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.

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.

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 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.

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.

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 (94%), Lufthansa (93%) or United Airlines (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 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 28, 2025.

Sun 12/2812:59 amPHX - IAD

1 stop18h 04mFrontier

Fri 1/26:05 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/25

$387

Mon 12/296:00 amPHX - IAD

1 stop10h 16mFrontier

Sun 1/49:58 pmIAD - PHX

1 stop27h 46mFrontier

Deal found 12/25

$401

Mon 12/296:00 amPHX - IAD

1 stop10h 16mFrontier

Sat 1/35:15 amIAD - PHX

1 stop12h 03mFrontier

Deal found 12/26

$432

Fri 12/2612:59 amPHX - IAD

1 stop18h 31mFrontier

Sun 1/49:58 pmIAD - PHX

1 stop27h 46mFrontier

Deal found 12/26

$438

Sat 12/276:00 amPHX - IAD

1 stop10h 16mFrontier

Sat 1/35:15 amIAD - PHX

1 stop12h 03mFrontier

Deal found 12/26

$452

Mon 12/296:00 amPHX - IAD

1 stop10h 16mFrontier

Wed 12/316:05 amIAD - PHX

1 stop9h 07mFrontier

Deal found 12/26

$512

Mon 12/295:21 pmPHX - IAD

2 stops16h 02mMultiple Airlines

Sat 1/38:00 amIAD - PHX

1 stop27h 44mMultiple Airlines

Deal found 12/26

$519

Sat 12/276:00 amPHX - IAD

1 stop10h 16mFrontier

Wed 12/316:05 amIAD - PHX

1 stop9h 07mFrontier

Deal found 12/25

$532

Tue 12/303:16 pmPHX - IAD

1 stop20h 29mMultiple Airlines

Wed 1/78:00 amIAD - PHX

1 stop27h 48mMultiple Airlines

Deal found 12/28

$566

Mon 12/295:21 pmPHX - IAD

2 stops16h 02mMultiple Airlines

Wed 12/318:00 amIAD - PHX

1 stop27h 44mMultiple Airlines

Deal found 12/26

$569

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 28, 2025.

Fri 2/138:20 amPHX - IAD

1 stop7h 07mAlaska Airlines

Mon 2/166:20 pmIAD - PHX

1 stop19h 20mAlaska Airlines

Deal found 12/27

$265

Tue 1/2011:53 pmPHX - IAD

1 stop7h 20mDelta

Sat 1/2412:23 pmIAD - PHX

1 stop12h 17mDelta

Deal found 12/28

$276

Thu 2/58:30 amPHX - IAD

Nonstop4h 18mUnited Airlines

Sat 2/75:24 pmIAD - PHX

Nonstop5h 13mUnited Airlines

Deal found 12/27

$285

Tue 1/204:07 pmPHX - IAD

1 stop6h 17mDelta

Sun 1/257:30 amIAD - PHX

1 stop10h 15mDelta

Deal found 12/28

$281

Tue 2/38:30 amPHX - IAD

Nonstop4h 18mUnited Airlines

Fri 2/65:24 pmIAD - PHX

Nonstop5h 13mUnited Airlines

Deal found 12/26

$285

Thu 2/198:28 pmPHX - IAD

1 stop9h 03mUnited Airlines

Mon 2/235:33 pmIAD - PHX

Nonstop5h 18mUnited Airlines

Deal found 12/26

$291

Wed 1/282:20 pmPHX - IAD

1 stop7h 28mDelta

Tue 2/106:00 amIAD - PHX

1 stop8h 29mDelta

Deal found 12/27

$303

Wed 1/288:30 amPHX - IAD

Nonstop4h 18mUnited Airlines

Fri 1/308:15 amIAD - PHX

1 stop8h 04mUnited Airlines

Deal found 12/25

$295

Wed 1/2112:05 pmPHX - IAD

1 stop9h 05mDelta

Sun 1/257:30 amIAD - PHX

1 stop10h 15mDelta

Deal found 12/28

$305

Thu 2/2611:30 amPHX - IAD

1 stop7h 11mUnited Airlines

Mon 3/25:33 pmIAD - PHX

Nonstop5h 18mUnited Airlines

Deal found 12/25

$295

Thu 2/1212:58 pmPHX - IAD

1 stop5h 55mUnited Airlines

Thu 2/195:33 pmIAD - PHX

Nonstop5h 18mUnited Airlines

Deal found 12/26

$295

Tue 2/32:42 pmPHX - IAD

1 stop6h 40mUnited Airlines

Wed 2/45:24 pmIAD - PHX

Nonstop5h 13mUnited Airlines

Deal found 12/27

$295

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 28, 2025 and is based on user searches.

Thu 1/86:30 amPHX - IAD

1 stop12h 26mFrontier

Sun 1/116:00 amIAD - PHX

1 stop11h 13mFrontier

Deal found 12/26

$238

Thu 1/159:35 pmPHX - IAD

2 stops20h 23mFrontier

Sun 1/186:00 amIAD - PHX

1 stop11h 25mFrontier

Deal found 12/26

$205

Fri 1/164:59 pmPHX - IAD

2 stops16h 08mMultiple Airlines

Sun 1/186:00 amIAD - PHX

1 stop11h 25mMultiple Airlines

Deal found 12/26

$209

Fri 1/166:00 amPHX - IAD

1 stop27h 07mFrontier

Mon 1/198:51 amIAD - PHX

1 stop8h 34mFrontier

Deal found 12/27

$217

Fri 1/166:00 amPHX - IAD

1 stop27h 07mMultiple Airlines

Mon 1/1910:08 pmIAD - PHX

2 stops17h 28mMultiple Airlines

Deal found 12/26

$218

Sat 1/171:30 pmPHX - IAD

1 stop6h 40mSouthwest

Tue 1/204:30 pmIAD - PHX

Nonstop5h 20mSouthwest

Deal found 12/27

$227

Sat 1/178:11 pmPHX - IAD

2 stops13h 32mMultiple Airlines

Tue 1/208:00 amIAD - PHX

1 stop10h 21mMultiple Airlines

Deal found 12/27

$237

Sat 1/178:55 amPHX - IAD

Nonstop4h 00mSouthwest

Sat 1/247:00 amIAD - PHX

Nonstop5h 15mSouthwest

Deal found 12/27

$240

Sun 1/256:21 pmPHX - IAD

1 stop13h 34mFrontier

Sun 2/15:37 pmIAD - PHX

1 stop23h 45mFrontier

Deal found 12/26

$226

Mon 1/266:00 amPHX - IAD

1 stop8h 28mMultiple Airlines

Thu 1/295:26 pmIAD - PHX

1 stop7h 56mMultiple Airlines

Deal found 12/27

$243

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 28, 2025.

Thu 2/267:36 pmPHX - IAD

2 stops13h 07mFrontier

Deal found 12/27

$126

Tue 1/272:53 pmPHX - IAD

2 stops41h 49mMultiple Airlines

Deal found 12/26

$127

Wed 1/145:10 pmPHX - IAD

2 stops23h 14mFrontier

Deal found 12/26

$128

Tue 1/201:31 pmPHX - IAD

1 stop6h 47mUnited Airlines

Deal found 12/26

$129

Sun 1/2510:09 amPHX - IAD

3 stops26h 09mMultiple Airlines

Deal found 12/27

$130

Tue 1/135:05 pmPHX - IAD

1 stop19h 04mBreeze Airways

Deal found 12/26

$132

Fri 2/138:20 amPHX - IAD

1 stop7h 07mAlaska Airlines

Deal found 12/27

$133

Thu 1/153:01 pmPHX - IAD

2 stops26h 57mFrontier

Deal found 12/26

$134

Thu 1/298:36 pmPHX - IAD

3 stops36h 08mMultiple Airlines

Deal found 12/27

$137

Tue 1/206:42 pmPHX - IAD

3 stops43h 46mMultiple Airlines

Deal found 12/27

$138

Sun 2/226:00 amPHX - IAD

2 stops25h 25mFrontier

Deal found 12/26

$139

Tue 1/134:05 pmPHX - IAD

3 stops42h 58mMultiple Airlines

Deal found 12/26

$140

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	$205 (Kiwi.com)
One-way from	$126 (Kiwi.com)
Popular in	December
Cheapest in	August
Average price	$464
Good round-trip deal	$381 or less
Good one-way deal	$198 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. 12% potential increase in price ($54 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% 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

Fri 2/13

8:20 am-5:27 pm

1 stop7h 07m

Washington, D.C. Dulles Intl

Mon 2/16

6:20 pm-11:40 am

1 stop19h 20m

$265

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 1/20

11:53 pm-9:13 am

1 stop7h 20m

Washington, D.C. Dulles Intl

Sat 1/24

12:23 pm-10:40 pm

1 stop12h 17m

$276

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 1/20

4:07 pm-12:24 am

1 stop6h 17m

Washington, D.C. Dulles Intl

Sun 1/25

7:30 am-3:45 pm

1 stop10h 15m

$281

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 2/5

8:30 am-2:48 pm

Nonstop4h 18m

Washington, D.C. Dulles Intl

Sat 2/7

5:24 pm-8:37 pm

Nonstop5h 13m

$285

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 2/3

8:30 am-2:48 pm

Nonstop4h 18m

Washington, D.C. Dulles Intl

Fri 2/6

5:24 pm-8:37 pm

Nonstop5h 13m

$285

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 2/19

8:28 pm-7:31 am

1 stop9h 03m

Washington, D.C. Dulles Intl

Mon 2/23

5:33 pm-8:51 pm

Nonstop5h 18m

$291

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 1/28

8:30 am-2:48 pm

Nonstop4h 18m

Washington, D.C. Dulles Intl

Fri 1/30

8:15 am-2:19 pm

1 stop8h 04m

$295

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 2/26

11:30 am-8:41 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Mon 3/2

5:33 pm-8:51 pm

Nonstop5h 18m

$295

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Thu 2/12

12:58 pm-8:53 pm

1 stop5h 55m

Washington, D.C. Dulles Intl

Thu 2/19

5:33 pm-8:51 pm

Nonstop5h 18m

$295

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Tue 2/3

2:42 pm-11:22 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Wed 2/4

5:24 pm-8:37 pm

Nonstop5h 13m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 23 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 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?

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. Saturday afternoons 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

8.0

Very good

4,256 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

8.0

Very good

4,256 reviews

Southwest

8.0

Very good

4,256 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

8,019 reviews

Southwest

8.0

Very good

4,256 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

9,113 reviews

Southwest

8.0

Very good

4,256 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

3,065 reviews

Southwest

8.0

Very good

4,256 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 4h 18m. Fly via Alaska Airlines, Delta, 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 $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 $125 and $138, respectively.
What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Consider Avianca (94%), Lufthansa (93%) or United Airlines (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 $138. While the most popular route (Phoenix Sky Harbor Intl - Washington, D.C. Dulles Intl) can be booked for $169 on average, our data indicates $814 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.

See more FAQs

Alexandria

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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$230	Average$400	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$262	Average$408	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 2/26. 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 28, 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 28, 2025.

Find flight deals from Sky Harbor Intl to Dulles Intl

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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.

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?

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

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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?

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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 28, 2025.