Dulles Intl

$50+ Cheap flights from Pennsylvania to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IAD
Aug 5 — Aug 121
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Cheap flight deals from Pennsylvania to Dulles Intl

Keep the following information in mind while searching for Pennsylvania to Dulles Intl flight deals. Data was last updated July 31, 2025.

Round-trip from

$112
(Trip.com)

One-way from

$50
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$294

Good round-trip deal

$292 or less

Good one-way deal

$64 or less
From Pennsylvania to Washington, D.C. Dulles Intl
One-way flight from Pennsylvania to Washington, D.C. Dulles Intl
High demand for flights, 3% potential price rise
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Pennsylvania to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Pennsylvania to Washington, D.C. Dulles Intl.

Find flight deals from Pennsylvania to Dulles Intl

Cheapest flights from Pennsylvania to Dulles Intl
Explore the most affordable flight options available from Pennsylvania to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This iWofly deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:40 amPIT - IAD
1 stop3h 46mSouthern / Mokulele
Tue 9/28:25 amIAD - PIT
1 stop5h 57mSouthern / Mokulele
Deal found 7/29$102
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/46:00 amLGA - IAD
Nonstop1h 30mUnited Airlines
Sun 9/710:08 pmIAD - LGA
Nonstop1h 22mUnited Airlines
Deal found 7/30$129
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/46:00 amEWR - IAD
Nonstop1h 19mUnited Airlines
Sun 9/710:32 pmIAD - EWR
Nonstop1h 24mUnited Airlines
Deal found 7/30$129
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 9/45:50 pmJFK - IAD
Nonstop1h 53mDelta
Sun 9/78:23 pmIAD - JFK
Nonstop1h 39mDelta
Deal found 7/30$129
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:55 amEWR - IAD
1 stop7h 00mFrontier
Mon 9/221:55 pmIAD - EWR
1 stop10h 39mFrontier
Deal found 7/30$176
This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/304:59 pmEWR - IAD
1 stop6h 27mDelta
Sat 9/66:15 pmIAD - EWR
1 stop5h 15mDelta
Deal found 7/31$177
This Frontier deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2010:00 pmLGA - IAD
1 stop11h 27mFrontier
Sat 8/2312:57 pmIAD - LGA
1 stop8h 02mFrontier
Deal found 7/29$178
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Wed 9/176:15 amPIT - IAD
Nonstop1h 13mUnited Airlines
Sun 9/281:00 pmIAD - PIT
Nonstop1h 03mUnited Airlines
Deal found 7/30$179
This United Airlines deal was found by Cheapflights users on 7/30. 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 8/2810:35 amMDT - IAD
Nonstop1h 00mUnited Airlines
Thu 9/412:45 pmIAD - MDT
Nonstop1h 03mUnited Airlines
Deal found 7/30$179
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/191:00 pmJFK - IAD
1 stop8h 34mFrontier
Sat 8/236:10 amIAD - JFK
1 stop5h 49mFrontier
Deal found 7/29$179
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:58 pmPHL - IAD
Nonstop1h 07mUnited Airlines
Mon 9/112:52 pmIAD - PHL
Nonstop1h 14mUnited Airlines
Deal found 7/29$179
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:55 pmSCE - IAD
Nonstop1h 00mUnited Airlines
Sat 11/18:33 amIAD - SCE
Nonstop1h 05mUnited Airlines
Deal found 7/29$179

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Pennsylvania to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Pennsylvania

Fly to

Dulles Intl

Route

Depart

Return

Price

PittsburghWashington, D.C.

PIT - IAD

PITIAD

Pittsburgh

Tue 8/5

7:40 am-11:26 am

1 stop3h 46m

Washington, D.C. Dulles Intl

Tue 9/2

8:25 am-2:22 pm

1 stop5h 57m

$102

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 9/4

10:25 am-11:54 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 9/6

12:40 pm-2:13 pm

Nonstop1h 33m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Thu 9/4

5:50 pm-7:43 pm

Nonstop1h 53m

Washington, D.C. Dulles Intl

Sun 9/7

8:23 pm-10:02 pm

Nonstop1h 39m

$129

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Thu 9/4

7:15 pm-8:41 pm

Nonstop1h 26m

Washington, D.C. Dulles Intl

Sat 9/6

10:32 pm-11:56 pm

Nonstop1h 24m

$129

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Fri 9/19

5:55 am-12:55 pm

1 stop7h 00m

Washington, D.C. Dulles Intl

Mon 9/22

1:55 pm-12:34 am

1 stop10h 39m

$176

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Sat 8/30

4:59 pm-11:26 pm

1 stop6h 27m

Washington, D.C. Dulles Intl

Sat 9/6

6:15 pm-11:30 pm

1 stop5h 15m

$177

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 8/20

10:00 pm-9:27 am

1 stop11h 27m

Washington, D.C. Dulles Intl

Sat 8/23

12:57 pm-8:59 pm

1 stop8h 02m

$178

PittsburghWashington, D.C.

PIT - IAD

PITIAD

Pittsburgh

Wed 9/17

6:15 am-7:28 am

Nonstop1h 13m

Washington, D.C. Dulles Intl

Sun 9/28

1:00 pm-2:03 pm

Nonstop1h 03m

$179

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Tue 8/19

1:00 pm-9:34 pm

1 stop8h 34m

Washington, D.C. Dulles Intl

Sat 8/23

6:10 am-11:59 am

1 stop5h 49m

$179

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Thu 8/28

10:35 am-11:35 am

Nonstop1h 00m

Washington, D.C. Dulles Intl

Thu 9/4

12:45 pm-1:48 pm

Nonstop1h 03m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 59 results
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Best time to book a flight from Pennsylvania to Dulles Intl

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

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

Currently, July is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 PA to IAD?

Find hourly flight availability from Pennsylvania to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from Pennsylvania to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Explore weekly flight availability from Pennsylvania to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 31, 2025.

The most flights from USPA to IAD are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

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 July 31, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and JetBlue from Pennsylvania to Washington, D.C. Dulles Intl Airport to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania 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 to fly from Pennsylvania to Washington, D.C. Dulles Intl Airport one-way?

    One-way options have recently been found by users for as low as $50 on Southern / Mokulele. Other airlines that offer cheap prices include United Airlines from $65 and Delta from $65 one-way.

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Pennsylvania to Washington, D.C. Dulles Intl Airport on time: ANA (80%), Air Canada (75%), CommutAir (71%).

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

    While on average a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport is generally $1,205, our data shows the cheapest flight currently is $183. When looking at the most popular route, (New York John F Kennedy Intl - Washington, D.C. Dulles Intl), you can expect to pay $129 for that flight.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

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Alternative routes for Pennsylvania to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Pennsylvania to Dulles Intl

Discover the top 2 airlines that operate flights from Pennsylvania to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$94Average$147FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$287FlexibilityNo cancel feeOn-time69%

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