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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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — IAD
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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Cheap flight deals from Pennsylvania to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Pennsylvania (USPA) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Frontier)

One-way from

$50
(iWofly)

Popular in

February

Cheapest in

November

Average price

$275

Good round-trip deal

$103 or less

Good one-way deal

$55 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. 7% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in January 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 enero 30, 2025.

This Frontier deal was found by Cheapflights users on 1/30. 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.
jue. 2/2711:15 amJFK - IAD
1 stop10h 10mFrontier
jue. 3/610:25 pmIAD - JFK
1 stop11h 50mFrontier
Deal found 1/30$106
This Frontier deal was found by Cheapflights users on 1/30. 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.
mar. 4/226:30 amLGA - IAD
1 stop7h 52mFrontier
mar. 5/611:47 amIAD - LGA
1 stop11h 16mFrontier
Deal found 1/30$110
This Frontier deal was found by Cheapflights users on 1/30. 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.
mié. 4/910:00 pmEWR - IAD
1 stop10h 36mFrontier
mié. 4/233:38 pmIAD - EWR
1 stop5h 27mFrontier
Deal found 1/30$111
This United Airlines deal was found by Cheapflights users on 1/30. 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.
sáb. 3/16:00 amLGA - IAD
Nonstop1h 26mUnited Airlines
sáb. 3/810:08 pmIAD - LGA
Nonstop1h 22mUnited Airlines
Deal found 1/30$117
This Delta deal was found by Cheapflights users on 1/30. 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.
mar. 3/115:49 pmJFK - IAD
Nonstop1h 30mDelta
mié. 3/1212:15 pmIAD - JFK
Nonstop1h 24mDelta
Deal found 1/30$117
This Delta deal was found by Cheapflights users on 1/30. 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.
mar. 3/119:32 amEWR - IAD
1 stop6h 51mDelta
mié. 3/126:00 amIAD - EWR
1 stop6h 07mDelta
Deal found 1/30$137
This Booking.com deal was found by Cheapflights users on 1/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/411:55 amPIT - IAD
1 stop4h 20mSouthern / Mokulele
jue. 2/65:40 pmIAD - PIT
1 stop3h 49mSouthern / Mokulele
Deal found 1/29$171
This United Airlines deal was found by Cheapflights users on 1/29. 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.
mié. 2/269:44 pmEWR - IAD
Nonstop1h 20mUnited Airlines
mié. 3/58:35 amIAD - EWR
Nonstop1h 25mUnited Airlines
Deal found 1/29$177
This United Airlines deal was found by Cheapflights users on 1/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/266:00 amAVP - IAD
Nonstop1h 15mUnited Airlines
mié. 3/512:55 pmIAD - AVP
Nonstop1h 06mUnited Airlines
Deal found 1/28$179
This United Airlines deal was found by Cheapflights users on 1/30. 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.
mar. 3/1810:35 amPHL - IAD
Nonstop1h 07mUnited Airlines
mar. 3/258:40 amIAD - PHL
Nonstop1h 11mUnited Airlines
Deal found 1/30$179
This Kissandfly.com deal was found by Cheapflights users on 1/29. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/286:00 amLGA - IAD
Nonstop1h 26mMultiple Airlines
dom. 3/27:03 pmIAD - LGA
1 stop12h 27mMultiple Airlines
Deal found 1/29$207
This Mytrip deal was found by Cheapflights users on 1/30. 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.
jue. 2/66:38 pmEWR - IAD
2 stops16h 48mMultiple Airlines
lun. 2/108:25 amIAD - EWR
2 stops14h 18mMultiple Airlines
Deal found 1/30$208

Find flights from Pennsylvania to Dulles Intl within your budget

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 enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

jue. 2/27

11:01 am-6:17 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

jue. 3/6

10:25 pm-10:15 am

1 stop11h 50m

$106

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

sáb. 3/8

6:00 am-7:26 am

Nonstop1h 26m

Washington, D.C. Dulles Intl

mié. 3/12

8:22 am-9:45 am

Nonstop1h 23m

$117

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

mié. 3/26

6:00 am-7:17 am

Nonstop1h 17m

Washington, D.C. Dulles Intl

sáb. 3/29

6:00 am-7:11 am

Nonstop1h 11m

$117

New YorkWashington, D.C.

LGA - IAD

LGAIAD

New York LaGuardia

mié. 2/26

5:59 pm-5:03 pm

1 stop23h 04m

Washington, D.C. Dulles Intl

mié. 3/5

3:53 pm-10:09 pm

1 stop6h 16m

$120

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

vie. 2/28

10:10 pm-8:44 am

1 stop10h 34m

Washington, D.C. Dulles Intl

mié. 3/5

3:53 pm-9:10 pm

1 stop5h 17m

$120

New YorkWashington, D.C.

JFK - IAD

JFKIAD

New York John F Kennedy Intl

sáb. 3/1

9:55 am-11:22 am

Nonstop1h 27m

Washington, D.C. Dulles Intl

mié. 3/5

12:05 pm-1:26 pm

Nonstop1h 21m

$127

NewarkWashington, D.C.

EWR - IAD

EWRIAD

Newark

sáb. 3/1

5:50 pm-11:13 pm

1 stop5h 23m

Washington, D.C. Dulles Intl

mié. 3/12

6:00 am-12:07 pm

1 stop6h 07m

$147

PittsburghWashington, D.C.

PIT - IAD

PITIAD

Pittsburgh

mié. 3/12

6:25 am-7:35 am

Nonstop1h 10m

Washington, D.C. Dulles Intl

mié. 3/19

1:05 pm-2:11 pm

Nonstop1h 06m

$179

ScrantonWashington, D.C.

AVP - IAD

AVPIAD

Wilkes-Barre Scranton

mié. 2/26

6:00 am-7:15 am

Nonstop1h 15m

Washington, D.C. Dulles Intl

mié. 3/5

12:55 pm-2:01 pm

Nonstop1h 06m

$179

PhiladelphiaWashington, D.C.

PHL - IAD

PHLIAD

Philadelphia

mar. 3/18

10:35 am-11:42 am

Nonstop1h 07m

Washington, D.C. Dulles Intl

mar. 3/25

8:40 am-9:51 am

Nonstop1h 11m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

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.

Travel insights for flights from Pennsylvania to Dulles Intl

Get recent, data-driven insights about flights from Pennsylvania to Dulles Intl including ideal travel times, pricing trends, and more.

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 $389). 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 enero 30, 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 enero 30, 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).

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 enero 30, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and Qatar Airways 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.
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,688 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,454 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Qatar Airways
7.5
Good
3,718 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,913 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,688 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Food

7.1

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 Frontier from $53 and United Airlines from $59 one-way.

  • 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 LaGuardia - Washington, D.C. Dulles Intl or New York John F Kennedy Intl - 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: Mesa Airlines (93%), Brussels Airlines (87%), Avianca (85%).

  • 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 $1,455, our data shows the cheapest flight currently is $145. When looking at the most popular route, (Newark - Washington, D.C. Dulles Intl), you can expect to pay $117 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 $389). 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
Fairfax
Arlington
Alexandria
Springfield
Silver Spring
Rockville
Tysons
Gaithersburg
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Sterling
Easton
Oxon Hill
Herndon
Woodbridge
Bowie
Reston
National Harbor

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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 Reagan-National flights
Los Angeles to Dulles Intl flights
Dallas/Fort Worth to Reagan-National flights
Boston to Dulles Intl flights
Atlanta to Dulles Intl flights
Los Angeles to Baltimore flights
Boston to Reagan-National flights
San Francisco to Dulles Intl flights
Atlanta to Reagan-National flights
O'Hare Intl to Dulles Intl flights
O'Hare Intl to Reagan-National flights
San Francisco to Reagan-National flights
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Seattle to Reagan-National flights
Boston to Baltimore flights
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O'Hare Intl to Baltimore flights
Minneapolis to Baltimore flights
Denver to Dulles Intl flights
Minneapolis to Reagan-National flights
Atlanta to Baltimore flights
Seattle to Baltimore flights
San Francisco to Baltimore flights
Hobby to Baltimore flights
Hobby to Reagan-National flights
Orlando to Baltimore flights
Denver to Baltimore flights
Miami to Reagan-National flights
Hobby to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Austin to Dulles Intl flights
Detroit to Dulles Intl flights
Minneapolis to Dulles Intl flights
Newark to Dulles Intl flights
Tampa to Reagan-National flights
Orlando to Reagan-National flights
LaGuardia to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Newark to Reagan-National flights
Miami to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Denver to Reagan-National flights
George Bush Intcntl to Baltimore flights
John F Kennedy Intl to Reagan-National flights
Burbank to Baltimore flights
Miami to Baltimore 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 enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$98Average$258FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$99Average$125FlexibilityNo cancel feeOn-timeN/A
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