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Dulles Intl

$137+ Cheap flights from Westchester County 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
HPN — IAD
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Westchester County to Dulles Intl

Keep the following information in mind while searching for Westchester County to Dulles Intl flight deals. Data was last updated January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$371
(American Airlines)

One-way from

$137
(Trip.com)

Popular in

January

Cheapest in

April

Average price

$281
Provider with most accurate pricing for New York (NYC)-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Washington, D.C. (WAS) flights.
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From Westchester County to Washington, D.C. Dulles Intl
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One-way flight from Westchester County to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 16% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Westchester County to Dulles Intl

Cheapest flights from Westchester County to Dulles Intl
Explore the most affordable flight options available from Westchester County to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This American Airlines deal was found by Cheapflights users on 1/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/171:37 pm
HPN
-
IAD
1 stop6h 53m
American Airlines
Sat 2/215:00 am
IAD
-
HPN
1 stop4h 29m
American Airlines
Deal found 1/12$371
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/201:37 pm
HPN
-
IAD
1 stop6h 53m
American Airlines
Sat 2/215:00 am
IAD
-
HPN
1 stop4h 29m
American Airlines
Deal found 1/14$400
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/3111:00 am
HPN
-
IAD
1 stop6h 16m
American Airlines
Tue 2/311:34 am
IAD
-
HPN
1 stop5h 11m
American Airlines
Deal found 1/14$423
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:57 pm
HPN
-
IAD
1 stop5h 02m
American Airlines
Sat 4/186:26 am
IAD
-
HPN
1 stop6h 34m
American Airlines
Deal found 1/13$426
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2710:05 am
HPN
-
IAD
1 stop6h 11m
American Airlines
Mon 3/24:46 pm
IAD
-
HPN
1 stop6h 13m
American Airlines
Deal found 1/13$429
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/141:37 pm
HPN
-
IAD
1 stop6h 53m
American Airlines
Sat 2/215:00 am
IAD
-
HPN
1 stop4h 29m
American Airlines
Deal found 1/15$464
This KAYAK deal was found by Cheapflights users on 1/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:40 pm
HPN
-
IAD
1 stop5h 02m
American Airlines
Tue 1/275:46 pm
IAD
-
HPN
1 stop4h 09m
American Airlines
Deal found 1/12$466
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/137:47 am
HPN
-
IAD
1 stop5h 45m
American Airlines
Sun 3/155:00 am
IAD
-
HPN
1 stop4h 29m
American Airlines
Deal found 1/14$479
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/177:30 am
HPN
-
IAD
1 stop5h 06m
American Airlines
Sun 1/185:46 pm
IAD
-
HPN
1 stop4h 09m
American Airlines
Deal found 1/14$484
This American Airlines deal was found by Cheapflights users on 1/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/167:30 am
HPN
-
IAD
1 stop5h 06m
American Airlines
Mon 1/197:01 am
IAD
-
HPN
1 stop5h 59m
American Airlines
Deal found 1/13$485
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:47 am
HPN
-
IAD
1 stop7h 04m
American Airlines
Sun 5/33:26 pm
IAD
-
HPN
1 stop7h 34m
American Airlines
Deal found 1/14$499
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/131:37 pm
HPN
-
IAD
1 stop6h 53m
American Airlines
Fri 2/205:00 am
IAD
-
HPN
1 stop4h 29m
American Airlines
Deal found 1/14$506

Cheapflights Fare Finder

 
Customize your flight search to find flights from Westchester County 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 January 15, 2026.
Use the filters below to find and compare flights from Westchester County to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Westchester County

Fly to

Dulles Intl

Route

Depart

Return

Price

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 2/20

1:37 pm-8:30 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Sat 2/21

5:00 am-9:29 am

1 stop4h 29m

$400

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 2/21

10:05 am-4:16 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Sun 2/22

5:00 am-9:29 am

1 stop4h 29m

$400

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 1/31

11:00 am-5:16 pm

1 stop6h 16m

Washington, D.C. Dulles Intl

Tue 2/3

11:34 am-4:45 pm

1 stop5h 11m

$423

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Thu 4/16

6:57 pm-11:59 pm

1 stop5h 02m

Washington, D.C. Dulles Intl

Sat 4/18

6:26 am-1:00 pm

1 stop6h 34m

$426

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 2/27

10:05 am-4:16 pm

1 stop6h 11m

Washington, D.C. Dulles Intl

Mon 3/2

4:46 pm-10:59 pm

1 stop6h 13m

$429

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 2/14

1:37 pm-8:30 pm

1 stop6h 53m

Washington, D.C. Dulles Intl

Sat 2/21

5:00 am-9:29 am

1 stop4h 29m

$464

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 3/13

7:47 am-1:32 pm

1 stop5h 45m

Washington, D.C. Dulles Intl

Sun 3/15

5:00 am-9:29 am

1 stop4h 29m

$479

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 1/31

11:00 am-5:16 pm

1 stop6h 16m

Washington, D.C. Dulles Intl

Mon 2/2

5:46 pm-9:55 pm

1 stop4h 09m

$484

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 2/7

11:00 am-5:16 pm

1 stop6h 16m

Washington, D.C. Dulles Intl

Mon 2/9

7:01 am-1:00 pm

1 stop5h 59m

$484

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 1/31

11:00 am-5:16 pm

1 stop6h 16m

Washington, D.C. Dulles Intl

Sun 2/1

11:34 am-4:45 pm

1 stop5h 11m

$484

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 19 results
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Best time to book a flight from Westchester County to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Westchester County 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 Westchester County to Washington, D.C. Dulles Intl Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Westchester County 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 Westchester County to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Westchester County to Washington, D.C. Dulles Intl Airport in 6h 53m. Fly via American Airlines to get the fastest option. The distance from Westchester County to Washington, D.C. Dulles Intl Airport is about 246 mi.

  • Can I find deals for flights from Westchester County to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Westchester County to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Westchester County to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Westchester County to Dulles Intl.

  • Can I find deals for business class flights from Westchester County to Dulles Intl?

    Yes. Cheapflights offers flight deals from Westchester County 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.

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
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Westchester County to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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