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).

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

When flying from New Windsor 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.

Most accurate provider : When it comes to deals on New Windsor-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Windsor-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Windsor-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on New Windsor-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New Windsor-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from New Windsor to Washington, D.C. Dulles Intl?

For a flight from New Windsor to Washington, D.C. Dulles Intl, you will be flying from Stewart. New Windsor Stewart (SWF) is just 4.3 mi from the center of the city. Stewart is the only New Windsor airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from New Windsor Stewart on a regular basis.

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

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

How can I find direct flights from Stewart to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Stewart 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.

$155+ Flights from New Windsor to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Stewart to Dulles Intl

Cheapest flights from Stewart to Dulles Intl
Explore the most affordable flight options available from Stewart to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

Thu 3/510:09 am

SWF

IAD

2 stops21h 15m

Multiple Airlines

Mon 3/99:12 am

IAD

SWF

1 stop9h 34m

Multiple Airlines

Deal found 1/24

$332

Best flights from Stewart to Dulles Intl
Discover carefully curated flight deals from Stewart to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 26, 2026.

Thu 3/510:09 am

SWF

IAD

2 stops21h 15m

Multiple Airlines

Mon 3/99:12 am

IAD

SWF

1 stop9h 34m

Multiple Airlines

Deal found 1/24

$332

One-way flights from Stewart to Dulles Intl
Search for one-way flight options from Stewart to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated January 26, 2026.

Fri 3/2012:11 pm

SWF

IAD

2 stops19h 13m

Multiple Airlines

Deal found 1/23

$155

Thu 3/1211:48 am

SWF

IAD

1 stop19h 36m

Multiple Airlines

Deal found 1/23

$170

Sun 3/17:22 pm

SWF

IAD

2 stops15h 18m

Multiple Airlines

Deal found 1/25

$172

Mon 3/911:02 am

SWF

IAD

2 stops13h 29m

Multiple Airlines

Deal found 1/25

$178

Sun 2/811:48 am

SWF

IAD

1 stop24h 48m

Multiple Airlines

Deal found 1/26

$191

Thu 3/1211:48 am

SWF

IAD

2 stops26h 30m

Breeze Airways

Deal found 1/23

$202

Thu 4/28:12 pm

SWF

IAD

1 stop11h 32m

Multiple Airlines

Deal found 1/25

$205

Thu 6/189:38 am

SWF

IAD

2 stops28h 34m

Breeze Airways

Deal found 1/25

$255

Sun 6/288:04 pm

SWF

IAD

2 stops18h 08m

Multiple Airlines

Deal found 1/25

$367

Find flight deals from Stewart to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$332 (Kiwi.com)
One-way from	$155 (Kiwi.com)
Popular in	January
Cheapest in	April
Average price	$283

Provider with most accurate pricing for New Windsor Stewart-Washington, D.C. Dulles Intl flight deals.

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Provider most trusted by Cheapflights users for New Windsor Stewart-Washington, D.C. Dulles Intl flights.

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From New Windsor Stewart to Washington, D.C. Dulles Intl

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One-way flight from New Windsor Stewart to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 16% potential increase in price ($38 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 January 2026

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Thu 3/5

10:09 am-7:24 am

2 stops21h 15m

Washington, D.C. Dulles Intl

Mon 3/9

9:12 am-6:46 pm

1 stop9h 34m

$332

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Fri 3/20

12:11 pm-7:24 am

2 stops19h 13m

$155

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Thu 3/12

11:48 am-7:24 am

1 stop19h 36m

$170

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Sun 3/1

7:22 pm-10:40 am

2 stops15h 18m

$172

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Mon 3/9

11:02 am-12:31 am

2 stops13h 29m

$178

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Sun 2/8

11:48 am-12:36 pm

1 stop24h 48m

$191

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Thu 3/12

11:48 am-2:18 pm

2 stops26h 30m

$202

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Thu 4/2

8:12 pm-7:44 am

1 stop11h 32m

$205

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Thu 6/18

9:38 am-2:12 pm

2 stops28h 34m

$255

New WindsorWashington, D.C.

SWF - IAD

SWFIAD

New Windsor Stewart

Sun 6/28

8:04 pm-2:12 pm

2 stops18h 08m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Most accurate provider: When it comes to deals on New Windsor-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Windsor-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Windsor-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on New Windsor-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New Windsor-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Stewart to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Stewart 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 New Windsor to Washington, D.C. Dulles Intl Airport

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

Currently, March is the cheapest month in which you can book a flight from New Windsor to Washington, D.C. Dulles Intl Airport (average of $50). Flying from New Windsor to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $129). 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.

Related info for your journey

What airport do you fly from for flights from New Windsor to Washington, D.C. Dulles Intl?
For a flight from New Windsor to Washington, D.C. Dulles Intl, you will be flying from Stewart. New Windsor Stewart (SWF) is just 4.3 mi from the center of the city. Stewart is the only New Windsor airport and it handles 0 outbound flights to Washington, D.C. Dulles Intl per day. 0 airlines have flights to Washington, D.C. Dulles Intl from New Windsor Stewart on a regular basis.
Can I find deals for flights from Stewart to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Stewart to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Stewart to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Dulles Intl.
Can I find deals for business class flights from Stewart to Dulles Intl?
Yes. Cheapflights offers flight deals from Stewart 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 New Windsor to Washington, D.C. Dulles Intl Airport?
Currently, March is the cheapest month in which you can book a flight from New Windsor to Washington, D.C. Dulles Intl Airport (average of $50). Flying from New Windsor to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $129). 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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$155+ Cheap flights from New Windsor (SWF) 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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Stewart to Dulles Intl with Cheapflights

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Cheap flight deals from Stewart to Dulles Intl

Cheapest flights from Stewart to Dulles IntlExplore the most affordable flight options available from Stewart to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

Explore the most affordable flight options available from Stewart to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

Find flight deals from Stewart to Dulles Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Stewart to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Stewart with our price prediction graph.

Cheapflights Insights

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

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

Related info for your journey

Find useful and relevant information for your journey from Stewart 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 airport do you fly from for flights from New Windsor to Washington, D.C. Dulles Intl?

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

How can I find direct flights from Stewart to Dulles Intl?

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

What is the cheapest month to book a flight from New Windsor 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 Stewart to Dulles Intl
Explore the most affordable flight options available from Stewart to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.