How many flights depart from Washington, D.C. to Islip, New York on average per week?

As of March 2026, 15 flights take off from Washington, D.C. and land in Islip, New York each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.

How long does it take to fly to Islip, New York?

The flight from Washington, D.C. to Islip, New York depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Washington, D.C. (a popular airport in Washington, D.C.) to New York John F Kennedy Intl Airport (the most popular airport in Islip, New York), then the flight time is 1h 17m on average. If you fly from Baltimore (another popular airport in Washington, D.C.) to New York John F Kennedy Intl Airport, then the average flight time is 4h 18m.

How many flights depart from Washington, D.C. to Islip, New York on average per day?

2 flights are operational daily from Washington, D.C. to Islip, New York as of March 2026. The most popular departure time for this route is 10:00AM, with 40% of flights per day taking off at noon.

What airlines fly to Islip, New York?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Islip, New York from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 5 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington, D.C. to Islip Long Island?

Frontier, Southwest, and Breeze Airways are the most popular carriers operating from Washington, D.C. to Islip Long Island

When did momondo last update prices for flights from Washington, D.C. to Islip Long Island Airport?

Prices for flights from Washington, D.C. to Islip Long Island Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Washington, D.C. to Islip Long Island Airport?

As of March 2026, there is 1 operator available to choose from for flights from Washington, D.C. to Islip Long Island Airport.

How old do you have to be to fly from Washington, D.C. to Islip Long Island Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$80 Cheap Flights from Washington, D.C. to Islip in 2026

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Find the cheapest flights from Washington, D.C. to New York

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:05 am - 9:13 am

BWI

ISP

27h 08m

2 stops

8:31 pm - 1:41 pm

ISP

BWI

17h 10m

1 stop

$216Frontier

Thu, Apr 16 - Mon, Apr 20

10:00 pm - 9:13 am

BWI

ISP

11h 13m

1 stop

8:31 pm - 1:41 pm

ISP

BWI

17h 10m

1 stop

$225Frontier

Thu, Apr 16 - Mon, Apr 20

12:40 pm - 1:50 pm

BWI

ISP

1h 10mnonstop

6:30 am - 7:50 am

ISP

BWI

1h 20mnonstop

$263Southwest

Wed, Apr 8 - Wed, Apr 15

3:57 pm - 11:57 pm

IAD

ISP

8h 00m

1 stop

5:45 am - 3:10 pm

ISP

IAD

9h 25m

1 stop

$270Frontier

Sat, Apr 4 - Sat, Apr 11

4:30 pm - 5:40 pm

BWI

ISP

1h 10mnonstop

4:10 pm - 5:30 pm

ISP

BWI

1h 20mnonstop

$272Southwest

Mon, Apr 6 - Wed, Apr 8

5:15 pm - 6:30 pm

BWI

ISP

1h 15mnonstop

8:35 am - 9:55 am

ISP

BWI

1h 20mnonstop

$277Southwest

Wed, Apr 22 - Fri, Apr 24

10:00 pm - 9:13 am

BWI

ISP

11h 13m

1 stop

4:07 pm - 8:12 am

ISP

BWI

16h 05m

2 stops

$279Frontier

Thu, May 14 - Sun, May 17

12:31 pm - 11:10 am

BWI

ISP

22h 39m

2 stops

8:31 pm - 1:41 pm

ISP

BWI

17h 10m

1 stop

$291Multiple Airlines

Fri, Apr 17 - Mon, Apr 20

8:09 am - 7:13 pm

IAD

ISP

11h 04m

2 stops

4:07 pm - 7:27 am

ISP

IAD

15h 20m

1 stop

$329Multiple Airlines

Thu, May 14 - Sun, May 17

6:00 am - 11:35 am

DCA

ISP

5h 35m

1 stop

12:25 pm - 7:30 pm

ISP

DCA

7h 05m

1 stop

$399JetBlue

Thu, Jul 23 - Mon, Jul 27

Southwest flights from Washington, D.C. to Islip, New York

Our best Southwest deals on Washington, D.C. to Islip, New York flight tickets

Southwest

Apr 8

BWI12:40 pmBaltimore/Washington

1h 10m

ISP1:50 pmIslip Long Island

Apr 15

ISP6:30 amIslip Long Island

1h 20m

BWI7:50 amBaltimore/Washington

$263

Southwest

Apr 6

BWI4:30 pmBaltimore/Washington

1h 10m

ISP5:40 pmIslip Long Island

Apr 8

ISP4:10 pmIslip Long Island

1h 20m

BWI5:30 pmBaltimore/Washington

$272

Southwest

Apr 22

BWI5:15 pmBaltimore/Washington

1h 15m

ISP6:30 pmIslip Long Island

Apr 24

ISP8:35 amIslip Long Island

1h 20m

BWI9:55 amBaltimore/Washington

$277

JetBlue flights from Washington, D.C. to Islip, New York

Our best JetBlue deals on Washington, D.C. to Islip, New York flight tickets

JetBlue

Jul 23

DCA6:00 amWashington, D.C. Reagan-National

5h 35m

1 stop

ISP11:35 amIslip Long Island

Jul 27

ISP12:25 pmIslip Long Island

7h 05m

1 stop

DCA7:30 pmWashington, D.C. Reagan-National

$399

JetBlue

May 29

DCA7:10 amWashington, D.C. Reagan-National

6h 29m

1 stop

ISP1:39 pmIslip Long Island

Jun 1

ISP12:25 pmIslip Long Island

10h 07m

1 stop

DCA10:32 pmWashington, D.C. Reagan-National

$417

JetBlue

Jul 22

DCA7:10 amWashington, D.C. Reagan-National

7h 01m

1 stop

ISP2:11 pmIslip Long Island

Jul 26

ISP12:25 pmIslip Long Island

7h 05m

1 stop

DCA7:30 pmWashington, D.C. Reagan-National

$418

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 4/16

6:05 am-9:13 am

2 stops27h 08m

Islip Long Island

Mon 4/20

8:31 pm-1:41 pm

1 stop17h 10m

$216

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 4/16

10:00 pm-9:13 am

1 stop11h 13m

Islip Long Island

Mon 4/20

8:31 pm-1:41 pm

1 stop17h 10m

$225

Quickest round-trip

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Wed 4/8

12:40 pm-1:50 pm

Nonstop1h 10m

Islip Long Island

Wed 4/15

6:30 am-7:50 am

Nonstop1h 20m

$263

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 4/4

3:57 pm-11:57 pm

1 stop8h 00m

Islip Long Island

Sat 4/11

5:45 am-3:10 pm

1 stop9h 25m

$270

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Mon 4/6

4:30 pm-5:40 pm

Nonstop1h 10m

Islip Long Island

Wed 4/8

4:10 pm-5:30 pm

Nonstop1h 20m

$272

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Wed 4/22

5:15 pm-6:30 pm

Nonstop1h 15m

Islip Long Island

Fri 4/24

8:35 am-9:55 am

Nonstop1h 20m

$277

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 5/14

10:00 pm-9:13 am

1 stop11h 13m

Islip Long Island

Sun 5/17

4:07 pm-8:12 am

2 stops16h 05m

$279

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 4/17

12:31 pm-11:10 am

2 stops22h 39m

Islip Long Island

Mon 4/20

8:31 pm-1:41 pm

1 stop17h 10m

$291

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 5/14

8:09 am-7:13 pm

2 stops11h 04m

Islip Long Island

Sun 5/17

4:07 pm-7:27 am

1 stop15h 20m

$329

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 7/23

6:00 am-11:35 am

1 stop5h 35m

Islip Long Island

Mon 7/27

12:25 pm-7:30 pm

1 stop7h 05m

$399

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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What is the cheapest Washington, D.C. to Islip Long Island flight route?

Fly from Baltimore/Washington to Islip Long Island for the best Washington, D.C. - Islip Long Island flight prices

What cabin class options are available on Washington, D.C. to Islip Long Island flights?

There is only 1 cabin class available to choose from on Washington, D.C. to Islip Long Island flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Islip, New York flights?

You could potentially save up to 5% on your flight if you consider stops on a Washington, D.C. to Islip, New York flight.

When to book flights from Washington, D.C. to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. to Islip, New York (WAS to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Islip, New York

Best Price Found	$170
Fastest flight time	1h 10m
Direct flights	Every day
Airports in Islip, New York	1 airport

The best one-way flight to Islip, New York from Washington, D.C. in the past 72 hours is $170. The best round-trip flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $339.

The fastest flight from Washington, D.C. to Islip, New York takes 1h 10m

Direct flights go from Washington, D.C. to Islip, New York every day.

There is 1 airport in Islip, New York. From Washington, D.C. there are direct flights to Islip Long Island (ISP).

Search flight deals

How far is Washington, D.C. to Islip Long Island by plane?
The straight-line distance from Washington, D.C. to Islip Long Island is 238.7 mi. Flights usually cover this in 1h 10m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Washington, D.C. to Islip Long Island Airport?
Prices for flights from Washington, D.C. to Islip Long Island Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Islip Long Island Airport?
As of March 2026, there is 1 operator available to choose from for flights from Washington, D.C. to Islip Long Island Airport.
How old do you have to be to fly from Washington, D.C. to Islip Long Island Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to Islip, New York?
Based on momondo bookings for flights between Washington, D.C. and Islip, New York, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 17.44% of the total bookings. Other popular models include Boeing 737 MAX 8 with 15.12%, Embraer 175 (Enhanced Winglets) with 9.30%, and Airbus A220-300 with 6.98%.
What is the most popular airline from Washington, D.C. to Islip, New York?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. to Islip, New York is Southwest (100% of total bookings).

Best airlines flying from Washington, D.C. to Islip, New York

Compare and see reviews for airlines that fly from Washington, D.C. to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $231	Free Cancellation	Rating 8.0 4,319 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

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Why should I use momondo to find a flight deal from Washington, D.C. to Islip?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Islip. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Islip with flexible booking policies on momondo?

momondo does allow users to show only those flights to Islip from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Islip right now. Can momondo alert me if prices change?

Price alerts on flights to Islip from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Washington, D.C. to New York from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to New York departing on 6/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Southwest flights from Washington, D.C. to Islip, New York

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How to get the cheapest flight ticket from Washington, D.C. to Islip, New York

What is the cheapest Washington, D.C. to Islip Long Island flight route?

What cabin class options are available on Washington, D.C. to Islip Long Island flights?

Can stopping save me money on Washington, D.C. to Islip, New York flights?

What is the cheapest airline that flies from Washington, D.C. to Islip Long Island?

What airlines fly to Islip, New York?

How many flights depart from Washington, D.C. to Islip, New York on average per day?

How many flights depart from Washington, D.C. to Islip, New York on average per week?

How long does it take to fly to Islip, New York?

When to book flights from Washington, D.C. to Islip, New York

Cheap Washington, D.C. to Islip, New York (WAS to ISP) flight deals and tips

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