What are the cheapest airlines to fly from Westchester County to Washington, D.C. Dulles Intl Airport one-way?

$228 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Breeze Airways and American Airlines, with prices starting from $273 and $288, respectively.

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

Currently, July is the cheapest month in which you can book a flight from Westchester County to Washington, D.C. Dulles Intl Airport (average of $306). 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 188% 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 $308 1-2 weeks out and tickets from $451 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 29%.

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.

$228+ 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	$343 (American Airlines)
One-way from	$228 (Delta)
Popular in	December
Cheapest in	April
Average price	$229

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

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($50 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 31, 2025.

Sat 10/186:59 pmHPN - IAD

1 stop4h 51mAmerican Airlines

Tue 10/288:09 amIAD - HPN

1 stop4h 51mAmerican Airlines

Deal found 7/30

$343

Sat 12/134:19 pmHPN - IAD

1 stop16h 52mDelta

Tue 12/165:25 pmIAD - HPN

2 stops18h 21mDelta

Deal found 7/30

$420

Wed 8/207:40 pmHPN - IAD

1 stop18h 19mMultiple Airlines

Thu 8/214:56 pmIAD - HPN

3 stops18h 25mMultiple Airlines

Deal found 7/31

$566

Wed 8/67:40 pmHPN - IAD

1 stop18h 19mBreeze Airways

Sun 8/108:25 amIAD - HPN

1 stop10h 35mBreeze Airways

Deal found 7/31

$662

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 July 31, 2025.

Sat 10/186:59 pmHPN - IAD

1 stop4h 51mAmerican Airlines

Tue 10/288:09 amIAD - HPN

1 stop4h 51mAmerican Airlines

Deal found 7/30

$343

Sat 12/134:19 pmHPN - IAD

1 stop16h 52mDelta

Tue 12/165:25 pmIAD - HPN

2 stops18h 21mDelta

Deal found 7/30

$420

Wed 8/207:40 pmHPN - IAD

1 stop18h 19mMultiple Airlines

Thu 8/214:56 pmIAD - HPN

3 stops18h 25mMultiple Airlines

Deal found 7/31

$566

Last-minute flights from Westchester County to Dulles Intl
Discover last-minute flight deals from Westchester County to Dulles Intl. Data last updated July 31, 2025 and is based on user searches.

Tue 8/51:29 pmHPN - IAD

3 stops26h 46mMultiple Airlines

Thu 8/78:25 amIAD - HPN

1 stop10h 35mMultiple Airlines

Deal found 7/30

$844

Wed 8/67:40 pmHPN - IAD

1 stop18h 19mBreeze Airways

Sun 8/108:25 amIAD - HPN

1 stop10h 35mBreeze Airways

Deal found 7/31

$662

Sat 8/96:59 pmHPN - IAD

1 stop4h 58mAmerican Airlines

Sun 8/106:34 amIAD - HPN

1 stop6h 31mAmerican Airlines

Deal found 7/30

$498

Wed 8/207:40 pmHPN - IAD

1 stop18h 19mMultiple Airlines

Thu 8/214:56 pmIAD - HPN

3 stops18h 25mMultiple Airlines

Deal found 7/31

$566

Sat 8/301:35 pmHPN - IAD

1 stop6h 07mAmerican Airlines

Mon 9/11:18 pmIAD - HPN

1 stop7h 11mAmerican Airlines

Deal found 7/29

$363

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 July 31, 2025.

Fri 8/225:15 pmHPN - IAD

1 stop24h 19mDelta

Deal found 7/31

$228

Sun 8/318:10 amHPN - IAD

3 stops27h 13mMultiple Airlines

Deal found 7/31

$254

Wed 9/177:40 pmHPN - IAD

1 stop24h 15mBreeze Airways

Deal found 7/30

$273

Thu 9/1810:05 amHPN - IAD

1 stop48h 02mAmerican Airlines

Deal found 7/30

$288

Sat 8/3012:00 pmHPN - IAD

2 stops51h 40mQatar Airways

Deal found 7/31

$1,268

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

Sat 10/18

6:59 pm-11:50 pm

1 stop4h 51m

Washington, D.C. Dulles Intl

Tue 10/28

8:09 am-1:00 pm

1 stop4h 51m

$343

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 12/13

4:19 pm-9:11 am

1 stop16h 52m

Washington, D.C. Dulles Intl

Tue 12/16

5:25 pm-11:46 am

2 stops18h 21m

$420

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Wed 8/20

7:40 pm-1:59 pm

1 stop18h 19m

Washington, D.C. Dulles Intl

Thu 8/21

4:56 pm-11:21 am

3 stops18h 25m

$566

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Fri 8/22

5:15 pm-5:34 pm

1 stop24h 19m

$228

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sun 8/31

8:10 am-11:23 am

3 stops27h 13m

$254

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Wed 9/17

7:40 pm-7:55 pm

1 stop24h 15m

$273

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Thu 9/18

10:05 am-10:07 am

1 stop48h 02m

$288

White PlainsWashington, D.C.

HPN - IAD

HPNIAD

White Plains Westchester County

Sat 8/30

12:00 pm-3:40 pm

2 stops51h 40m

$1,268

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, Breeze Airways, and Qatar Airways from Westchester County to Washington, D.C. Dulles Intl Airport. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kymberlee,Oct 2024

JFK - ATL

Breeze Airways

8.0

Very good

191 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kymberlee,Oct 2024

JFK - ATL

Qatar Airways

7.4

Good

3,609 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kymberlee,Oct 2024

JFK - ATL

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kymberlee,Oct 2024

JFK - ATL

Related info for your journey

What are the cheapest airlines to fly from Westchester County to Washington, D.C. Dulles Intl Airport one-way?
$228 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Breeze Airways and American Airlines, with prices starting from $273 and $288, respectively.
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, July is the cheapest month in which you can book a flight from Westchester County to Washington, D.C. Dulles Intl Airport (average of $306). 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.

See more FAQs

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National Harbor

Dundalk

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$228+ 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 8/22. 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

1. Tell us where you want to go

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 July 31, 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 July 31, 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 July 31, 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

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, Breeze Airways, and Qatar Airways from Westchester County to Washington, D.C. Dulles Intl Airport. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines to fly from Westchester County to Washington, D.C. Dulles Intl Airport one-way?

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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Westchester County to Dulles Intl

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

100% Free

Book with Flexibility

Travel Smart

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 July 31, 2025.