What is the cheapest month to book a flight from Westchester County to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Westchester County to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Westchester County to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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.

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).

How far in advance should I book a flight from Westchester County to Washington, D.C. Dulles Intl Airport?

To save up to 283% on this flight, we recommend booking at least 27 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Westchester County to Washington, D.C. Dulles Intl Airport from $279 1-2 weeks out and tickets from $443 for flights departing within the next 72 hours.

What is the cheapest month to fly from Westchester County to Washington, D.C. Dulles Intl Airport?

The best pricing can be found in the month of April. Prices to Washington, D.C. Dulles Intl Airport from Westchester County average $229. You can even find prices in April for less than $229, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $91. The month of December appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Westchester County. Flying in the targeted month can save you up to 32%.

What is the cheapest time of day to fly from REU to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Westchester County to Washington, D.C. Dulles Intl Airport as you normally would.

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.

$142+ Flights from Westchester County to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Westchester County to Dulles Intl

Round-trip from	$310 (Kiwi.com)
One-way from	$142 (Kiwi.com)
Popular in	December
Cheapest in	April
Average price	$232

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. 19% potential increase in price ($53 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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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 September 15, 2025.

Fri 10/3112:10 pmHPN - IAD

2 stops11h 19mMultiple Airlines

Sun 11/28:13 pmIAD - HPN

1 stop16h 27mMultiple Airlines

Deal found 9/14

$310

Mon 11/312:10 pmHPN - IAD

2 stops7h 41mMultiple Airlines

Thu 11/68:22 pmIAD - HPN

1 stop16h 18mMultiple Airlines

Deal found 9/15

$332

Thu 10/28:00 amHPN - IAD

2 stops15h 39mMultiple Airlines

Sun 10/52:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$338

Wed 10/151:30 pmHPN - IAD

1 stop5h 24mAmerican Airlines

Sat 10/189:19 amIAD - HPN

1 stop7h 40mAmerican Airlines

Deal found 9/13

$343

Sat 11/86:49 pmHPN - IAD

1 stop5h 10mAmerican Airlines

Mon 11/105:29 pmIAD - HPN

1 stop5h 01mAmerican Airlines

Deal found 9/13

$363

Sat 10/186:59 pmHPN - IAD

1 stop4h 54mAmerican Airlines

Sun 10/195:06 amIAD - HPN

1 stop4h 23mAmerican Airlines

Deal found 9/14

$365

Fri 11/147:59 amHPN - IAD

1 stop5h 36mAmerican Airlines

Mon 11/177:59 amIAD - HPN

1 stop5h 01mAmerican Airlines

Deal found 9/13

$383

Sat 10/116:59 pmHPN - IAD

1 stop4h 54mAmerican Airlines

Sat 10/186:34 amIAD - HPN

1 stop6h 31mAmerican Airlines

Deal found 9/13

$393

Fri 9/268:25 amHPN - IAD

2 stops11h 44mMultiple Airlines

Sun 9/282:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$413

Sat 10/117:40 pmHPN - IAD

1 stop24h 15mMultiple Airlines

Sat 10/189:38 pmIAD - HPN

2 stops37h 50mMultiple Airlines

Deal found 9/13

$418

Best flights from Westchester County to Dulles Intl
Discover carefully curated flight deals from Westchester County to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Mon 11/312:10 pmHPN - IAD

2 stops7h 41mMultiple Airlines

Thu 11/68:22 pmIAD - HPN

1 stop16h 18mMultiple Airlines

Deal found 9/15

$332

Wed 10/151:30 pmHPN - IAD

1 stop5h 24mAmerican Airlines

Sat 10/186:34 amIAD - HPN

1 stop6h 31mAmerican Airlines

Deal found 9/14

$343

Sat 12/136:00 amHPN - IAD

1 stop17h 17mDelta

Tue 12/163:38 pmIAD - HPN

1 stop18h 06mDelta

Deal found 9/12

$343

Thu 10/28:00 amHPN - IAD

2 stops15h 39mMultiple Airlines

Sun 10/52:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$338

Sat 11/86:49 pmHPN - IAD

1 stop5h 10mAmerican Airlines

Mon 11/105:29 pmIAD - HPN

1 stop5h 01mAmerican Airlines

Deal found 9/15

$363

Sun 9/288:00 amHPN - IAD

2 stops16h 15mMultiple Airlines

Thu 10/28:13 pmIAD - HPN

1 stop16h 27mMultiple Airlines

Deal found 9/13

$343

Sat 11/11:35 pmHPN - IAD

1 stop6h 10mAmerican Airlines

Mon 11/37:59 amIAD - HPN

1 stop5h 01mAmerican Airlines

Deal found 9/15

$363

Fri 11/147:59 amHPN - IAD

1 stop5h 36mAmerican Airlines

Mon 11/177:59 amIAD - HPN

1 stop5h 01mAmerican Airlines

Deal found 9/13

$383

Fri 9/268:25 amHPN - IAD

2 stops11h 44mMultiple Airlines

Sun 9/282:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$413

Last-minute flights from Westchester County to Dulles Intl
Discover last-minute flight deals from Westchester County to Dulles Intl. Data last updated September 15, 2025 and is based on user searches.

Tue 9/167:42 amHPN - IAD

1 stop6h 09mAmerican Airlines

Tue 9/2311:18 amIAD - HPN

1 stop5h 41mAmerican Airlines

Deal found 9/15

$443

Fri 9/268:25 amHPN - IAD

2 stops11h 44mMultiple Airlines

Sun 9/282:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$413

Thu 10/28:00 amHPN - IAD

2 stops15h 39mMultiple Airlines

Sun 10/52:10 pmIAD - HPN

1 stop28h 50mMultiple Airlines

Deal found 9/13

$338

Sat 10/116:59 pmHPN - IAD

1 stop4h 54mAmerican Airlines

Sat 10/186:34 amIAD - HPN

1 stop6h 31mAmerican Airlines

Deal found 9/13

$393

Sat 10/117:40 pmHPN - IAD

1 stop24h 15mMultiple Airlines

Sat 10/189:38 pmIAD - HPN

2 stops37h 50mMultiple Airlines

Deal found 9/13

$418

Tue 10/147:45 amHPN - IAD

1 stop6h 03mAmerican Airlines

Tue 10/2110:25 amIAD - HPN

1 stop6h 34mAmerican Airlines

Deal found 9/15

$455

Wed 10/151:30 pmHPN - IAD

1 stop5h 24mAmerican Airlines

Sat 10/189:19 amIAD - HPN

1 stop7h 40mAmerican Airlines

Deal found 9/13

$343

Sat 10/186:59 pmHPN - IAD

1 stop4h 54mAmerican Airlines

Sun 10/195:06 amIAD - HPN

1 stop4h 23mAmerican Airlines

Deal found 9/14

$365

Fri 10/3112:10 pmHPN - IAD

2 stops11h 19mMultiple Airlines

Sun 11/28:13 pmIAD - HPN

1 stop16h 27mMultiple Airlines

Deal found 9/14

$310

One-way flights from Westchester County to Dulles Intl
Search for one-way flight options from Westchester County to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Wed 12/101:14 pmHPN - IAD

2 stops23h 35mMultiple Airlines

Deal found 9/14

$142

Wed 10/81:14 pmHPN - IAD

2 stops23h 08mMultiple Airlines

Deal found 9/15

$148

Wed 10/157:40 pmHPN - IAD

1 stop24h 15mBreeze Airways

Deal found 9/15

$168

Sat 10/117:40 pmHPN - IAD

1 stop24h 15mBreeze Airways

Deal found 9/12

$171

Sat 9/271:29 pmHPN - IAD

2 stops31h 50mMultiple Airlines

Deal found 9/13

$172

Sat 9/207:40 pmHPN - IAD

1 stop24h 15mBreeze Airways

Deal found 9/13

$173

Sun 9/288:00 amHPN - IAD

3 stops30h 25mMultiple Airlines

Deal found 9/13

$175

Sat 9/277:40 pmHPN - IAD

1 stop24h 15mBreeze Airways

Deal found 9/13

$176

Thu 10/308:00 amHPN - IAD

2 stops15h 29mMultiple Airlines

Deal found 9/15

$184

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Mon 11/3

12:10 pm-7:51 pm

2 stops7h 41m

Washington, D.C. Dulles Intl

Thu 11/6

8:22 pm-12:40 pm

1 stop16h 18m

$332

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Thu 10/2

8:00 am-11:39 pm

2 stops15h 39m

Washington, D.C. Dulles Intl

Sun 10/5

2:10 pm-7:00 pm

1 stop28h 50m

$338

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Wed 10/15

1:30 pm-6:54 pm

1 stop5h 24m

Washington, D.C. Dulles Intl

Sat 10/18

6:34 am-1:05 pm

1 stop6h 31m

$343

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 12/13

6:00 am-11:17 pm

1 stop17h 17m

Washington, D.C. Dulles Intl

Tue 12/16

3:38 pm-9:44 am

1 stop18h 06m

$343

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sun 9/28

8:00 am-12:15 am

2 stops16h 15m

Washington, D.C. Dulles Intl

Thu 10/2

8:13 pm-12:40 pm

1 stop16h 27m

$343

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 11/8

6:49 pm-11:59 pm

1 stop5h 10m

Washington, D.C. Dulles Intl

Mon 11/10

5:29 pm-10:30 pm

1 stop5h 01m

$363

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 11/1

1:35 pm-7:45 pm

1 stop6h 10m

Washington, D.C. Dulles Intl

Mon 11/3

7:59 am-1:00 pm

1 stop5h 01m

$363

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 11/14

7:59 am-1:35 pm

1 stop5h 36m

Washington, D.C. Dulles Intl

Mon 11/17

7:59 am-1:00 pm

1 stop5h 01m

$383

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 9/26

8:25 am-8:09 pm

2 stops11h 44m

Washington, D.C. Dulles Intl

Sun 9/28

2:10 pm-7:00 pm

1 stop28h 50m

$413

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Wed 10/8

1:14 pm-12:22 pm

2 stops23h 08m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results

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

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 5h 24m. Fly via American Airlines or Delta to get the fastest option. The distance from Westchester County to Washington, D.C. Dulles Intl Airport is about 246 mi. This flight may include one or multiple stops.
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.
What is the cheapest month to book a flight from Westchester County to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Westchester County to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Westchester County to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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$142+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Westchester County to Dulles Intl with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

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 September 15, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Westchester County to Dulles Intl

Cheapest flights from Westchester County to Dulles IntlExplore 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 September 15, 2025.

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 September 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Westchester County to Washington, D.C. Dulles Intl Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Westchester County to Washington, D.C. Dulles Intl Airport

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?

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

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

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

What is the cheapest month to book a flight from Westchester County to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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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 September 15, 2025.