$182+ Cheap flights from Islip, NY (ISP) to Luis Munoz Marin Intl (SJU)
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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Aug 23 — Aug 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Islip to Luis Munoz Marin Intl 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 Islip to Luis Munoz Marin Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Islip to Luis Munoz Marin IntlExplore the most affordable flight options available from Islip to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
Explore the most affordable flight options available from Islip to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/810:57 am
ISP
- SJU
1 stop26h 19m
Multiple Airlines
Tue 9/154:39 pm
SJU
- ISP
2 stops18h 41m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$334
This Frontier deal was found by Cheapflights users on 7/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Mon 9/143:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 7/21![Frontier logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/94:13 pm
ISP
- SJU
1 stop9h 37m
Multiple Airlines
Tue 9/154:39 pm
SJU
- ISP
2 stops18h 41m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$344
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/19![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/105:23 pm
ISP
- SJU
2 stops30h 34m
Multiple Airlines
Tue 9/156:42 pm
SJU
- ISP
1 stop14h 51m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/105:23 pm
ISP
- SJU
2 stops30h 34m
Multiple Airlines
Wed 9/166:42 pm
SJU
- ISP
1 stop14h 51m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/810:57 am
ISP
- SJU
1 stop26h 19m
Multiple Airlines
Mon 9/146:42 pm
SJU
- ISP
2 stops18h 16m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$354
This Frontier deal was found by Cheapflights users on 7/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:13 pm
ISP
- SJU
1 stop9h 37m
Frontier
Tue 9/153:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 7/21![Frontier logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/1212:00 pm
ISP
- SJU
2 stops11h 57m
Multiple Airlines
Mon 9/146:42 pm
SJU
- ISP
1 stop14h 51m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/1212:00 pm
ISP
- SJU
2 stops11h 57m
Multiple Airlines
Wed 9/166:42 pm
SJU
- ISP
1 stop14h 51m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$362
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:09 pm
ISP
- SJU
1 stop7h 06m
Frontier
Sat 8/298:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/19![Frontier logo]()
$364
Best flights from Islip to Luis Munoz Marin IntlDiscover carefully curated flight deals from Islip to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
Discover carefully curated flight deals from Islip to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 24, 2026.
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:25 pm
ISP
- SJU
1 stop11h 40m
Southwest
Mon 11/166:15 am
SJU
- ISP
2 stops11h 05m
Southwest
Deal found 7/20![Southwest logo]()
$353
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/184:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Sat 10/242:58 am
SJU
- ISP
1 stop6h 35m
Frontier
Deal found 7/19![Frontier logo]()
$376
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Sun 9/63:10 am
SJU
- ISP
1 stop6h 43m
Frontier
Deal found 7/23![Frontier logo]()
$386
This Southwest deal was found by Cheapflights users on 7/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:20 pm
ISP
- SJU
1 stop6h 40m
Southwest
Wed 8/266:00 am
SJU
- ISP
1 stop6h 10m
Southwest
Deal found 7/22![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 7/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:35 pm
ISP
- SJU
2 stops9h 35m
Southwest
Mon 9/146:00 am
SJU
- ISP
2 stops10h 25m
Southwest
Deal found 7/21![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 7/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:25 pm
ISP
- SJU
2 stops8h 50m
Southwest
Mon 12/146:15 am
SJU
- ISP
2 stops11h 05m
Southwest
Deal found 7/21![Southwest logo]()
$436
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/310:57 am
ISP
- SJU
1 stop8h 35m
Frontier
Fri 8/710:48 pm
SJU
- ISP
1 stop11h 05m
Frontier
Deal found 7/19![Frontier logo]()
$531
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1011:20 am
ISP
- SJU
2 stops9h 40m
Southwest
Fri 1/156:10 am
SJU
- ISP
1 stop6h 50m
Southwest
Deal found 7/20![Southwest logo]()
$485
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:30 am
ISP
- SJU
2 stops11h 10m
Southwest
Wed 8/195:15 am
SJU
- ISP
2 stops11h 40m
Southwest
Deal found 7/20![Southwest logo]()
$536
This Southwest deal was found by Cheapflights users on 7/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:45 pm
ISP
- SJU
2 stops10h 00m
Southwest
Sun 8/236:00 am
SJU
- ISP
2 stops9h 55m
Southwest
Deal found 7/19![Southwest logo]()
$587
Last-minute flights from Islip to Luis Munoz Marin IntlDiscover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated July 24, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:05 am
ISP
- SJU
2 stops12h 05m
Southwest
Wed 8/266:00 am
SJU
- ISP
1 stop6h 10m
Southwest
Deal found 7/22![Southwest logo]()
$388
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/19![Frontier logo]()
$350
This Justfly.com deal was found by Cheapflights users on 7/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
ISP
- SJU
2 stops12h 02m
Multiple Airlines
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$396
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:09 pm
ISP
- SJU
1 stop7h 06m
Frontier
Sat 8/298:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/19![Frontier logo]()
$370
This Frontier deal was found by Cheapflights users on 7/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Sun 8/308:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/21![Frontier logo]()
$376
This Frontier deal was found by Cheapflights users on 7/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:09 pm
ISP
- SJU
1 stop7h 06m
Frontier
Sat 8/298:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/19![Frontier logo]()
$364
This Travelocity deal was found by Cheapflights users on 7/22. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:09 pm
ISP
- SJU
1 stop15h 57m
Frontier
Sun 8/308:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/22![Frontier logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/248:43 pm
ISP
- SJU
2 stops28h 13m
Multiple Airlines
Sun 8/308:57 pm
SJU
- ISP
1 stop12h 56m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$391
This Priceline deal was found by Cheapflights users on 7/22. 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.
Fri 8/2810:57 am
ISP
- SJU
1 stop15h 18m
Frontier
Mon 8/316:09 pm
SJU
- ISP
1 stop15h 44m
Frontier
Deal found 7/22![Frontier logo]()
$380
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:09 pm
ISP
- SJU
1 stop7h 06m
Frontier
Sun 8/308:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/23![Frontier logo]()
$386
One-way flights from Islip to Luis Munoz Marin IntlSearch for one-way flight options from Islip to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
Search for one-way flight options from Islip to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated July 24, 2026.
This Frontier deal was found by Cheapflights users on 7/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Deal found 7/20![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 7/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/184:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Deal found 7/21![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 8/65:50 pm
ISP
- SJU
2 stops30h 51m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$293
This JetBlue deal was found by Cheapflights users on 7/19. 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 12/1212:00 pm
ISP
- SJU
1 stop9h 09m
JetBlue
Deal found 7/19![JetBlue logo]()
$301
This Southwest deal was found by Cheapflights users on 7/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/64:05 pm
ISP
- SJU
1 stop6h 45m
Southwest
Deal found 7/20![Southwest logo]()
$313
This JetBlue deal was found by Cheapflights users on 7/20. 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.
Thu 12/316:20 pm
ISP
- SJU
1 stop6h 45m
JetBlue
Deal found 7/20![JetBlue logo]()
$331
This JetBlue deal was found by Cheapflights users on 7/19. 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.
Mon 12/286:20 pm
ISP
- SJU
1 stop6h 45m
JetBlue
Deal found 7/19![JetBlue logo]()
$379
This JetBlue deal was found by Cheapflights users on 7/19. 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 7/281:28 pm
ISP
- SJU
1 stop7h 07m
JetBlue
Deal found 7/19![JetBlue logo]()
$382
This JetBlue deal was found by Cheapflights users on 7/20. 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 8/86:00 am
ISP
- SJU
1 stop8h 48m
JetBlue
Deal found 7/20![JetBlue logo]()
$392
This JetBlue deal was found by Cheapflights users on 7/22. 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 8/16:00 am
ISP
- SJU
1 stop6h 47m
JetBlue
Deal found 7/22![JetBlue logo]()
$439
Find flight deals from Islip to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Luis Munoz Marin Intl (SJU). 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 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $334 (Kiwi.com) |
One-way from | $182 (Frontier) |
Popular in | February |
Cheapest in | January |
Average price | $389 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Luis Munoz Marin Intl 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 24, 2026.
Use the filters below to find and compare flights from Islip to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 11/12
12:25 pm-1:05 am
1 stop11h 40m
San Juan Luis Munoz Marin Intl
Mon 11/16
6:15 am-4:20 pm
2 stops11h 05m
$353
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sun 10/18
4:13 pm-1:53 am
1 stop9h 40m
San Juan Luis Munoz Marin Intl
Sat 10/24
2:58 am-9:33 am
1 stop6h 35m
$376
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 9/4
10:57 am-7:52 pm
1 stop8h 55m
San Juan Luis Munoz Marin Intl
Sun 9/6
3:10 am-9:53 am
1 stop6h 43m
$386
Quickest round-trip
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Wed 8/19
3:20 pm-10:00 pm
1 stop6h 40m
San Juan Luis Munoz Marin Intl
Wed 8/26
6:00 am-12:10 pm
1 stop6h 10m
$388
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 9/10
12:35 pm-10:10 pm
2 stops9h 35m
San Juan Luis Munoz Marin Intl
Mon 9/14
6:00 am-4:25 pm
2 stops10h 25m
$436
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Wed 12/9
12:25 pm-10:15 pm
2 stops8h 50m
San Juan Luis Munoz Marin Intl
Mon 12/14
6:15 am-4:20 pm
2 stops11h 05m
$436
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sun 1/10
11:20 am-10:00 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Fri 1/15
6:10 am-12:00 pm
1 stop6h 50m
$485
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Mon 8/3
10:57 am-7:32 pm
1 stop8h 35m
San Juan Luis Munoz Marin Intl
Fri 8/7
10:48 pm-9:53 am
1 stop11h 05m
$531
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 8/15
5:30 am-4:40 pm
2 stops11h 10m
San Juan Luis Munoz Marin Intl
Wed 8/19
5:15 am-4:55 pm
2 stops11h 40m
$536
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sun 8/16
12:45 pm-10:45 pm
2 stops10h 00m
San Juan Luis Munoz Marin Intl
Sun 8/23
6:00 am-3:55 pm
2 stops9h 55m
$587
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Islip to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Luis Munoz Marin Intl in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Islip, New York-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Islip, New York-San Juan Luis Munoz Marin Intl Airport 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 Islip to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Islip with our price prediction graph.
ISP-SJU
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.
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luis Munoz Marin Intl. Reviews last updated July 24, 2026.
Read through reviews of airlines operating flights from Islip to San Juan Luis Munoz Marin Intl Airport, such as Southwest and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Islip to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Luquillo
Dorado
Rio Grande
Humacao
Bayamón
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.
Alternative routes
Complete your trip
Flights by cabin class
Luis Munoz Marin Intl flight routes
Other flight options
Other flights from Islip
Popular flights
Alternative routes for Islip to Luis Munoz Marin Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Luis Munoz Marin Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Islip to Luis Munoz Marin Intl by cabin class
Find flights from Islip to Luis Munoz Marin Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 24, 2026.
Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on July 24, 2026.
Other flights from Islip
Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on July 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Islip to Luis Munoz Marin Intl
Discover the top 2 airlines that operate flights from Islip to Luis Munoz Marin Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$356 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$367 | Average$556 | FlexibilityNo cancel fee | On-time63% |