264	Average$407	FlexibilityNo cancel fee	On-time69%

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$126+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.

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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 Wednesday

Cheap flight deals from Sky Harbor Intl to Dulles Intl

Cheapest flights from Sky Harbor Intl to Dulles IntlExplore 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 December 15, 2025.

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 December 15, 2025.

Find flight deals from Sky Harbor Intl to Dulles Intl

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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.

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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 December.

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.

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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?

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

What is the cheapest time of day to fly from PHX to IAD?

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

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

How often are flights from Phoenix to Washington, D.C. delayed?

What is the most punctual flight time for Phoenix to Washington, D.C. flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Phoenix to Washington, D.C. flights?

What’s the top layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

What’s the cheapest layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

What’s the fastest layover option from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

Which airport typically offers the quickest layover for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?

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

AI-powered summary based on content written by travel experts. AI can make mistakes.

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

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Reviews of airlines servicing Dulles Intl

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.

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?

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

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

What are the most reliable airlines 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?

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

How can I 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?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Sky Harbor Intl to Dulles Intl

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Top 4 airlines flying from Sky Harbor Intl to Dulles Intl

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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 December 15, 2025.