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 August 2025. The most popular departure time for this route is 10:00AM, with 40% of flights per day taking off in the evening.

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 32% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 6 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?

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

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

As of August 2025, 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 14m 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 38m.

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 August 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.

$78 Cheap Flights from Washington, D.C. to Islip in 2025

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

8:21 am - 4:27 pmBWI-ISP

8h 06m1 stop

9:49 am - 8:05 pmISP-BWI

10h 16m1 stop

$175Frontier

Find Deal

Fri, Oct 3 - Sun, Oct 5

11:40 am - 12:50 pmBWI-ISP

1h 10mnonstop

5:30 pm - 6:50 pmISP-BWI

1h 20mnonstop

$177Southwest

Find Deal

Thu, Nov 6 - Thu, Nov 13

9:37 pm - 10:40 amBWI-ISP

13h 03m1 stop

5:05 pm - 9:23 amISP-BWI

16h 18m1 stop

$184Frontier

Find Deal

Thu, Sep 25 - Sat, Sep 27

11:31 am - 10:37 amBWI-ISP

23h 06m1 stop

11:37 am - 9:48 pmISP-BWI

10h 11m1 stop

$185Frontier

Find Deal

Mon, Oct 27 - Thu, Oct 30

9:29 am - 5:42 pmBWI-ISP

8h 13m1 stop

9:54 am - 5:23 pmISP-BWI

7h 29m1 stop

$191Frontier

Find Deal

Thu, Nov 13 - Mon, Nov 17

4:15 pm - 9:09 amBWI-ISP

16h 54m2 stops

9:27 pm - 8:34 amISP-BWI

11h 07m1 stop

$193Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

9:52 pm - 9:09 amIAD-ISP

11h 17m1 stop

9:27 pm - 4:34 pmISP-IAD

19h 07m2 stops

$193Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

9:45 pm - 10:55 pmBWI-ISP

1h 10mnonstop

6:00 am - 7:15 amISP-BWI

1h 15mnonstop

$195Southwest

Find Deal

Fri, Sep 12 - Sun, Sep 14

6:40 am - 1:02 pmDCA-ISP

6h 22m1 stop

1:57 pm - 10:29 pmISP-DCA

8h 32m1 stop

$287JetBlue

Find Deal

Thu, Nov 13 - Mon, Nov 17

6:40 am - 1:02 pmDCA-ISP

6h 22m1 stop

1:57 pm - 10:29 pmISP-DCA

8h 32m1 stop

$335JetBlue

Find Deal

Thu, Nov 13 - Sun, Nov 16

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

Nov 6

BWI11:40 amBaltimore/Washington

1h 10m

ISP12:50 pmIslip Long Island

Nov 13

ISP5:30 pmIslip Long Island

1h 20m

BWI6:50 pmBaltimore/Washington

$177

Find similar

Southwest

Sep 12

BWI9:45 pmBaltimore/Washington

1h 10m

ISP10:55 pmIslip Long Island

Sep 14

ISP6:00 amIslip Long Island

1h 15m

BWI7:15 amBaltimore/Washington

$195

Find similar

Southwest

Oct 17

BWI10:40 amBaltimore/Washington

1h 10m

ISP11:50 amIslip Long Island

Oct 20

ISP5:30 amIslip Long Island

1h 15m

BWI6:45 amBaltimore/Washington

$278

Find similar

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

Oct 3

BWI8:21 amBaltimore/Washington

8h 06m

1 stop

ISP4:27 pmIslip Long Island

Oct 5

ISP9:49 amIslip Long Island

10h 16m

1 stop

BWI8:05 pmBaltimore/Washington

$175

Find similar

Frontier

Sep 25

BWI9:37 pmBaltimore/Washington

13h 03m

1 stop

ISP10:40 amIslip Long Island

Sep 27

ISP5:05 pmIslip Long Island

16h 18m

1 stop

BWI9:23 amBaltimore/Washington

$184

Find similar

Frontier

Oct 27

BWI11:31 amBaltimore/Washington

23h 06m

1 stop

ISP10:37 amIslip Long Island

Oct 30

ISP11:37 amIslip Long Island

10h 11m

1 stop

BWI9:48 pmBaltimore/Washington

$185

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

Fri 10/3

8:21 am-4:27 pm

1 stop8h 06m

Islip Long Island

Sun 10/5

9:49 am-8:05 pm

1 stop10h 16m

$175

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 11/6

11:40 am-12:50 pm

Nonstop1h 10m

Islip Long Island

Thu 11/13

5:30 pm-6:50 pm

Nonstop1h 20m

$177

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 9/25

9:37 pm-10:40 am

1 stop13h 03m

Islip Long Island

Sat 9/27

5:05 pm-9:23 am

1 stop16h 18m

$184

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Mon 10/27

11:31 am-10:37 am

1 stop23h 06m

Islip Long Island

Thu 10/30

11:37 am-9:48 pm

1 stop10h 11m

$185

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 11/13

9:29 am-5:42 pm

1 stop8h 13m

Islip Long Island

Mon 11/17

9:54 am-5:23 pm

1 stop7h 29m

$191

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Thu 11/13

4:15 pm-9:09 am

2 stops16h 54m

Islip Long Island

Sun 11/16

9:27 pm-8:34 am

1 stop11h 07m

$193

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 11/13

9:52 pm-9:09 am

1 stop11h 17m

Islip Long Island

Sun 11/16

9:27 pm-4:34 pm

2 stops19h 07m

$193

BaltimoreIslip

BWI - ISP

BWIISP

Baltimore/Washington

Fri 9/12

9:45 pm-10:55 pm

Nonstop1h 10m

Islip Long Island

Sun 9/14

6:00 am-7:15 am

Nonstop1h 15m

$195

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 11/13

6:40 am-1:02 pm

1 stop6h 22m

Islip Long Island

Mon 11/17

1:57 pm-10:29 pm

1 stop8h 32m

$287

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 11/13

6:40 am-1:02 pm

1 stop6h 22m

Islip Long Island

Sun 11/16

1:57 pm-10:29 pm

1 stop8h 32m

$335

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 are 1 cabin classes 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?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Islip, New York.

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	$78
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 $78. The best round-trip flight deal from Washington, D.C. to Islip, New York found on momondo in the last 72 hours is $175.

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 August 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 24.43% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 17.19%, Boeing 737 MAX 8 with 12.22%, and Airbus A220-300 with 8.14%.
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 $233	Free Cancellation	Rating 8.0 4,244 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

Tue 8/19

Tue 8/26

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 $58

Flights to Los Angelesfrom $46

Flights to Miamifrom $61

Flights to Chicagofrom $45

Flights to Orlandofrom $45

Flights to Las Vegasfrom $17

Flights to San Franciscofrom $59

Flights to Washington, D.C.from $58

Flights to Bostonfrom $76

Flights to Atlantafrom $48

Flights to Dallasfrom $57

Flights to Seattlefrom $71

Fly to other destinations from Washington, D.C.

Flights from Washington, D.C. Dulles Intl to Valparaiso Destin-Ft Walton Beach

Flights from Washington, D.C. Dulles Intl to Savannah/Hilton Head

Flights from Baltimore/Washington to Miami

Flights from Baltimore/Washington to Detroit Metropolitan Wayne County

Flights from Washington, D.C. Dulles Intl to South Bend/Michiana

Flights from Washington, D.C. Reagan-National to New York John F Kennedy Intl

Cheap flights from Washington, D.C. to New York from $78

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 11/11. 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

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

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

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

Our best Frontier 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 are 1 cabin classes 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?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Islip, New York.

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

Southwest, Frontier, and JetBlue 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?

2 flights are operational daily from Washington, D.C. to Islip, New York as of August 2025. The most popular departure time for this route is 10:00AM, with 40% of flights per day taking off in the evening.

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

As of August 2025, 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?

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