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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IAD
May 6 — May 131
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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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$127
(United Airlines)

One-way from

$50
(Trip.com)

Popular in

December

Cheapest in

November

Average price

$288

Good round-trip deal

$71 or less

Good one-way deal

$109 or less
Provider with most accurate pricing for Philadelphia-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Washington, D.C. (WAS) flights.
From Pennsylvania to Washington, D.C. Dulles Intl
One-way flight from Pennsylvania to Washington, D.C. Dulles Intl
High demand for flights, 8% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in May 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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 5/1410:28 amLGA - IAD
Nonstop1h 26mUnited Airlines
Wed 5/1410:10 pmIAD - LGA
Nonstop1h 20mUnited Airlines
Deal found 4/30$127
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1310:13 amJFK - IAD
Nonstop1h 32mDelta
Tue 5/138:33 pmIAD - JFK
Nonstop1h 27mDelta
Deal found 4/29$127
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/2810:09 amEWR - IAD
Nonstop1h 31mUnited Airlines
Sun 6/19:00 amIAD - EWR
Nonstop1h 21mUnited Airlines
Deal found 4/29$129
This Flightnetwork deal was found by Cheapflights users on 4/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1410:00 pmLGA - IAD
1 stop12h 09mFrontier
Sat 6/2112:24 pmIAD - LGA
1 stop8h 35mFrontier
Deal found 4/30$161
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1411:01 amEWR - IAD
1 stop12h 15mFrontier
Sat 6/214:16 pmIAD - EWR
1 stop8h 28mFrontier
Deal found 4/30$161
This Frontier deal was found by Cheapflights users on 4/30. 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.
Wed 5/149:00 amJFK - IAD
1 stop5h 50mFrontier
Wed 5/216:11 pmIAD - JFK
1 stop6h 09mFrontier
Deal found 4/30$161
This Southern / Mokulele deal was found by Cheapflights users on 4/30. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/711:55 amPIT - IAD
1 stop4h 20mSouthern / Mokulele
Sun 5/115:25 pmIAD - PIT
1 stop14h 25mSouthern / Mokulele
Deal found 4/30$173
This United Airlines deal was found by Cheapflights users on 4/30. 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 7/310:23 amPIT - IAD
Nonstop1h 09mUnited Airlines
Sun 7/68:30 amIAD - PIT
Nonstop1h 08mUnited Airlines
Deal found 4/30$179
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 7/910:40 amAVP - IAD
Nonstop1h 10mUnited Airlines
Sun 7/1310:45 pmIAD - AVP
Nonstop1h 13mUnited Airlines
Deal found 4/29$179
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/2710:35 amPHL - IAD
Nonstop1h 05mUnited Airlines
Tue 6/312:55 pmIAD - PHL
Nonstop1h 14mUnited Airlines
Deal found 4/29$179
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 5/2910:20 amSCE - IAD
Nonstop0h 57mUnited Airlines
Thu 6/58:29 amIAD - SCE
Nonstop1h 02mUnited Airlines
Deal found 4/29$179
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/45:15 amEWR - IAD
2 stops29h 47mMultiple Airlines
Fri 6/63:13 pmIAD - EWR
1 stop18h 52mMultiple Airlines
Deal found 4/30$213

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 May 1, 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

Wed 5/14

10:28 am-11:54 am

Nonstop1h 26m

Washington, D.C. Dulles Intl

Wed 5/14

10:10 pm-11:30 pm

Nonstop1h 20m

$127

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Tue 5/13

10:13 am-11:45 am

Nonstop1h 32m

Washington, D.C. Dulles Intl

Tue 5/13

8:33 pm-10:00 pm

Nonstop1h 27m

$127

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Wed 5/28

10:09 am-11:40 am

Nonstop1h 31m

Washington, D.C. Dulles Intl

Sun 6/1

9:00 am-10:21 am

Nonstop1h 21m

$129

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

Sat 6/14

10:00 pm-10:09 am

1 stop12h 09m

Washington, D.C. Dulles Intl

Sat 6/21

12:24 pm-8:59 pm

1 stop8h 35m

$161

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

Sat 6/14

11:01 am-11:16 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Sat 6/21

4:16 pm-12:44 am

1 stop8h 28m

$161

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

Wed 5/14

9:00 am-2:50 pm

1 stop5h 50m

Washington, D.C. Dulles Intl

Wed 5/21

6:11 pm-12:20 am

1 stop6h 09m

$161

PittsburghWashington, D.C.

PIT - IAD

PITIAD

Pittsburgh

Thu 7/3

10:23 am-11:32 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Sun 7/6

8:30 am-9:38 am

Nonstop1h 08m

$179

ScrantonWashington, D.C.

AVP - IAD

AVPIAD

Wilkes-Barre Scranton

Wed 7/9

10:40 am-11:50 am

Nonstop1h 10m

Washington, D.C. Dulles Intl

Sun 7/13

10:45 pm-11:58 pm

Nonstop1h 13m

$179

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

Tue 5/27

10:35 am-11:40 am

Nonstop1h 05m

Washington, D.C. Dulles Intl

Tue 6/3

5:30 pm-6:45 pm

Nonstop1h 15m

$179

State CollegeWashington, D.C.

SCE - IAD

SCEIAD

State College University Park

Thu 5/29

10:20 am-11:17 am

Nonstop0h 57m

Washington, D.C. Dulles Intl

Thu 6/5

8:29 am-9:31 am

Nonstop1h 02m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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, August is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 May 1, 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 May 1, 2025.

The most flights from USPA to IAD are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

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.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

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).

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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and United Airlines from Pennsylvania to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $64 and Delta from $64 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: Air China (89%), ANA (87%), Ethiopian Air (86%).

  • 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 $1,174, our data shows the cheapest flight currently is $153. When looking at the most popular route, (New York John F Kennedy Intl - Washington, D.C. Dulles Intl), you can expect to pay $127 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, August is the cheapest month in which you can book a flight from Pennsylvania to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Pennsylvania to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 Pennsylvania?

Book flights to Pennsylvania if you plan to visit one of these locations
Alexandria
Arlington
Woodbridge
Tysons
Fairfax
Springfield
Rockville
Fredericksburg
Silver Spring
Gaithersburg
Linthicum Heights
Falls Church
Laurel
Easton
Towson
Herndon
Sterling
Bowie
National Harbor
Oxon Hill

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$98Average$263FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$99Average$124FlexibilityNo cancel feeOn-timeN/A

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