HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$208+ Cheap flights from LaGuardia, NY (LGA) to Islip, NY (ISP)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ISP
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from LaGuardia to Islip 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 LaGuardia to Islip

Cheapest flights from LaGuardia to Islip
Explore the most affordable flight options available from LaGuardia to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:29 pm
LGA
-
ISP
1 stop13h 24m
Multiple Airlines
Sat 9/511:57 am
ISP
-
LGA
2 stops11h 17m
Multiple Airlines
Deal found 7/29$364
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:29 pm
LGA
-
ISP
1 stop13h 24m
Multiple Airlines
Wed 9/211:57 am
ISP
-
LGA
2 stops11h 17m
Multiple Airlines
Deal found 7/29$374
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:29 pm
LGA
-
ISP
1 stop13h 24m
Frontier
Thu 8/2710:57 am
ISP
-
LGA
2 stops12h 17m
Frontier
Deal found 7/28$405
This Priceline deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:00 pm
LGA
-
ISP
1 stop9h 44m
JetBlue
Wed 9/26:00 am
ISP
-
LGA
1 stop8h 59m
JetBlue
Deal found 7/29$407
This JetBlue deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:30 pm
LGA
-
ISP
1 stop9h 07m
JetBlue
Sat 10/316:00 am
ISP
-
LGA
1 stop9h 04m
JetBlue
Deal found 7/30$413
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:29 pm
LGA
-
ISP
1 stop13h 24m
Multiple Airlines
Tue 8/255:27 pm
ISP
-
LGA
2 stops29h 47m
Multiple Airlines
Deal found 7/29$472
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:29 pm
LGA
-
ISP
1 stop13h 24m
Frontier
Fri 8/2810:57 am
ISP
-
LGA
2 stops12h 17m
Frontier
Deal found 7/30$485
This Expedia deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:00 pm
LGA
-
ISP
1 stop7h 33m
JetBlue
Thu 8/276:00 am
ISP
-
LGA
1 stop13h 50m
JetBlue
Deal found 7/28$499
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:29 pm
LGA
-
ISP
1 stop13h 24m
Multiple Airlines
Sat 8/2211:57 am
ISP
-
LGA
2 stops11h 17m
Multiple Airlines
Deal found 7/29$513
This Expedia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:40 am
LGA
-
ISP
1 stop14h 04m
JetBlue
Sat 9/56:00 am
ISP
-
LGA
1 stop13h 50m
JetBlue
Deal found 7/29$514
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:40 am
LGA
-
ISP
1 stop14h 04m
JetBlue
Fri 8/286:00 am
ISP
-
LGA
1 stop7h 32m
JetBlue
Deal found 7/30$526

Find flight deals from LaGuardia to Islip

Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$364
(Kiwi.com)

One-way from

$208
(Kiwi.com)
Provider with most accurate pricing for New York LaGuardia-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York LaGuardia-Islip Long Island flights.
Search Deals
From New York LaGuardia to Islip Long Island
Search Deals
One-way flight from New York LaGuardia to Islip Long Island
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from LaGuardia to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2026.
Use the filters below to find and compare flights from New York LaGuardia Airport to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Mon 8/31

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Sat 9/5

11:57 am-11:14 pm

2 stops11h 17m

$364

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Wed 8/26

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Wed 9/2

11:57 am-11:14 pm

2 stops11h 17m

$374

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Tue 8/25

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Thu 8/27

10:57 am-11:14 pm

2 stops12h 17m

$405
Quickest round-trip

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Tue 10/27

12:30 pm-9:37 pm

1 stop9h 07m

Islip Long Island

Sat 10/31

6:00 am-3:04 pm

1 stop9h 04m

$405

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Mon 8/24

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Fri 8/28

10:57 am-11:14 pm

2 stops12h 17m

$485

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Mon 8/31

7:40 am-9:44 pm

1 stop14h 04m

Islip Long Island

Sat 9/5

6:00 am-7:50 pm

1 stop13h 50m

$514

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Mon 8/24

7:40 am-9:44 pm

1 stop14h 04m

Islip Long Island

Fri 8/28

6:00 am-1:32 pm

1 stop7h 32m

$526

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Thu 8/20

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Sat 8/22

11:57 am-11:14 pm

2 stops11h 17m

$528

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sun 8/23

8:29 pm-9:53 am

1 stop13h 24m

Islip Long Island

Sun 8/30

10:57 am-11:14 pm

2 stops12h 17m

$599

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sun 8/30

7:30 am-7:33 pm

1 stop12h 03m

Islip Long Island

Mon 8/31

6:00 am-1:32 pm

1 stop7h 32m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 18 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on New York LaGuardia Airport-Islip, New York flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on New York LaGuardia Airport-Islip, New York flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New York LaGuardia Airport-Islip, New York flights, Cheapflights users trust Expedia the most. Expedia 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 New York LaGuardia Airport-Islip, New York 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 LaGuardia to Islip

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

Related info for your journey

Find useful and relevant information for your journey from LaGuardia to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Islip from New York LaGuardia?

    Most people fly into Islip Long Island (ISP) if they book a flight to Islip from New York LaGuardia. On average, Long Island has 0 inbound flights from New York LaGuardia per day from 0 airlines. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • How long is the flight from New York LaGuardia Airport to Islip, New York?

    A quick flight from New York LaGuardia Airport to Islip, New York can take about 9h 07m. JetBlue provides one of the quickest options available for as low as $405. The distance between New York LaGuardia Airport and Islip, New York is about 41 mi.

  • Can I find deals for flights from LaGuardia to Islip that include hotel bookings?

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

  • How can I find direct flights from LaGuardia to Islip?

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

  • Can I find deals for business class flights from LaGuardia to Islip?

    Yes. Cheapflights offers flight deals from LaGuardia to Islip 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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.

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.