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Dulles Intl

$49+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IAD
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap 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 December 28, 2025.

This Trip.com deal was found by Cheapflights users on 12/27. 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 12/307:40 amPIT - IAD
1 stop3h 43mSouthern / Mokulele
Sun 1/45:40 pmIAD - PIT
1 stop3h 49mSouthern / Mokulele
Deal found 12/27$125
This Trip.com deal was found by Cheapflights users on 12/28. 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.
Mon 12/297:40 amPIT - IAD
1 stop3h 43mSouthern / Mokulele
Fri 1/28:25 amIAD - PIT
1 stop5h 57mSouthern / Mokulele
Deal found 12/28$166
This Kiwi.com deal was found by Cheapflights users on 12/27. 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.
Tue 12/3011:55 amPIT - IAD
1 stop4h 18mSouthern / Mokulele
Thu 1/2212:50 pmIAD - PIT
1 stop4h 17mSouthern / Mokulele
Deal found 12/27$167
This Southern / Mokulele deal was found by Cheapflights users on 12/28. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:55 amPIT - IAD
1 stop4h 18mSouthern / Mokulele
Fri 1/212:50 pmIAD - PIT
1 stop4h 17mSouthern / Mokulele
Deal found 12/28$168
This CheapOair deal was found by Cheapflights users on 12/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:40 amPIT - IAD
1 stop3h 43mSouthern / Mokulele
Thu 4/212:50 pmIAD - PIT
1 stop4h 17mSouthern / Mokulele
Deal found 12/26$169
This Kiwi.com deal was found by Cheapflights users on 12/25. 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.
Wed 12/3110:05 pmEWR - IAD
1 stop13h 33mMultiple Airlines
Wed 1/75:42 pmIAD - EWR
1 stop7h 28mMultiple Airlines
Deal found 12/25$197
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/3010:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Fri 1/308:20 amIAD - LGA
Nonstop1h 27mUnited Airlines
Deal found 12/26$206
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/309:44 pmEWR - IAD
Nonstop1h 22mUnited Airlines
Fri 1/3010:40 pmIAD - EWR
Nonstop1h 19mUnited Airlines
Deal found 12/26$206
This Delta deal was found by Cheapflights users on 12/26. 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.
Tue 12/303:17 pmJFK - IAD
Nonstop1h 31mDelta
Fri 1/307:49 pmIAD - JFK
Nonstop1h 38mDelta
Deal found 12/26$206
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/3010:26 amLGA - IAD
Nonstop1h 29mUnited Airlines
Sat 1/1012:40 pmIAD - LGA
Nonstop1h 34mUnited Airlines
Deal found 12/26$215
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Mon 12/297:40 amPIT - IAD
1 stop3h 43mSouthern / Mokulele
Tue 12/308:25 amIAD - PIT
1 stop5h 57mSouthern / Mokulele
Deal found 12/26$221
This Expedia deal was found by Cheapflights users on 12/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:40 amPIT - IAD
1 stop3h 43mSouthern / Mokulele
Sat 1/38:25 amIAD - PIT
1 stop5h 57mSouthern / Mokulele
Deal found 12/26$222

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$123
(Yatra.com)

One-way from

$49
(United Airlines)

Popular in

April

Cheapest in

November

Average price

$254

Good round-trip deal

$308 or less

Good one-way deal

$64 or less
Provider with most accurate pricing for Philadelphia-Washington, D.C. (WAS) flight deals.
Search Deals
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
Search Deals
One-way flight from Pennsylvania to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($10 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 Pennsylvania to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Pennsylvania to Washington, D.C. Dulles Intl.
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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 December 28, 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

Mon 1/12

7:40 am-11:26 am

1 stop3h 46m

Washington, D.C. Dulles Intl

Thu 1/15

5:40 pm-9:29 pm

1 stop3h 49m

$125

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Wed 2/4

10:29 am-11:54 am

Nonstop1h 25m

Washington, D.C. Dulles Intl

Fri 2/6

10:20 pm-11:43 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Fri 1/16

10:15 am-11:38 am

Nonstop1h 23m

Washington, D.C. Dulles Intl

Sun 1/18

7:49 pm-9:27 pm

Nonstop1h 38m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Tue 1/20

10:28 am-11:55 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

Tue 1/20

10:20 pm-11:43 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Wed 4/29

11:14 am-12:48 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sat 5/2

7:40 pm-9:13 pm

Nonstop1h 33m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 1/31

2:55 pm-4:25 pm

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sat 1/31

10:20 pm-11:43 pm

Nonstop1h 23m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Sun 2/1

5:35 pm-7:09 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Wed 2/4

12:23 pm-1:49 pm

Nonstop1h 26m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Fri 3/13

6:00 am-7:29 am

Nonstop1h 29m

Washington, D.C. Dulles Intl

Sat 3/21

10:22 pm-11:44 pm

Nonstop1h 22m

$129

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Sat 1/24

5:35 pm-7:09 pm

Nonstop1h 34m

Washington, D.C. Dulles Intl

Sat 1/31

7:49 pm-9:27 pm

Nonstop1h 38m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sun 1/25

6:00 am-7:30 am

Nonstop1h 30m

Washington, D.C. Dulles Intl

Sun 2/1

10:20 pm-11:43 pm

Nonstop1h 23m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

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 $92). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of $135). 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 December 28, 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 44% 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 27, 2025.

Travelers seeking maximum savings on their Pennsylvania to Washington, D.C. Dulles Intl Airport flight should consider departing on Sunday mornings 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 December 28, 2025.

The most flights from USPA to IAD are scheduled on a Tuesday (13 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 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 23m. Pennsylvania and Washington, D.C. Dulles Intl Airport are separated by a distance of 227 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Most travelers choose Newark - Washington, D.C. Dulles Intl, New York John F Kennedy Intl - 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: ANA (100%), Mesa Airlines (100%), GoJet (92%).

  • 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 $1,055, our data shows the cheapest flight currently is $178. When looking at the most popular route, (Newark - Washington, D.C. Dulles Intl), you can expect to pay $97 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 $92). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of $135). 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
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Bowie
Largo
McLean
Clinton
Cordova

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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.
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Tampa to Reagan-National flights
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Minneapolis to Baltimore flights
Minneapolis to Dulles Intl flights
Miami to Baltimore flights
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LaGuardia to Reagan-National flights
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Denver to Reagan-National flights
George Bush Intcntl to Baltimore flights
George Bush Intcntl to Reagan-National flights
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Detroit to Baltimore flights
Miami to Reagan-National 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Southern / MokuleleCheapest$99Average$171FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$179Average$300FlexibilityNo cancel feeOn-time69%

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