How long is the flight from Islip, New York to Washington, D.C.?

There are many flights that can get you from Islip, New York to Washington, D.C. in 1h 15m. Fly via Southwest or JetBlue to get the fastest option. The distance between Islip, New York and Washington, D.C. is about 219 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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).

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

Most trusted provider : When it comes to deals on Islip, New York-Washington, D.C. 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 Islip, New York-Washington, D.C. 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 Islip to Washington, D.C.?

Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Washington, D.C. from Islip. Booking flights from Long Island (ISP) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 1 airline.

Can I find deals for flights from Islip to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Islip to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Islip to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Washington, D.C..

Can I find deals for business class flights from Islip to Washington, D.C.?

Yes. Cheapflights offers flight deals from Islip to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$82+ Cheap Flights from Islip, NY to Washington, D.C.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Islip to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Islip to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Islip to Washington, D.C.
Explore the most affordable flight options available from Islip to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.

Wed 11/1112:30 pm -

Nonstop1h 15m

Wed 11/1810:40 am -

Nonstop1h 05m

Deal found 8/19

$163

Thu 9/104:05 pm -

Nonstop1h 15m

Fri 9/118:55 pm -

Nonstop1h 15m

Deal found 8/18

$184

Fri 9/114:05 pm -

Nonstop1h 15m

Fri 9/118:55 pm -

Nonstop1h 15m

Deal found 8/19

$205

Fri 9/1812:35 pm -

Nonstop1h 15m

Thu 9/248:25 am -

Nonstop1h 15m

Deal found 8/19

$226

Tue 9/155:43 pm -

1 stop14h 48m

Tue 9/223:10 pm -

2 stops20h 10m

Deal found 8/18

$243

Fri 10/93:10 pm -

Nonstop1h 15m

Mon 10/121:20 pm -

Nonstop1h 10m

Deal found 8/18

$247

Tue 9/155:43 pm -

1 stop14h 48m

Tue 9/223:10 pm -

1 stop25h 48m

Deal found 8/18

$248

Thu 10/13:10 pm -

Nonstop1h 15m

Fri 10/210:25 pm -

Nonstop1h 10m

Deal found 8/20

$254

Sun 10/185:40 am -

Nonstop1h 15m

Sat 10/243:00 pm -

Nonstop1h 10m

Deal found 8/19

$261

Wed 9/1612:00 pm -

2 stops26h 07m

Wed 9/239:27 am -

1 stop7h 31m

Deal found 8/17

$262

Sat 9/1212:00 pm -

2 stops45h 25m

Tue 9/229:27 am -

1 stop7h 31m

Deal found 8/20

$270

Sat 10/103:50 pm -

Nonstop1h 15m

Mon 10/121:20 pm -

Nonstop1h 10m

Deal found 8/19

$277

Best flights from Islip to Washington, D.C.
Discover carefully curated flight deals from Islip to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.

Thu 9/104:05 pm -

Nonstop1h 15m

Mon 9/148:25 am -

Nonstop1h 15m

Deal found 8/18

$163

Wed 11/114:05 pm -

Nonstop1h 20m

Sat 11/141:45 pm -

Nonstop1h 10m

Deal found 8/21

$163

Fri 9/117:00 am -

1 stop7h 58m

Sat 9/124:35 pm -

1 stop6h 47m

Deal found 8/20

$329

Sat 9/510:57 am -

1 stop10h 43m

Wed 9/99:25 pm -

2 stops19h 33m

Deal found 8/21

$339

Tue 9/1510:55 am -

Nonstop1h 20m

Tue 9/229:05 am -

Nonstop1h 10m

Deal found 8/18

$163

Tue 11/34:05 pm -

Nonstop1h 20m

Sat 11/71:45 pm -

Nonstop1h 10m

Deal found 8/21

$184

Fri 9/114:05 pm -

Nonstop1h 15m

Fri 9/118:55 pm -

Nonstop1h 15m

Deal found 8/19

$205

Tue 9/86:00 am -

1 stop8h 53m

Thu 9/104:00 pm -

1 stop7h 22m

Deal found 8/17

$351

Sat 10/103:50 pm -

Nonstop1h 15m

Mon 10/121:20 pm -

Nonstop1h 10m

Deal found 8/19

$277

Tue 9/154:26 pm -

1 stop22h 31m

Tue 9/224:35 pm -

1 stop6h 47m

Deal found 8/17

$384

Tue 9/84:58 pm -

1 stop6h 35m

Thu 9/104:35 pm -

1 stop6h 47m

Deal found 8/17

$393

Fri 9/1112:35 pm -

Nonstop1h 15m

Sun 9/138:40 am -

Nonstop1h 15m

Deal found 8/20

$298

Fri 10/25:40 pm -

Nonstop1h 15m

Sun 10/410:25 pm -

Nonstop1h 10m

Deal found 8/17

$298

Wed 9/164:26 pm -

2 stops15h 20m

Wed 9/234:35 pm -

1 stop6h 47m

Deal found 8/17

$400

Fri 9/44:05 pm -

Nonstop1h 15m

Mon 9/78:25 am -

Nonstop1h 15m

Deal found 8/17

$331

Wed 9/910:55 am -

Nonstop1h 20m

Wed 9/169:05 am -

Nonstop1h 10m

Deal found 8/21

$331

Thu 9/171:15 pm -

2 stops10h 40m

Wed 9/236:00 am -

1 stop8h 55m

Deal found 8/17

$362

Wed 10/74:20 pm -

1 stop6h 15m

Wed 10/146:00 am -

1 stop7h 10m

Deal found 8/19

$448

Sat 9/52:00 pm -

1 stop7h 55m

Wed 9/96:00 am -

1 stop8h 55m

Deal found 8/22

$459

Fri 9/181:15 pm -

2 stops10h 40m

Thu 9/2412:55 pm -

1 stop8h 40m

Deal found 8/19

$463

Fri 9/181:15 pm -

2 stops10h 40m

Sun 9/2012:55 pm -

1 stop10h 25m

Deal found 8/21

$488

Sun 9/2710:30 am -

1 stop8h 20m

Tue 9/296:40 pm -

2 stops20h 15m

Deal found 8/17

$530

Last-minute flights from Islip to Washington, D.C.
Discover last-minute flight deals from Islip to Washington, D.C.. Data last updated August 22, 2026 and is based on user searches.

Wed 9/912:00 pm -

2 stops29h 27m

Wed 9/169:27 am -

1 stop7h 31m

Deal found 8/21

$288

Thu 9/106:10 am -

Nonstop1h 15m

Thu 9/108:25 am -

Nonstop1h 15m

Deal found 8/17

$163

Thu 9/104:05 pm -

Nonstop1h 15m

Fri 9/118:55 pm -

Nonstop1h 15m

Deal found 8/18

$184

Thu 9/105:43 pm -

2 stops29h 21m

Mon 9/149:27 am -

1 stop7h 31m

Deal found 8/18

$317

Fri 9/114:05 pm -

Nonstop1h 15m

Fri 9/118:55 pm -

Nonstop1h 15m

Deal found 8/19

$205

Fri 9/1112:35 pm -

Nonstop1h 15m

Sun 9/138:40 am -

Nonstop1h 15m

Deal found 8/20

$298

Sat 9/1212:00 pm -

2 stops45h 25m

Tue 9/229:27 am -

1 stop7h 31m

Deal found 8/20

$270

Tue 9/155:43 pm -

1 stop14h 48m

Tue 9/223:10 pm -

2 stops20h 10m

Deal found 8/18

$243

Tue 9/155:43 pm -

1 stop14h 48m

Tue 9/223:10 pm -

1 stop25h 48m

Deal found 8/18

$248

Tue 9/157:00 am -

1 stop7h 58m

Tue 9/224:00 pm -

1 stop7h 22m

Deal found 8/17

$295

Wed 9/1612:00 pm -

2 stops26h 07m

Wed 9/239:27 am -

1 stop7h 31m

Deal found 8/17

$262

Fri 9/1812:35 pm -

Nonstop1h 15m

Thu 9/248:25 am -

Nonstop1h 15m

Deal found 8/19

$226

One-way flights from Islip to Washington, D.C.
Search for one-way flight options from Islip to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.

Thu 9/174:05 pm -

Nonstop1h 15m

Deal found 8/18

$82

Fri 10/165:40 pm -

Nonstop1h 15m

Deal found 8/17

$103

Tue 9/155:43 pm -

1 stop20h 28m

Deal found 8/17

$111

Tue 9/151:38 pm -

2 stops24h 33m

Deal found 8/17

$116

Wed 9/910:55 am -

Nonstop1h 20m

Deal found 8/17

$117

Tue 9/225:43 pm -

1 stop20h 28m

Deal found 8/21

$119

Wed 9/1612:00 pm -

2 stops26h 07m

Deal found 8/20

$120

Wed 9/2312:00 pm -

2 stops26h 07m

Deal found 8/19

$125

Tue 9/2212:00 pm -

2 stops20h 31m

Deal found 8/19

$128

Thu 9/177:00 am -

1 stop7h 58m

Deal found 8/18

$165

Tue 9/2210:20 am -

1 stop5h 45m

Deal found 8/19

$179

Thu 9/171:15 pm -

2 stops10h 40m

Deal found 8/18

$184

Find flight deals from Islip to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$163 (Southwest)
One-way from	$82 (Southwest)
Popular in	July
Cheapest in	December
Average price	$321
Good round-trip deal	$340 or less
Good one-way deal	$198 or less

Provider with most accurate pricing for Islip Long Island-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Islip Long Island-Washington, D.C. (WAS) flights.

Search Deals

From Islip Long Island to Washington, D.C. (WAS)

Search Deals

One-way flight from Islip Long Island to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Islip Long Island to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Islip Long Island to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Thu 9/10

4:05 pm-5:20 pm

Nonstop1h 15m

Baltimore/Washington

Mon 9/14

8:25 am-9:40 am

Nonstop1h 15m

$163

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Wed 11/11

4:05 pm-5:25 pm

Nonstop1h 20m

Baltimore/Washington

Sat 11/14

1:45 pm-2:55 pm

Nonstop1h 10m

$163

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Tue 9/15

10:55 am-12:15 pm

Nonstop1h 20m

Baltimore/Washington

Tue 9/22

9:05 am-10:15 am

Nonstop1h 10m

$163

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Tue 11/3

4:05 pm-5:25 pm

Nonstop1h 20m

Baltimore/Washington

Sat 11/7

1:45 pm-2:55 pm

Nonstop1h 10m

$184

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Fri 9/11

4:05 pm-5:20 pm

Nonstop1h 15m

Baltimore/Washington

Fri 9/11

8:55 pm-10:10 pm

Nonstop1h 15m

$205

Quickest round-trip

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Sat 10/10

3:50 pm-5:05 pm

Nonstop1h 15m

Baltimore/Washington

Mon 10/12

1:20 pm-2:30 pm

Nonstop1h 10m

$277

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Fri 9/11

12:35 pm-1:50 pm

Nonstop1h 15m

Baltimore/Washington

Sun 9/13

8:40 am-9:55 am

Nonstop1h 15m

$298

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Fri 10/2

5:40 pm-6:55 pm

Nonstop1h 15m

Baltimore/Washington

Sun 10/4

10:25 pm-11:35 pm

Nonstop1h 10m

$298

IslipWashington, D.C.

ISP Islip Long Island - DCA Washington, D.C. Reagan-National

ISPDCA

Islip Long Island

Fri 9/11

7:00 am-2:58 pm

1 stop7h 58m

Washington, D.C. Reagan-National

Sat 9/12

4:35 pm-11:22 pm

1 stop6h 47m

$329

IslipBaltimore

ISP Islip Long Island - BWI Baltimore/Washington

ISPBWI

Islip Long Island

Fri 9/4

4:05 pm-5:20 pm

Nonstop1h 15m

Baltimore/Washington

Mon 9/7

8:25 am-9:40 am

Nonstop1h 15m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 44 resultsSorted by cheapest first

...

Compare providers for flights from Islip to Washington, D.C.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Washington, D.C. in August.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Islip with our price prediction graph.

ISP-WAS

ISP-BWI

ISP-DCA

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 Islip to Washington, D.C.

ISP-WAS

ISP-BWI

ISP-DCA

What is the cheapest time of day to fly from ISP to WAS?

When flying from Islip, New York to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight at noon.

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Southwest from Islip to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,214 reviews

Reviews

1 / 20

6.0

Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest

8.0

Very good

4,214 reviews

Southwest

8.0

Very good

4,214 reviews

Reviews

1 / 20

6.0

Good

Lauren,Dec 2024

MCI - DCA

Related info for your journey

What airport do you fly from for flights from Islip to Washington, D.C.?
Located just 7.2 mi from the city center, Islip Long Island is the airport most travelers will use when flying to Washington, D.C. from Islip. Booking flights from Long Island (ISP) to Washington, D.C. should be relatively easy as there are 0 daily outbound flights to Washington, D.C. from 1 airline.
How long is the flight from Islip, New York to Washington, D.C.?
There are many flights that can get you from Islip, New York to Washington, D.C. in 1h 15m. Fly via Southwest or JetBlue to get the fastest option. The distance between Islip, New York and Washington, D.C. is about 219 mi. This flight may include one or multiple stops.
Can I find deals for flights from Islip to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Islip to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Washington, D.C..
Can I find deals for business class flights from Islip to Washington, D.C.?
Yes. Cheapflights offers flight deals from Islip to Washington, D.C. 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

Alexandria

Owings Mills

Arlington

Tysons

Lanham

Reston

Herndon

Rockville

Hyattsville

Fredericksburg

Falls Church

Hanover

Laurel

Springfield

Oxon Hill

Clinton

Hunt Valley

Woodbridge

Silver Spring

Largo

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Islip

Popular flights

Top destinations

Washington, D.C. flight routes

Alternative routes for Islip to Washington, D.C.

Top airline flying from Islip to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$217	Average$387	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$82+ Cheap flights from Islip, NY (ISP) to Washington, D.C. (WAS)

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Washington, D.C.

Cheapest flights from Islip to Washington, D.C.Explore the most affordable flight options available from Islip to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.

Explore the most affordable flight options available from Islip to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.

Best flights from Islip to Washington, D.C.Discover carefully curated flight deals from Islip to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.

Discover carefully curated flight deals from Islip to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.

Last-minute flights from Islip to Washington, D.C.Discover last-minute flight deals from Islip to Washington, D.C.. Data last updated August 22, 2026 and is based on user searches.

Discover last-minute flight deals from Islip to Washington, D.C.. Data last updated August 22, 2026 and is based on user searches.

One-way flights from Islip to Washington, D.C.Search for one-way flight options from Islip to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.

Search for one-way flight options from Islip to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.

Find flight deals from Islip to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Washington, D.C. that are best for you.

Compare providers for flights from Islip to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Washington, D.C. in August.

Best time to book a flight from Islip to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Islip with our price prediction graph.

Cheapflights Insights

What is the cheapest time of day to fly from ISP to WAS?

Find hourly flight availability from Islip to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2026.

When flying from Islip, New York to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 19% versus a flight at noon.

Reviews of airlines servicing Washington, D.C.

Get a feel of what it's like to fly with Southwest from Islip to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Islip to Washington, D.C.?

How long is the flight from Islip, New York to Washington, D.C.?

Can I find deals for flights from Islip to Washington, D.C. that include hotel bookings?

How can I find direct flights from Islip to Washington, D.C.?

Can I find deals for business class flights from Islip to Washington, D.C.?

Traveling to a place near Washington, D.C.?

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 Islip to Washington, D.C.

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

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Islip to Washington, D.C. by cabin class

Find flights from Islip to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Islip and Washington, D.C. flights

Browse other Islip and Washington, D.C. flight options. Last updated on August 22, 2026.

Other flights from Islip

Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Islip to Washington, D.C. flights

Consider these flights traveling from Islip to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.

Top airline flying from Islip to Washington, D.C.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Islip to Washington, D.C.
Explore the most affordable flight options available from Islip to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.

Best flights from Islip to Washington, D.C.
Discover carefully curated flight deals from Islip to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.

Last-minute flights from Islip to Washington, D.C.
Discover last-minute flight deals from Islip to Washington, D.C.. Data last updated August 22, 2026 and is based on user searches.

One-way flights from Islip to Washington, D.C.
Search for one-way flight options from Islip to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.