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

1 flights are operational daily from Washington, D.C. to Islip, New York as of November 2025. The most popular departure time for this route is 11:00AM, with 37% of flights per day taking off in the afternoon.

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

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

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 16m 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 5h 18m.

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 35% 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 week?

As of November 2025, 9 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 33% of weekly flights taking off on this day.

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 November 2025, 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.

$53 Cheap Flights from Washington, D.C. to Islip in 2025/26

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

7:30 am - 7:34 pmBWI-ISP

12h 04m1 stop

8:29 pm - 9:22 amISP-BWI

12h 53m1 stop

$132Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

8:35 pm - 9:45 pmBWI-ISP

1h 10mnonstop

5:40 am - 7:00 amISP-BWI

1h 20mnonstop

$144Southwest

Find Deal

Sat, Dec 6 - Tue, Dec 9

12:57 pm - 8:02 amBWI-ISP

19h 05m1 stop

10:19 am - 8:16 pmISP-BWI

9h 57m1 stop

$146Frontier

Find Deal

Fri, Nov 21 - Thu, Dec 4

12:57 pm - 8:02 amBWI-ISP

19h 05m1 stop

10:19 am - 8:16 pmISP-BWI

9h 57m1 stop

$147Frontier

Find Deal

Fri, Nov 21 - Thu, Dec 4

10:41 am - 10:37 amBWI-ISP

23h 56m1 stop

9:02 am - 5:24 pmISP-BWI

8h 22m1 stop

$154Multiple Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

7:30 am - 7:34 pmBWI-ISP

12h 04m1 stop

8:29 pm - 12:24 amISP-BWI

27h 55m2 stops

$160Multiple Airlines

Find Deal

Tue, Dec 2 - Tue, Dec 9

11:19 am - 10:37 amBWI-ISP

23h 18m1 stop

8:47 am - 5:24 pmISP-BWI

8h 37m1 stop

$161Multiple Airlines

Find Deal

Tue, Nov 18 - Sat, Nov 22

10:45 pm - 11:55 pmBWI-ISP

1h 10mnonstop

5:40 am - 7:00 amISP-BWI

1h 20mnonstop

$239Southwest

Find Deal

Wed, Nov 26 - Wed, Dec 3

7:00 am - 2:13 pmDCA-ISP

7h 13m1 stop

11:50 am - 6:55 pmISP-DCA

7h 05m1 stop

$290JetBlue

Find Deal

Mon, Dec 8 - Wed, Dec 10

10:45 am - 6:01 pmDCA-ISP

7h 16m1 stop

4:09 pm - 10:29 pmISP-DCA

6h 20m1 stop

$470JetBlue

Find Deal

Thu, Nov 20 - Wed, Nov 26

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

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

Frontier

Nov 21

BWI12:57 pmBaltimore/Washington

19h 05m

1 stop

ISP8:02 amIslip Long Island

Dec 4

ISP10:19 amIslip Long Island

9h 57m

1 stop

BWI8:16 pmBaltimore/Washington

$146

Find similar

Frontier

Nov 21

BWI12:57 pmBaltimore/Washington

19h 05m

1 stop

ISP8:02 amIslip Long Island

Dec 4

ISP10:19 amIslip Long Island

9h 57m

1 stop

BWI8:16 pmBaltimore/Washington

$147

Find similar

Frontier

Nov 21

BWI12:57 pmBaltimore/Washington

19h 05m

1 stop

ISP8:02 amIslip Long Island

Dec 4

ISP1:15 pmIslip Long Island

11h 09m

2 stops

BWI12:24 amBaltimore/Washington

$174

Find similar

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

Dec 8

DCA7:00 amWashington, D.C. Reagan-National

7h 13m

1 stop

ISP2:13 pmIslip Long Island

Dec 10

ISP11:50 amIslip Long Island

7h 05m

1 stop

DCA6:55 pmWashington, D.C. Reagan-National

$290

Find similar

JetBlue

Nov 19

DCA8:45 amWashington, D.C. Reagan-National

25h 00m

1 stop

ISP9:45 amIslip Long Island

Nov 21

ISP6:56 pmIslip Long Island

21h 53m

1 stop

DCA4:49 pmWashington, D.C. Reagan-National

$410

Find similar

JetBlue

Nov 20

DCA10:45 amWashington, D.C. Reagan-National

7h 16m

1 stop

ISP6:01 pmIslip Long Island

Nov 26

ISP4:09 pmIslip Long Island

6h 20m

1 stop

DCA10:29 pmWashington, D.C. Reagan-National

$470

Find similar

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

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Tue 12/2

7:30 am-7:34 pm

1 stop12h 04m

Islip Long Island

Tue 12/9

8:29 pm-9:22 am

1 stop12h 53m

$132

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Sat 12/6

8:35 pm-9:45 pm

Nonstop1h 10m

Islip Long Island

Tue 12/9

5:40 am-7:00 am

Nonstop1h 20m

$144

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 11/21

12:57 pm-8:02 am

1 stop19h 05m

Islip Long Island

Thu 12/4

10:19 am-8:16 pm

1 stop9h 57m

$146

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 11/21

12:57 pm-8:02 am

1 stop19h 05m

Islip Long Island

Thu 12/4

10:19 am-8:16 pm

1 stop9h 57m

$147

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 11/20

10:41 am-10:37 am

1 stop23h 56m

Islip Long Island

Mon 11/24

9:02 am-5:24 pm

1 stop8h 22m

$154

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Tue 12/2

7:30 am-7:34 pm

1 stop12h 04m

Islip Long Island

Tue 12/9

8:29 pm-12:24 am

2 stops27h 55m

$160

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Tue 11/18

11:19 am-10:37 am

1 stop23h 18m

Islip Long Island

Sat 11/22

8:47 am-5:24 pm

1 stop8h 37m

$161

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Wed 11/26

10:45 pm-11:55 pm

Nonstop1h 10m

Islip Long Island

Wed 12/3

5:40 am-7:00 am

Nonstop1h 20m

$239

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Mon 12/8

7:00 am-2:13 pm

1 stop7h 13m

Islip Long Island

Wed 12/10

11:50 am-6:55 pm

1 stop7h 05m

$290

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 11/20

10:45 am-6:01 pm

1 stop7h 16m

Islip Long Island

Wed 11/26

4:09 pm-10:29 pm

1 stop6h 20m

$470

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

Airlines

Other information

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

The month of April is, on average, the cheapest month to fly to Islip, New York from Washington, D.C., with most prices found around $285. If you aren’t able to travel to Islip, New York during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $320.

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Washington, D.C. to Islip, New York is on a Tuesday. Travelers who choose to depart for Islip, New York on a Tuesday will often find tickets for as low as $296. The most expensive day to fly to Islip, New York is Sunday, with ticket prices averaging around $487.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $337 when looking at flights departing in the afternoon. Flights to Islip, New York are more costly in the morning, with an average ticket price of $377. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 34% 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	$470
Fastest flight time	1h 10m
Direct flights	Every day
Airports in Islip, New York	1 airport

The best flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $470

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 near Islip, New York: 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 November 2025, 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 22.30% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 14.19%, Embraer 175 with 9.46%, and Boeing 737 MAX 8 with 8.11%.
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 4,240 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.

An easier way to manage your Islip, New York trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Fri 12/5

Fri 12/12

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing New York

Popular cities in the United States

Flights to New Yorkfrom $44

Flights to Los Angelesfrom $49

Flights to Miamifrom $49

Flights to Chicagofrom $54

Flights to Orlandofrom $49

Flights to Las Vegasfrom $42

Flights to San Franciscofrom $57

Flights to Washington, D.C.from $49

Flights to Bostonfrom $49

Flights to Atlantafrom $40

Flights to Dallasfrom $59

Flights to Seattlefrom $58

Fly to other destinations from Washington, D.C.

Flights from Washington, D.C. Dulles Intl to Miami

Flights from Baltimore/Washington to Orlando

Flights from Washington, D.C. Dulles Intl to Atlanta Hartsfield-Jackson

Flights from Baltimore/Washington to Miami

Flights from Washington, D.C. Dulles Intl to Orlando

Flights from Baltimore/Washington to Atlanta Hartsfield-Jackson

Cheap flights from Washington, D.C. to New York from $53

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 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

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

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

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

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

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.

See travel insights to New York from

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

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

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Washington, D.C. to Islip, New York is on a Tuesday. Travelers who choose to depart for Islip, New York on a Tuesday will often find tickets for as low as $296. The most expensive day to fly to Islip, New York is Sunday, with ticket prices averaging around $487.

What is the cheapest time of day to depart on your flight to Islip, New York?

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 34% on your flight if you consider stops on a Washington, D.C. to Islip, New York flight.

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

Frontier, Southwest, and Avelo Airlines are the most popular carriers operating 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?

1 flights are operational daily from Washington, D.C. to Islip, New York as of November 2025. The most popular departure time for this route is 11:00AM, with 37% of flights per day taking off in the afternoon.

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

As of November 2025, 9 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 33% of weekly flights taking off on this day.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Islip, New York

How far is Washington, D.C. to Islip Long Island by plane?

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

How many operators does momondo search 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?

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

What is the most popular plane model from Washington, D.C. to Islip, New York?

What is the most popular airline 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

Traveling to a place near New York?

Why use momondo?

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

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

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

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

An easier way to manage your Islip, New York trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing New York