$155+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ISP
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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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
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Cheapest flights from LaGuardia to IslipExplore 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 August 5, 2026.
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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/18:29 pm -
1 stop13h 24m
Tue 9/810:57 am -
2 stops12h 17m
Deal found 8/4![Frontier logo]()
$417
This JetBlue deal was found by Cheapflights users on 8/4. 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 -
1 stop9h 07m
Sat 10/316:00 am -
1 stop9h 04m
Deal found 8/4![JetBlue logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/288:29 pm -
1 stop13h 24m
Fri 9/47:09 pm -
1 stop15h 08m
Deal found 7/31![Frontier logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sat 9/58:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops10h 02m
Deal found 8/3![Frontier logo]()
$449
This Expedia deal was found by Cheapflights users on 8/4. 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 9/112:00 pm -
1 stop7h 33m
Tue 9/86:00 am -
1 stop13h 50m
Deal found 8/4![JetBlue logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/48:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops12h 17m
Deal found 8/2![Frontier logo]()
$506
This Expedia deal was found by Cheapflights users on 8/3. 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.
Sat 9/52:29 pm -
1 stop9h 05m
Mon 9/711:35 am -
1 stop10h 24m
Deal found 8/3![JetBlue logo]()
$578
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 -
1 stop13h 24m
Sun 8/2310:57 am -
2 stops10h 02m
Deal found 8/4![Frontier logo]()
$657
This Expedia deal was found by Cheapflights users on 7/31. 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.
Fri 8/288:59 pm -
1 stop12h 17m
Fri 9/46:00 am -
1 stop7h 32m
Deal found 7/31![JetBlue logo]()
$681
Best flights from LaGuardia to IslipDiscover carefully curated flight deals from LaGuardia to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from LaGuardia to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/18:29 pm -
1 stop13h 24m
Tue 9/810:57 am -
2 stops12h 17m
Deal found 8/4![Frontier logo]()
$417
This JetBlue deal was found by Cheapflights users on 8/4. 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 -
1 stop9h 07m
Sat 10/316:00 am -
1 stop9h 04m
Deal found 8/4![JetBlue logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/98:29 pm -
1 stop13h 24m
Fri 8/142:28 pm -
2 stops32h 15m
Deal found 8/1![Multiple Airlines logo]()
$710
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sat 9/58:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops10h 02m
Deal found 8/3![Frontier logo]()
$449
This Expedia deal was found by Cheapflights users on 8/3. 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.
Sat 9/52:29 pm -
1 stop9h 05m
Mon 9/711:35 am -
1 stop10h 24m
Deal found 8/3![JetBlue logo]()
$578
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/78:29 pm -
1 stop13h 24m
Sun 8/97:49 pm -
2 stops26h 54m
Deal found 8/2![Multiple Airlines logo]()
$825
This Expedia deal was found by Cheapflights users on 8/4. 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.
Fri 8/217:40 am -
1 stop14h 04m
Sun 8/236:00 am -
1 stop8h 45m
Deal found 8/4![JetBlue logo]()
$921
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Sat 8/812:00 pm -
1 stop9h 44m
Fri 8/216:00 am -
1 stop8h 45m
Deal found 7/31![JetBlue logo]()
$1,044
This Orbitz deal was found by Cheapflights users on 8/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:29 pm -
1 stop9h 38m
Mon 9/76:00 am -
1 stop7h 32m
Deal found 8/2![JetBlue logo]()
$1,066
Last-minute flights from LaGuardia to IslipDiscover last-minute flight deals from LaGuardia to Islip. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from LaGuardia to Islip. Data last updated August 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/48:29 pm -
1 stop13h 24m
Thu 8/67:49 pm -
2 stops26h 54m
Deal found 7/31![Multiple Airlines logo]()
$792
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/68:29 pm -
1 stop13h 24m
Sun 8/97:49 pm -
2 stops26h 54m
Deal found 7/31![Multiple Airlines logo]()
$804
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/98:29 pm -
1 stop13h 24m
Fri 8/142:28 pm -
2 stops32h 15m
Deal found 8/1![Multiple Airlines logo]()
$710
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 -
1 stop13h 24m
Sun 8/2310:57 am -
2 stops10h 02m
Deal found 8/4![Frontier logo]()
$657
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/288:29 pm -
1 stop13h 24m
Fri 9/47:09 pm -
1 stop15h 08m
Deal found 7/31![Frontier logo]()
$425
This Expedia deal was found by Cheapflights users on 7/31. 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.
Fri 8/288:59 pm -
1 stop12h 17m
Fri 9/46:00 am -
1 stop7h 32m
Deal found 7/31![JetBlue logo]()
$681
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/18:29 pm -
1 stop13h 24m
Tue 9/810:57 am -
2 stops12h 17m
Deal found 8/4![Frontier logo]()
$417
This Expedia deal was found by Cheapflights users on 8/4. 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 9/112:00 pm -
1 stop7h 33m
Tue 9/86:00 am -
1 stop13h 50m
Deal found 8/4![JetBlue logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 9/48:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops12h 17m
Deal found 8/2![Frontier logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sat 9/58:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops10h 02m
Deal found 8/3![Frontier logo]()
$449
This Expedia deal was found by Cheapflights users on 8/3. 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.
Sat 9/52:29 pm -
1 stop9h 05m
Mon 9/711:35 am -
1 stop10h 24m
Deal found 8/3![JetBlue logo]()
$578
One-way flights from LaGuardia to IslipSearch for one-way flight options from LaGuardia to Islip. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from LaGuardia to Islip. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/216:15 am -
2 stops29h 05m
Deal found 8/4![Multiple Airlines logo]()
$155
This Priceline deal was found by Cheapflights users on 8/4. 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.
Mon 9/211:29 pm -
1 stop9h 53m
Deal found 8/4![JetBlue logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sat 8/158:37 pm -
2 stops37h 16m
Deal found 8/4![Frontier logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/910:00 pm -
3 stops42h 47m
Deal found 7/31![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 8/1610:00 pm -
2 stops15h 28m
Deal found 8/4![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sun 8/168:29 pm -
1 stop13h 24m
Deal found 8/4![Frontier logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Sat 8/1510:55 pm -
3 stops18h 15m
Deal found 8/4![Multiple Airlines logo]()
$466
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/98:29 pm -
1 stop13h 24m
Deal found 7/31![Frontier logo]()
$519
This Priceline deal was found by Cheapflights users on 8/4. 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.
Sat 8/152:29 pm -
1 stop9h 38m
Deal found 8/4![JetBlue logo]()
$1,048
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 August 5, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $417 (Kiwi.com) |
One-way from | $155 (Kiwi.com) |
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 August 5, 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
Cheapest round-trip
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Tue 9/1
8:29 pm-9:53 am
1 stop13h 24m
Islip Long Island
Tue 9/8
10:57 am-11:14 pm
2 stops12h 17m
$417
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
$423
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Sat 9/5
8:29 pm-9:53 am
1 stop13h 24m
Islip Long Island
Mon 9/7
10:57 am-8:59 pm
2 stops10h 02m
$449
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Sat 9/5
2:29 pm-11:34 pm
1 stop9h 05m
Islip Long Island
Mon 9/7
11:35 am-9:59 pm
1 stop10h 24m
$578
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Sun 8/9
8:29 pm-9:53 am
1 stop13h 24m
Islip Long Island
Fri 8/14
2:28 pm-10:43 pm
2 stops32h 15m
$710
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Fri 8/7
8:29 pm-9:53 am
1 stop13h 24m
Islip Long Island
Sun 8/9
7:49 pm-10:43 pm
2 stops26h 54m
$825
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Fri 8/21
7:40 am-9:44 pm
1 stop14h 04m
Islip Long Island
Sun 8/23
6:00 am-2:45 pm
1 stop8h 45m
$921
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Sat 8/8
12:00 pm-9:44 pm
1 stop9h 44m
Islip Long Island
Fri 8/21
6:00 am-2:45 pm
1 stop8h 45m
$1,044
Quickest round-trip
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Fri 9/4
2:29 pm-12:07 am
1 stop9h 38m
Islip Long Island
Mon 9/7
6:00 am-1:32 pm
1 stop7h 32m
$1,066
Cheapest one-way
New YorkIslip
LGA - ISP
LGAISP
New York LaGuardia
Mon 9/21
6:15 am-11:20 am
2 stops29h 05m
$155
Showing 1-10 of 15 resultsSorted by cheapest first
- 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.
LGA-ISP
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.
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Book flights to Islip if you plan to visit one of these locationsRiverhead
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