$88+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
May 23 — May 301
Round-trip
1 adult, Economy
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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
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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 April 23, 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 April 23, 2026.
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Tue 5/123:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/21![Frontier logo]()
$186
This Priceline deal was found by Cheapflights users on 4/17. 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 5/86:59 pm
ISP
- SJU
1 stop19h 02m
Frontier
Tue 5/126:00 am
SJU
- ISP
1 stop28h 05m
Frontier
Deal found 4/17![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Fri 5/86:09 pm
SJU
- ISP
1 stop15h 56m
Frontier
Deal found 4/20![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:59 pm
ISP
- SJU
1 stop19h 02m
Frontier
Mon 5/113:33 pm
SJU
- ISP
1 stop19h 27m
Frontier
Deal found 4/21![Frontier logo]()
$204
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Fri 6/53:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/20![Frontier logo]()
$212
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/94:41 pm
ISP
- SJU
1 stop9h 28m
Frontier
Wed 6/176:05 pm
SJU
- ISP
1 stop15h 58m
Frontier
Deal found 4/21![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Mon 5/46:30 am
SJU
- ISP
1 stop28h 30m
Frontier
Deal found 4/20![Frontier logo]()
$225
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:31 pm
ISP
- SJU
1 stop13h 52m
Frontier
Fri 5/83:33 pm
SJU
- ISP
1 stop18h 32m
Frontier
Deal found 4/21![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:50 pm
ISP
- SJU
1 stop28h 47m
Frontier
Wed 6/176:05 pm
SJU
- ISP
1 stop15h 58m
Frontier
Deal found 4/21![Frontier logo]()
$236
This Priceline deal was found by Cheapflights users on 4/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/611:00 am
ISP
- SJU
1 stop8h 08m
Frontier
Sun 6/146:16 pm
SJU
- ISP
1 stop15h 47m
Frontier
Deal found 4/21![Frontier logo]()
$244
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 April 23, 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 April 23, 2026.
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Fri 5/86:09 pm
SJU
- ISP
1 stop15h 56m
Frontier
Deal found 4/20![Frontier logo]()
$196
This Priceline deal was found by Cheapflights users on 4/17. 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 5/28:59 pm
ISP
- SJU
1 stop12h 13m
Multiple Airlines
Tue 5/53:03 am
SJU
- ISP
1 stop7h 02m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$318
This Frontier deal was found by Cheapflights users on 4/18. 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 4/304:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Mon 5/47:15 am
SJU
- ISP
1 stop12h 21m
Frontier
Deal found 4/18![Frontier logo]()
$233
This Priceline deal was found by Cheapflights users on 4/18. 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 6/111:00 am
ISP
- SJU
1 stop12h 22m
Frontier
Fri 6/54:46 pm
SJU
- ISP
1 stop25h 12m
Frontier
Deal found 4/18![Frontier logo]()
$347
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1811:00 am
ISP
- SJU
1 stop26h 15m
Frontier
Wed 5/273:58 pm
SJU
- ISP
1 stop18h 07m
Frontier
Deal found 4/21![Frontier logo]()
$347
This Frontier deal was found by Cheapflights users on 4/19. 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.
Wed 5/611:00 am
ISP
- SJU
1 stop11h 43m
Frontier
Sun 5/103:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/19![Frontier logo]()
$347
This Priceline deal was found by Cheapflights users on 4/18. 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.
Thu 5/1411:12 am
ISP
- SJU
1 stop14h 56m
Frontier
Mon 5/186:25 pm
SJU
- ISP
1 stop16h 35m
Frontier
Deal found 4/18![Frontier logo]()
$357
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Tue 7/216:00 am
SJU
- ISP
1 stop9h 56m
Frontier
Deal found 4/20![Frontier logo]()
$361
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:00 am
ISP
- SJU
1 stop21h 04m
Frontier
Tue 5/264:46 pm
SJU
- ISP
1 stop25h 12m
Frontier
Deal found 4/20![Frontier logo]()
$366
This CheapOair deal was found by Cheapflights users on 4/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1810:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Sun 6/214:05 pm
SJU
- ISP
1 stop17h 58m
Frontier
Deal found 4/22![Frontier logo]()
$406
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:50 pm
ISP
- SJU
1 stop28h 33m
Frontier
Fri 7/173:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 4/20![Frontier logo]()
$406
This Frontier deal was found by Cheapflights users on 4/17. 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 6/1910:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Sun 6/213:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 4/17![Frontier logo]()
$471
Last-minute flights from Islip to Luis Munoz Marin IntlDiscover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated April 23, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:31 pm
ISP
- SJU
1 stop13h 52m
Frontier
Fri 5/83:33 pm
SJU
- ISP
1 stop18h 32m
Frontier
Deal found 4/21![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Mon 5/46:30 am
SJU
- ISP
1 stop28h 30m
Frontier
Deal found 4/20![Frontier logo]()
$225
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:31 pm
ISP
- SJU
1 stop26h 58m
Frontier
Mon 5/46:30 am
SJU
- ISP
1 stop28h 30m
Frontier
Deal found 4/21![Frontier logo]()
$254
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Fri 5/86:09 pm
SJU
- ISP
1 stop15h 56m
Frontier
Deal found 4/20![Frontier logo]()
$196
This Priceline deal was found by Cheapflights users on 4/17. 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 5/86:59 pm
ISP
- SJU
1 stop19h 02m
Frontier
Tue 5/126:00 am
SJU
- ISP
1 stop28h 05m
Frontier
Deal found 4/17![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:59 pm
ISP
- SJU
1 stop19h 02m
Frontier
Mon 5/113:33 pm
SJU
- ISP
1 stop19h 27m
Frontier
Deal found 4/21![Frontier logo]()
$204
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Tue 5/123:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/21![Frontier logo]()
$186
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:00 am
ISP
- SJU
1 stop21h 04m
Frontier
Fri 5/223:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/21![Frontier logo]()
$271
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Fri 6/53:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 4/20![Frontier logo]()
$212
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 April 23, 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 April 23, 2026.
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Deal found 4/21![Frontier logo]()
$88
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1311:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Deal found 4/20![Frontier logo]()
$98
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1411:12 am
ISP
- SJU
1 stop14h 56m
Frontier
Deal found 4/20![Frontier logo]()
$106
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:50 pm
ISP
- SJU
1 stop28h 47m
Frontier
Deal found 4/20![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 4/20. 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 4/304:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Deal found 4/20![Frontier logo]()
$127
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:38 pm
ISP
- SJU
1 stop8h 30m
Frontier
Deal found 4/21![Frontier logo]()
$132
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/264:07 pm
ISP
- SJU
1 stop17h 47m
Frontier
Deal found 4/20![Frontier logo]()
$133
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/234:41 pm
ISP
- SJU
1 stop9h 28m
Frontier
Deal found 4/20![Frontier logo]()
$138
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:50 pm
ISP
- SJU
1 stop28h 47m
Frontier
Deal found 4/20![Frontier logo]()
$158
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1110:48 am
ISP
- SJU
1 stop15h 21m
Frontier
Deal found 4/20![Frontier logo]()
$170
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:00 am
ISP
- SJU
1 stop12h 22m
Frontier
Deal found 4/20![Frontier logo]()
$183
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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $186 (CheapOair) |
One-way from | $88 (CheapOair) |
Popular in | February |
Cheapest in | January |
Average price | $657 |
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 April 23, 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
Mon 5/4
4:07 pm-2:01 am
1 stop9h 54m
San Juan Luis Munoz Marin Intl
Fri 5/8
6:09 pm-10:05 am
1 stop15h 56m
$196
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 4/30
4:07 pm-2:01 am
1 stop9h 54m
San Juan Luis Munoz Marin Intl
Mon 5/4
7:15 am-7:36 pm
1 stop12h 21m
$233
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 5/2
8:59 pm-9:12 am
1 stop12h 13m
San Juan Luis Munoz Marin Intl
Tue 5/5
3:03 am-10:05 am
1 stop7h 02m
$318
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Mon 6/1
11:00 am-11:22 pm
1 stop12h 22m
San Juan Luis Munoz Marin Intl
Fri 6/5
4:46 pm-5:58 pm
1 stop25h 12m
$347
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Mon 5/18
11:00 am-1:15 pm
1 stop26h 15m
San Juan Luis Munoz Marin Intl
Wed 5/27
3:58 pm-10:05 am
1 stop18h 07m
$347
Quickest round-trip
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Wed 5/6
11:00 am-10:43 pm
1 stop11h 43m
San Juan Luis Munoz Marin Intl
Sun 5/10
3:03 am-10:05 am
1 stop7h 02m
$347
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 5/14
11:12 am-2:08 am
1 stop14h 56m
San Juan Luis Munoz Marin Intl
Mon 5/18
6:25 pm-11:00 am
1 stop16h 35m
$357
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 7/16
10:48 am-11:29 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Tue 7/21
6:00 am-3:56 pm
1 stop9h 56m
$361
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 5/23
11:00 am-8:04 am
1 stop21h 04m
San Juan Luis Munoz Marin Intl
Tue 5/26
4:46 pm-5:58 pm
1 stop25h 12m
$366
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 6/18
10:48 am-11:29 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Sun 6/21
4:05 pm-10:03 am
1 stop17h 58m
$406
Showing 1-10 of 23 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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.
Cheapflights Insights
Everything you need to know about your flight from Islip to San Juan Luis Munoz Marin Intl Airport
What is the cheapest month to book a flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport (average of $290). Flying from Islip, New York to San Juan Luis Munoz Marin Intl Airport in February is currently the most expensive (average of $871). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Islip, New York to San Juan Luis Munoz Marin Intl Airport?
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 April 23, 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.
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Food
7.0
Crew
8.6
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
Dorado
Luquillo
Rio Grande
Humacao
Bayamón
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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 April 23, 2026.
Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on April 23, 2026.
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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 April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$356 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$367 | Average$535 | FlexibilityNo cancel fee | On-time63% |