How does KAYAK find such low prices on flights from Pennsylvania to Washington Dulles Airport?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to Washington Dulles Airport.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to Washington Dulles Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Pennsylvania to Washington Dulles Airport?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Pennsylvania with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to Washington Dulles Airport?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$40 CHEAP FLIGHTS from Pennsylvania to Washington Dulles (IAD)

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Flight Deals

Cheap Flights from Pennsylvania to Dulles Intl

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Pennsylvania to Dulles Intl

Tue, Oct 20 - Tue, Oct 27

8:30 am - 5:13 pmPHL Philadelphia-IAD Washington, D.C. Dulles Intl

8h 43m1 stop Atlanta Hartsfield-Jackson

9:06 pm - 7:21 amIAD Washington, D.C. Dulles Intl-PHL Philadelphia

10h 15m1 stop Atlanta Hartsfield-Jackson

$92Frontier

Tue, Oct 20 - Tue, Oct 27

8:30 am - 5:13 pmPHL Philadelphia-IAD Washington, D.C. Dulles Intl

8h 43m1 stop Atlanta Hartsfield-Jackson

8:05 am - 6:19 pmIAD Washington, D.C. Dulles Intl-PHL Philadelphia

10h 14m1 stop Atlanta Hartsfield-Jackson

$94Frontier

Wed, Nov 11 - Mon, Nov 16

12:36 pm - 11:43 pmPHL Philadelphia-IAD Washington, D.C. Dulles Intl

11h 07m1 stop Atlanta Hartsfield-Jackson

7:40 am - 7:21 amIAD Washington, D.C. Dulles Intl-PHL Philadelphia

23h 41m1 stop Atlanta Hartsfield-Jackson

$111Frontier

Wed, Nov 11 - Mon, Nov 16

12:36 pm - 11:43 pmPHL Philadelphia-IAD Washington, D.C. Dulles Intl

11h 07m1 stop Atlanta Hartsfield-Jackson

9:06 pm - 7:21 amIAD Washington, D.C. Dulles Intl-PHL Philadelphia

10h 15m1 stop Atlanta Hartsfield-Jackson

$114Frontier

Tue, Oct 13 - Thu, Oct 15

10:15 am - 11:38 amDUJ DuBois Jefferson County-IAD Washington, D.C. Dulles Intl

1h 23mnonstop

12:50 pm - 2:18 pmIAD Washington, D.C. Dulles Intl-DUJ DuBois Jefferson County

1h 28mnonstop

$130Southern / Mokulele

Thu, Oct 15 - Tue, Oct 27

2:50 pm - 4:13 pmDUJ DuBois Jefferson County-IAD Washington, D.C. Dulles Intl

1h 23mnonstop

8:25 am - 9:53 amIAD Washington, D.C. Dulles Intl-DUJ DuBois Jefferson County

1h 28mnonstop

$138Southern / Mokulele

Fri, Oct 23 - Sat, Oct 24

11:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

4h 18m1 stop DuBois Jefferson County

8:25 am - 2:22 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

5h 57m1 stop DuBois Jefferson County

$146Southern / Mokulele

Sat, Oct 17 - Mon, Oct 19

7:59 pm - 9:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 14mnonstop

10:20 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 10mnonstop

$174United Airlines

Fri, Oct 23 - Sat, Oct 24

10:25 am - 11:34 amPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 09mnonstop

10:20 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 10mnonstop

$174United Airlines

Fri, Oct 23 - Wed, Oct 28

6:26 am - 7:35 amPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 09mnonstop

10:22 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 08mnonstop

$174United Airlines

Recent last minute flight deals from Pennsylvania to Dulles Intl

Tue, Sep 29 - Fri, Oct 16

10:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

5h 18m1 stop DuBois Jefferson County

12:50 pm - 5:07 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

4h 17m1 stop DuBois Jefferson County

$146Southern / Mokulele

Fri, Sep 25 - Sat, Sep 26

11:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

4h 18m1 stop DuBois Jefferson County

8:25 am - 2:22 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

5h 57m1 stop DuBois Jefferson County

$147Southern / Mokulele

Thu, Sep 24 - Sat, Sep 26

11:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

4h 18m1 stop DuBois Jefferson County

8:25 am - 2:22 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

5h 57m1 stop DuBois Jefferson County

$147Southern / Mokulele

Thu, Sep 24 - Tue, Sep 29

11:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

4h 18m1 stop DuBois Jefferson County

8:25 am - 2:22 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

5h 57m1 stop DuBois Jefferson County

$148Southern / Mokulele

Tue, Sep 29 - Fri, Oct 16

10:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

5h 18m1 stop DuBois Jefferson County

6:36 pm - 7:23 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

24h 47m2 stops Blountville Tri Cities TN/VA Orlando

$256Multiple Airlines

Fri, Sep 25 - Tue, Sep 29

2:42 pm - 3:42 pmSCE State College University Park-IAD Washington, D.C. Dulles Intl

1h 00mnonstop

8:40 am - 9:47 amIAD Washington, D.C. Dulles Intl-SCE State College University Park

1h 07mnonstop

$349United Airlines

Sat, Sep 26 - Mon, Sep 28

10:30 am - 11:25 amSCE State College University Park-IAD Washington, D.C. Dulles Intl

0h 55mnonstop

8:40 am - 9:47 amIAD Washington, D.C. Dulles Intl-SCE State College University Park

1h 07mnonstop

$349United Airlines

Fri, Sep 25 - Mon, Sep 28

10:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

5h 18m1 stop DuBois Jefferson County

6:13 pm - 7:21 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

25h 08m2 stops Fort Lauderdale Greenville

$350Multiple Airlines

Thu, Sep 24 - Mon, Sep 28

10:55 am - 4:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

5h 18m1 stop DuBois Jefferson County

6:13 pm - 7:21 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

25h 08m2 stops Fort Lauderdale Greenville

$350Multiple Airlines

Fri, Sep 25 - Mon, Sep 28

7:59 pm - 9:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 14mnonstop

5:23 pm - 6:37 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 14mnonstop

$369United Airlines

Recent direct flight deals from Pennsylvania to Dulles Intl

Tue, Oct 13 - Thu, Oct 15

10:15 am - 11:38 amDUJ DuBois Jefferson County-IAD Washington, D.C. Dulles Intl

1h 23mnonstop

12:50 pm - 2:18 pmIAD Washington, D.C. Dulles Intl-DUJ DuBois Jefferson County

1h 28mnonstop

$130Southern / Mokulele

Thu, Oct 15 - Tue, Oct 27

2:50 pm - 4:13 pmDUJ DuBois Jefferson County-IAD Washington, D.C. Dulles Intl

1h 23mnonstop

8:25 am - 9:53 amIAD Washington, D.C. Dulles Intl-DUJ DuBois Jefferson County

1h 28mnonstop

$138Southern / Mokulele

Thu, Oct 8 - Mon, Oct 12

5:40 am - 7:03 amDUJ DuBois Jefferson County-IAD Washington, D.C. Dulles Intl

1h 23mnonstop

8:25 am - 9:53 amIAD Washington, D.C. Dulles Intl-DUJ DuBois Jefferson County

1h 28mnonstop

$158Southern / Mokulele

Mon, Oct 5 - Fri, Oct 9

5:47 am - 7:18 amBFD Bradford-IAD Washington, D.C. Dulles Intl

1h 31mnonstop

8:25 am - 10:03 amIAD Washington, D.C. Dulles Intl-BFD Bradford

1h 38mnonstop

$162Southern / Mokulele

Tue, Dec 29 - Tue, Jan 5

7:30 pm - 9:01 pmBFD Bradford-IAD Washington, D.C. Dulles Intl

1h 31mnonstop

1:05 pm - 2:43 pmIAD Washington, D.C. Dulles Intl-BFD Bradford

1h 38mnonstop

$168Southern / Mokulele

Thu, Oct 8 - Mon, Oct 12

5:47 am - 7:18 amBFD Bradford-IAD Washington, D.C. Dulles Intl

1h 31mnonstop

5:25 pm - 7:03 pmIAD Washington, D.C. Dulles Intl-BFD Bradford

1h 38mnonstop

$168Southern / Mokulele

Sat, Oct 17 - Mon, Oct 19

7:59 pm - 9:13 pmPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 14mnonstop

10:20 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 10mnonstop

$174United Airlines

Fri, Oct 23 - Sat, Oct 24

10:25 am - 11:34 amPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 09mnonstop

10:20 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 10mnonstop

$174United Airlines

Fri, Oct 23 - Wed, Oct 28

6:26 am - 7:35 amPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 09mnonstop

10:22 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 08mnonstop

$174United Airlines

Fri, Oct 23 - Sat, Oct 24

6:26 am - 7:35 amPIT Pittsburgh-IAD Washington, D.C. Dulles Intl

1h 09mnonstop

10:20 pm - 11:30 pmIAD Washington, D.C. Dulles Intl-PIT Pittsburgh

1h 10mnonstop

$174United Airlines

Useful Info

Low season	January
High season	October
Cheapest flight	$40

Best time to beat the crowds with an average 5% drop in price.

Most popular time to fly and prices are also 10% lower on average.

Flight from Philadelphia to Washington Dulles Airport

How does KAYAK find such low prices on flights from Pennsylvania to Washington Dulles Airport?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to Washington Dulles Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to Washington Dulles Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Pennsylvania to Washington Dulles Airport?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Pennsylvania with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to Washington Dulles Airport?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Winchester

Linthicum Heights

Hanover

Springfield

Gaithersburg

Towson

Martinsburg

Oxon Hill

Owings Mills

Charles Town

Greenbelt

Glen Burnie

Edgewood

Chesapeake Beach

Camp Springs

Ellicott City

Pikesville

Hunt Valley

Colonial Beach

Capitol Heights

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IAD

$40 Find Cheap Flights from Pennsylvania to Washington Dulles Airport - Compare and Save

Cheap Flights from Pennsylvania to Dulles Intl

Recent round-trip flight deals from Pennsylvania to Dulles Intl

Recent one-way flight deals from Pennsylvania to Dulles Intl

Recent last minute flight deals from Pennsylvania to Dulles Intl

Recent direct flight deals from Pennsylvania to Dulles Intl

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FAQs for booking Pennsylvania to Washington Dulles Airport flights

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