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Dulles Intl

$55+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IAD
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$110
(Priceline)

One-way from

$55
(Priceline)

Popular in

April

Cheapest in

November

Average price

$204

Good round-trip deal

$105 or less

Good one-way deal

$59 or less
Provider with most accurate pricing for Philadelphia-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Washington, D.C. (WAS) flights.
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From Pennsylvania to Washington, D.C. Dulles Intl
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One-way flight from Pennsylvania to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 14% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% 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 Pennsylvania to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Pennsylvania to Washington, D.C. Dulles Intl.
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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 November 6, 2025.

This Frontier deal was found by Cheapflights users on 11/3. 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 12/36:20 amLGA - IAD
1 stop8h 09mFrontier
Wed 12/109:00 amIAD - LGA
1 stop7h 29mFrontier
Deal found 11/3$110
This Priceline deal was found by Cheapflights users on 11/4. 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.
Thu 12/410:00 amJFK - IAD
1 stop8h 18mFrontier
Thu 12/47:18 pmIAD - JFK
1 stop5h 41mFrontier
Deal found 11/4$110
This Frontier deal was found by Cheapflights users on 11/6. 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 12/410:00 amJFK - IAD
1 stop8h 18mFrontier
Mon 12/86:58 pmIAD - JFK
1 stop6h 01mFrontier
Deal found 11/6$111
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/36:00 amLGA - IAD
Nonstop1h 27mUnited Airlines
Wed 12/310:23 pmIAD - LGA
Nonstop1h 21mUnited Airlines
Deal found 11/4$117
This United Airlines deal was found by Cheapflights users on 11/5. 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 12/57:29 pmLGA - IAD
Nonstop1h 28mUnited Airlines
Sun 12/78:15 amIAD - LGA
Nonstop1h 25mUnited Airlines
Deal found 11/5$118
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:55 amEWR - IAD
1 stop12h 23mFrontier
Mon 12/86:58 pmIAD - EWR
1 stop6h 12mFrontier
Deal found 11/5$119
This Gotogate deal was found by Cheapflights users on 11/6. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:20 amLGA - IAD
1 stop11h 58mFrontier
Mon 12/85:45 amIAD - LGA
1 stop5h 44mFrontier
Deal found 11/6$120
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:00 amJFK - IAD
1 stop10h 20mFrontier
Thu 11/206:41 pmIAD - JFK
1 stop5h 43mFrontier
Deal found 11/5$120
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/243:07 pmEWR - IAD
Nonstop1h 23mUnited Airlines
Fri 12/266:00 amIAD - EWR
Nonstop1h 18mUnited Airlines
Deal found 11/4$121
This Trip.com deal was found by Cheapflights users on 11/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:30 pmLGA - IAD
1 stop7h 50mFrontier
Wed 11/198:40 amIAD - LGA
1 stop10h 49mFrontier
Deal found 11/4$123
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amEWR - IAD
Nonstop1h 20mUnited Airlines
Tue 12/26:00 amIAD - EWR
Nonstop1h 13mUnited Airlines
Deal found 11/5$123
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/410:00 amJFK - IAD
1 stop8h 18mFrontier
Sun 12/75:45 amIAD - JFK
1 stop19h 14mFrontier
Deal found 11/4$125

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 November 6, 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

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 12/4

6:00 am-7:27 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Sat 12/6

12:40 pm-2:14 pm

Nonstop1h 34m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 1/11

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 1/11

12:40 pm-2:14 pm

Nonstop1h 34m

$127

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 1/18

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 1/18

12:40 pm-2:14 pm

Nonstop1h 34m

$127

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 1/30

2:55 pm-4:25 pm

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 2/1

8:20 am-9:47 am

Nonstop1h 27m

$127

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Thu 1/22

10:28 am-11:55 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Mon 1/26

10:20 pm-11:43 pm

Nonstop1h 23m

$127

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Thu 1/22

7:50 pm-9:13 pm

Nonstop1h 23m

Washington, D.C. Dulles Intl

Mon 1/26

6:00 am-7:19 am

Nonstop1h 19m

$127

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Mon 11/24

6:00 am-7:20 am

Nonstop1h 20m

Washington, D.C. Dulles Intl

Mon 11/24

10:15 pm-11:38 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Fri 12/12

5:46 pm-7:19 pm

Nonstop1h 33m

Washington, D.C. Dulles Intl

Sun 12/14

7:59 pm-9:29 pm

Nonstop1h 30m

$137

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Thu 1/15

10:20 am-11:43 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Tue 1/20

7:49 pm-9:27 pm

Nonstop1h 38m

$137

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Thu 1/22

10:20 am-11:43 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Mon 1/26

7:49 pm-9:27 pm

Nonstop1h 38m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 60 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, February is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $89). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $112). 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 November 6, 2025.

A simple way to save on the total cost of your ticket is to fly from Pennsylvania to Washington, D.C. Dulles Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Pennsylvania to Dulles Intl. Price data was last updated on December 16, 2024.

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

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 November 6, 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 (3 on average).

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.

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

    Departing from Pennsylvania to Washington, D.C. Dulles Intl Airport will take you 1h 27m. Pennsylvania and Washington, D.C. Dulles Intl Airport are separated by a distance of 228 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $59 on United Airlines. Other airlines that offer cheap prices include Delta from $69 and Frontier from $78 one-way.

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

    Most travelers choose New York John F Kennedy Intl - Washington, D.C. Dulles Intl, Newark - Washington, D.C. Dulles Intl or New York LaGuardia - Washington, D.C. Dulles Intl when deciding on the best route 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: Brussels Airlines (100%), Air China (94%), GoJet (87%).

  • 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 $1,163, our data shows the cheapest flight currently is $208. When looking at the most popular route, (New York John F Kennedy Intl - Washington, D.C. Dulles Intl), you can expect to pay $125 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, February is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $89). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $112). 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 Pennsylvania to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Baltimore flights
Los Angeles to Dulles Intl flights
Los Angeles to Reagan-National flights
Boston to Baltimore flights
Los Angeles to Baltimore flights
O'Hare Intl to Reagan-National flights
Seattle to Dulles Intl flights
O'Hare Intl to Dulles Intl flights
Boston to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
Seattle to Reagan-National flights
San Francisco to Reagan-National flights
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San Francisco to Dulles Intl flights
Atlanta to Reagan-National flights
Hobby to Baltimore flights
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San Francisco to Baltimore flights
Hobby to Dulles Intl flights
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Detroit to Baltimore flights
Denver to Dulles Intl flights
Boston to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Atlanta to Baltimore flights
Orlando to Reagan-National flights
Denver to Baltimore flights
Hobby to Reagan-National flights
Miami to Dulles Intl flights
Denver to Reagan-National flights
Orlando to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
George Bush Intcntl to Baltimore flights
Austin to Dulles Intl flights
Detroit to Reagan-National flights
Midway to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Miami to Reagan-National flights
Minneapolis to Reagan-National flights
Minneapolis to Baltimore flights
Minneapolis to Dulles Intl flights
Tampa to Reagan-National flights
Jacksonville to Baltimore flights
Orlando to Baltimore flights
Austin to Baltimore flights
Sky Harbor Intl to Dulles Intl flights

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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$94Average$168FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$297FlexibilityNo cancel feeOn-time69%

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