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

As of April 2026, 20 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.

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

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

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 43% 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.

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 April 2026. The most popular departure time for this route is 10:00AM, with 46% of flights per day taking off in the evening.

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 13m 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 44m.

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 April 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.

$87 Cheap Flights from Washington, D.C. to Islip in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. and Islip, New York?

Prices are currently low for flights on this route. Typical prices usually range from $397 to $319. The lowest price recently found on this route was $214.

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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.

9:52 am - 5:58 pm

BWI

ISP

8h 06m

1 stop

10:48 am - 9:01 am

ISP

BWI

22h 13m

1 stop

$214Frontier

Sat, Jun 6 - Wed, Jun 10

7:27 pm - 10:27 am

IAD

ISP

15h 00m

1 stop

5:38 pm - 4:22 pm

ISP

IAD

22h 44m

1 stop

$224Frontier

Sat, May 16 - Tue, May 19

12:32 pm - 7:05 pm

IAD

ISP

6h 33m

1 stop

10:48 am - 12:53 pm

ISP

IAD

26h 05m

1 stop

$230Frontier

Fri, Jun 12 - Mon, Jun 15

3:26 pm - 10:27 am

BWI

ISP

19h 01m

1 stop

6:02 pm - 7:43 am

ISP

BWI

37h 41m

2 stops

$239Frontier

Wed, May 13 - Tue, May 26

6:49 am - 5:58 pm

IAD

ISP

11h 09m

2 stops

5:38 pm - 4:22 pm

ISP

IAD

22h 44m

1 stop

$242Frontier

Sat, May 16 - Tue, May 19

9:30 pm - 10:03 am

BWI

ISP

12h 33m

1 stop

7:18 pm - 4:22 pm

ISP

BWI

21h 04m

2 stops

$244Multiple Airlines

Fri, Jun 12 - Tue, Jun 16

9:52 am - 5:58 pm

BWI

ISP

8h 06m

1 stop

10:48 am - 7:35 am

ISP

BWI

20h 47m

2 stops

$249Multiple Airlines

Sat, Jun 6 - Wed, Jun 10

12:40 pm - 1:50 pm

BWI

ISP

1h 10mnonstop

4:10 pm - 5:30 pm

ISP

BWI

1h 20mnonstop

$263Southwest

Wed, May 20 - Wed, May 20

5:25 pm - 11:40 pm

DCA

ISP

6h 15m

1 stop

5:20 am - 12:00 pm

ISP

DCA

6h 40m

1 stop

$347Southwest

Fri, Jun 12 - Mon, Jun 15

7:10 am - 1:39 pm

DCA

ISP

6h 29m

1 stop

1:36 pm - 7:59 pm

ISP

DCA

6h 23m

1 stop

$376JetBlue

Tue, Jun 2 - Sat, Jun 6

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

Jun 2

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

6h 29m

1 stop

ISP1:39 pmIslip Long Island

Jun 6

ISP1:36 pmIslip Long Island

6h 23m

1 stop

DCA7:59 pmWashington, D.C. Reagan-National

$433

JetBlue

Jun 23

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

7h 02m

1 stop

ISP2:12 pmIslip Long Island

Jun 30

ISP3:07 pmIslip Long Island

7h 29m

1 stop

DCA10:36 pmWashington, D.C. Reagan-National

$463

JetBlue

Jun 28

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

7h 02m

1 stop

ISP2:12 pmIslip Long Island

Jun 30

ISP3:07 pmIslip Long Island

7h 29m

1 stop

DCA10:36 pmWashington, D.C. Reagan-National

$480

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

May 20

BWI12:40 pmBaltimore/Washington

1h 10m

ISP1:50 pmIslip Long Island

May 20

ISP4:10 pmIslip Long Island

1h 20m

BWI5:30 pmBaltimore/Washington

$263

Southwest

May 16

BWI10:05 pmBaltimore/Washington

1h 15m

ISP11:20 pmIslip Long Island

May 19

ISP4:10 pmIslip Long Island

1h 20m

BWI5:30 pmBaltimore/Washington

$271

Southwest

May 28

BWI7:10 pmBaltimore/Washington

1h 15m

ISP8:25 pmIslip Long Island

Jun 4

ISP3:05 pmIslip Long Island

1h 15m

BWI4:20 pmBaltimore/Washington

$279

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

Sat 6/6

9:52 am-5:58 pm

1 stop8h 06m

Islip Long Island

Wed 6/10

10:48 am-9:01 am

1 stop22h 13m

$214

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 5/16

7:27 pm-10:27 am

1 stop15h 00m

Islip Long Island

Tue 5/19

5:38 pm-4:22 pm

1 stop22h 44m

$224

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Fri 6/12

12:32 pm-7:05 pm

1 stop6h 33m

Islip Long Island

Mon 6/15

10:48 am-12:53 pm

1 stop26h 05m

$230

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Wed 5/13

3:26 pm-10:27 am

1 stop19h 01m

Islip Long Island

Tue 5/26

6:02 pm-7:43 am

2 stops37h 41m

$239

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 5/16

6:49 am-5:58 pm

2 stops11h 09m

Islip Long Island

Tue 5/19

5:38 pm-4:22 pm

1 stop22h 44m

$242

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 6/12

9:30 pm-10:03 am

1 stop12h 33m

Islip Long Island

Tue 6/16

7:18 pm-4:22 pm

2 stops21h 04m

$244

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Sat 6/6

9:52 am-5:58 pm

1 stop8h 06m

Islip Long Island

Wed 6/10

10:48 am-7:35 am

2 stops20h 47m

$249

Quickest round-trip

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Wed 5/20

12:40 pm-1:50 pm

Nonstop1h 10m

Islip Long Island

Wed 5/20

4:10 pm-5:30 pm

Nonstop1h 20m

$263

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Fri 6/12

5:25 pm-11:40 pm

1 stop6h 15m

Islip Long Island

Mon 6/15

5:20 am-12:00 pm

1 stop6h 40m

$347

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Tue 6/2

7:10 am-1:39 pm

1 stop6h 29m

Islip Long Island

Sat 6/6

1:36 pm-7:59 pm

1 stop6h 23m

$376

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

Prices

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Other information

What is the typical price of a round-trip flight between Washington, D.C. and Islip, New York?

What is the cheapest month to fly to Islip, New York?

The month of February is, on average, the cheapest month to fly to Islip, New York from Washington, D.C., with most prices found around $0. If you aren’t able to travel to Islip, New York during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $80.

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

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	$139
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 $139. The best round-trip flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $346.

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

Frequently asked questions about flying from Washington, D.C. to Islip, New York

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 April 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 MAX 8, making up 23.00% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 23.00%, Airbus A220-300 with 5.00%, and Airbus A320neo with 4.00%.
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 $221	Free Cancellation	Rating 8.0 4,314 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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 $87

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 5/19. 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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JetBlue flights from Washington, D.C. to Islip, New York

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

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

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

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

What is the typical price of a round-trip flight between Washington, D.C. and Islip, New York?

What is the cheapest month to fly to Islip, New York?

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

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

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

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Direct flights

Airports in Islip, New York

Frequently asked questions about flying from Washington, D.C. to Islip, New York

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

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