$168+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Aug 6 — Aug 131
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
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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 July 7, 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 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/2510:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Tue 9/18:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/2![Frontier logo]()
$334
This Frontier deal was found by Cheapflights users on 7/5. 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 8/1210:57 am
ISP
- SJU
1 stop8h 45m
Frontier
Tue 8/188:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/5![Frontier logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/255:27 pm
ISP
- SJU
2 stops31h 29m
Multiple Airlines
Tue 9/18:57 pm
SJU
- ISP
1 stop12h 56m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$348
This Frontier deal was found by Cheapflights users on 7/7. 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 stop7h 06m
Frontier
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/7![Frontier logo]()
$350
This Frontier deal was found by Cheapflights users on 7/6. 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.
Sat 9/510:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Tue 9/83:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 7/6![Frontier logo]()
$355
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:57 am
ISP
- SJU
1 stop21h 00m
Frontier
Sun 8/98:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 7/2![Frontier logo]()
$356
This Priceline deal was found by Cheapflights users on 7/5. 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 8/277:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Sun 8/303:10 am
SJU
- ISP
1 stop15h 04m
Frontier
Deal found 7/5![Frontier logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Thu 8/277:09 pm
ISP
- SJU
1 stop13h 02m
Multiple Airlines
Mon 8/315:37 pm
SJU
- ISP
2 stops19h 51m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$365
This Priceline deal was found by Cheapflights users on 7/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Mon 8/178:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 7/3![Frontier logo]()
$370
This Priceline deal was found by Cheapflights users on 7/5. 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 8/37:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Thu 8/610:48 pm
SJU
- ISP
1 stop11h 05m
Frontier
Deal found 7/5![Frontier logo]()
$374
This Frontier deal was found by Cheapflights users on 7/5. 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 10/234:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Mon 10/262:55 am
SJU
- ISP
1 stop11h 38m
Frontier
Deal found 7/5![Frontier logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 7/6. 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
Fri 9/48:57 pm
SJU
- ISP
1 stop21h 17m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$379
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 7, 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 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/255:27 pm
ISP
- SJU
2 stops31h 29m
Multiple Airlines
Tue 9/18:57 pm
SJU
- ISP
1 stop12h 56m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$348
This Frontier deal was found by Cheapflights users on 7/7. 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 stop7h 06m
Frontier
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/7![Frontier logo]()
$350
This Southwest deal was found by Cheapflights users on 7/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:05 am
ISP
- SJU
2 stops12h 05m
Southwest
Tue 9/110:30 am
SJU
- ISP
2 stops10h 35m
Southwest
Deal found 7/2![Southwest logo]()
$364
This Frontier deal was found by Cheapflights users on 7/6. 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.
Sat 9/510:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Tue 9/83:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 7/6![Frontier logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Fri 8/142:28 pm
ISP
- SJU
2 stops34h 13m
Multiple Airlines
Mon 8/1710:48 pm
SJU
- ISP
1 stop11h 05m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$383
This Frontier deal was found by Cheapflights users on 7/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Sun 8/308:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/2![Frontier logo]()
$370
This Priceline deal was found by Cheapflights users on 7/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Mon 8/178:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 7/3![Frontier logo]()
$370
This Frontier deal was found by Cheapflights users on 7/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Mon 8/249:16 am
SJU
- ISP
1 stop8h 58m
Frontier
Deal found 7/4![Frontier logo]()
$370
This Frontier deal was found by Cheapflights users on 7/7. 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 7/3110:57 am
ISP
- SJU
1 stop10h 46m
Frontier
Fri 8/73:10 am
SJU
- ISP
1 stop6h 43m
Frontier
Deal found 7/7![Frontier logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 7/6. 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 8/57:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Tue 8/113:36 pm
SJU
- ISP
2 stops18h 17m
Frontier
Deal found 7/6![Frontier logo]()
$411
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 7, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated July 7, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 7/5. 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 8/37:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Thu 8/610:48 pm
SJU
- ISP
1 stop11h 05m
Frontier
Deal found 7/5![Frontier logo]()
$374
This Priceline deal was found by Cheapflights users on 7/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:57 am
ISP
- SJU
1 stop21h 00m
Frontier
Sun 8/98:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 7/2![Frontier logo]()
$356
This Frontier deal was found by Cheapflights users on 7/5. 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 8/1210:57 am
ISP
- SJU
1 stop8h 45m
Frontier
Wed 8/198:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/5![Frontier logo]()
$336
This Priceline deal was found by Cheapflights users on 7/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Mon 8/178:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 7/3![Frontier logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Fri 8/142:28 pm
ISP
- SJU
2 stops34h 13m
Multiple Airlines
Mon 8/1710:48 pm
SJU
- ISP
1 stop11h 05m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$383
This Frontier deal was found by Cheapflights users on 7/7. 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 stop7h 06m
Frontier
Tue 8/258:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/7![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 7/6. 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
Fri 9/48:57 pm
SJU
- ISP
1 stop21h 17m
Multiple Airlines
Deal found 7/6![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/2510:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Tue 9/18:57 pm
SJU
- ISP
1 stop12h 56m
Frontier
Deal found 7/2![Frontier logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Tue 8/255:27 pm
ISP
- SJU
2 stops31h 29m
Multiple Airlines
Tue 9/18:57 pm
SJU
- ISP
1 stop12h 56m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$348
This Priceline deal was found by Cheapflights users on 7/5. 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 8/277:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Sun 8/303:10 am
SJU
- ISP
1 stop15h 04m
Frontier
Deal found 7/5![Frontier logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Thu 8/277:09 pm
ISP
- SJU
1 stop13h 02m
Multiple Airlines
Mon 8/315:37 pm
SJU
- ISP
2 stops19h 51m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 8/282:28 pm
ISP
- SJU
2 stops34h 28m
Multiple Airlines
Fri 9/48:57 pm
SJU
- ISP
1 stop21h 17m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$385
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 7, 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 7, 2026.
This Frontier deal was found by Cheapflights users on 7/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Deal found 7/3![Frontier logo]()
$168
This Frontier deal was found by Cheapflights users on 7/5. 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.
Sat 10/244:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Deal found 7/5![Frontier logo]()
$182
This Frontier deal was found by Cheapflights users on 7/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:57 am
ISP
- SJU
1 stop8h 55m
Frontier
Deal found 7/4![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 7/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:09 pm
ISP
- SJU
1 stop13h 02m
Frontier
Deal found 7/4![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 7/6. 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 7/2910:57 am
ISP
- SJU
1 stop8h 45m
Frontier
Deal found 7/6![Frontier logo]()
$208
This Frontier deal was found by Cheapflights users on 7/6. 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 8/1410:57 am
ISP
- SJU
1 stop10h 46m
Frontier
Deal found 7/6![Frontier logo]()
$232
This JetBlue deal was found by Cheapflights users on 7/4. 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.
Mon 8/314:48 pm
ISP
- SJU
1 stop9h 18m
JetBlue
Deal found 7/4![JetBlue logo]()
$248
This JetBlue deal was found by Cheapflights users on 7/5. 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 7/306:00 am
ISP
- SJU
1 stop8h 42m
JetBlue
Deal found 7/5![JetBlue logo]()
$329
This JetBlue deal was found by Cheapflights users on 7/6. 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 7/146:00 am
ISP
- SJU
1 stop8h 42m
JetBlue
Deal found 7/6![JetBlue logo]()
$343
This JetBlue deal was found by Cheapflights users on 7/7. 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 7/2311:31 am
ISP
- SJU
1 stop9h 04m
JetBlue
Deal found 7/7![JetBlue logo]()
$601
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 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $334 (Kiwi.com) |
One-way from | $168 (Frontier) |
Popular in | February |
Cheapest in | January |
Average price | $362 |
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 7, 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
Tue 8/25
5:27 pm-12:56 am
2 stops31h 29m
San Juan Luis Munoz Marin Intl
Tue 9/1
8:57 pm-9:53 am
1 stop12h 56m
$348
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 8/20
7:09 pm-2:15 am
1 stop7h 06m
San Juan Luis Munoz Marin Intl
Tue 8/25
8:57 pm-9:53 am
1 stop12h 56m
$350
Quickest round-trip
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 9/5
10:57 am-7:52 pm
1 stop8h 55m
San Juan Luis Munoz Marin Intl
Tue 9/8
3:00 am-9:33 am
1 stop6h 33m
$355
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Tue 8/25
6:05 am-6:10 pm
2 stops12h 05m
San Juan Luis Munoz Marin Intl
Tue 9/1
10:30 am-9:05 pm
2 stops10h 35m
$364
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 8/27
7:09 pm-8:11 am
1 stop13h 02m
San Juan Luis Munoz Marin Intl
Sun 8/30
8:57 pm-9:53 am
1 stop12h 56m
$370
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 8/14
7:46 pm-12:41 am
1 stop28h 55m
San Juan Luis Munoz Marin Intl
Mon 8/17
8:37 pm-9:53 am
1 stop13h 16m
$370
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 8/21
7:09 pm-8:11 am
1 stop13h 02m
San Juan Luis Munoz Marin Intl
Mon 8/24
9:16 am-6:14 pm
1 stop8h 58m
$370
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 8/14
2:28 pm-12:41 am
2 stops34h 13m
San Juan Luis Munoz Marin Intl
Mon 8/17
10:48 pm-9:53 am
1 stop11h 05m
$383
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 7/31
10:57 am-9:43 pm
1 stop10h 46m
San Juan Luis Munoz Marin Intl
Fri 8/7
3:10 am-9:53 am
1 stop6h 43m
$390
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Wed 8/5
7:46 pm-12:41 am
1 stop28h 55m
San Juan Luis Munoz Marin Intl
Tue 8/11
3:36 pm-9:53 am
2 stops18h 17m
$411
Showing 1-10 of 20 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 7, 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
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Comfort
8.0
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
Rio Grande
Dorado
Humacao
Bayamón
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Other flights to Luis Munoz Marin Intl
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Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on July 7, 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 July 7, 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% |