$96+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Apr 12 — Apr 191
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 March 13, 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 March 13, 2026.
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/127:59 pm
ISP
- SJU
1 stop27h 30m
Frontier
Thu 4/163:19 pm
SJU
- ISP
1 stop17h 54m
Frontier
Deal found 3/9![Frontier logo]()
$192
This Frontier deal was found by Cheapflights users on 3/11. 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 5/14:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Fri 5/83:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 3/11![Frontier logo]()
$212
This CheapOair deal was found by Cheapflights users on 3/8. 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 4/168:31 pm
ISP
- SJU
1 stop26h 58m
Frontier
Sun 4/196:30 am
SJU
- ISP
1 stop26h 43m
Frontier
Deal found 3/8![Frontier logo]()
$213
This CheapOair deal was found by Cheapflights users on 3/11. 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 4/244:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Sat 5/27:00 am
SJU
- ISP
1 stop26h 13m
Frontier
Deal found 3/11![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 3/8. 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 4/234:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Thu 4/303:39 pm
SJU
- ISP
1 stop17h 34m
Frontier
Deal found 3/8![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 3/12. 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
Tue 5/123:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 3/12![Frontier logo]()
$247
This CheapOair deal was found by Cheapflights users on 3/10. 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 4/274:07 pm
ISP
- SJU
1 stop17h 47m
Frontier
Wed 4/293:19 pm
SJU
- ISP
1 stop18h 14m
Frontier
Deal found 3/10![Frontier logo]()
$253
This CheapOair deal was found by Cheapflights users on 3/11. 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 4/174:07 pm
ISP
- SJU
1 stop23h 30m
Frontier
Wed 4/226:30 am
SJU
- ISP
1 stop27h 03m
Frontier
Deal found 3/11![Frontier logo]()
$254
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/301:22 pm
ISP
- SJU
1 stop12h 36m
Frontier
Fri 4/39:10 pm
SJU
- ISP
1 stop13h 20m
Frontier
Deal found 3/7![Frontier logo]()
$258
This CheapOair deal was found by Cheapflights users on 3/11. 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 5/811:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Sun 5/103:03 am
SJU
- ISP
1 stop7h 02m
Frontier
Deal found 3/11![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/127:59 pm
ISP
- SJU
1 stop27h 30m
Frontier
Sat 4/188:00 am
SJU
- ISP
1 stop25h 13m
Frontier
Deal found 3/9![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 3/11. 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 6/26:02 pm
ISP
- SJU
1 stop8h 06m
Frontier
Wed 6/109:15 am
SJU
- ISP
1 stop23h 53m
Frontier
Deal found 3/11![Frontier logo]()
$275
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 March 13, 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 March 13, 2026.
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/301:22 pm
ISP
- SJU
1 stop12h 36m
Frontier
Fri 4/39:10 pm
SJU
- ISP
1 stop13h 20m
Frontier
Deal found 3/7![Frontier logo]()
$258
This Southwest deal was found by Cheapflights users on 3/10. 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 4/142:30 pm
ISP
- SJU
2 stops9h 10m
Southwest
Sat 4/185:45 am
SJU
- ISP
2 stops10h 15m
Southwest
Deal found 3/10![Southwest logo]()
$444
This Frontier deal was found by Cheapflights users on 3/7. 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 5/2910:03 am
ISP
- SJU
1 stop13h 19m
Frontier
Tue 6/26:10 am
SJU
- ISP
1 stop8h 24m
Frontier
Deal found 3/7![Frontier logo]()
$295
This CheapOair deal was found by Cheapflights users on 3/10. 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 5/154:07 pm
ISP
- SJU
1 stop6h 41m
Frontier
Sun 5/176:30 am
SJU
- ISP
1 stop26h 43m
Frontier
Deal found 3/10![Frontier logo]()
$315
This Frontier deal was found by Cheapflights users on 3/7. 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 5/144:07 pm
ISP
- SJU
1 stop6h 41m
Frontier
Mon 5/187:15 am
SJU
- ISP
1 stop7h 40m
Frontier
Deal found 3/7![Frontier logo]()
$330
This Southwest deal was found by Cheapflights users on 3/9. 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.
Fri 5/112:30 pm
ISP
- SJU
2 stops11h 25m
Southwest
Sun 5/105:35 am
SJU
- ISP
2 stops11h 10m
Southwest
Deal found 3/9![Southwest logo]()
$454
This CheapOair deal was found by Cheapflights users on 3/8. 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 6/2410:03 am
ISP
- SJU
1 stop15h 53m
Frontier
Mon 6/296:30 am
SJU
- ISP
1 stop26h 38m
Frontier
Deal found 3/8![Frontier logo]()
$351
This Southwest deal was found by Cheapflights users on 3/12. 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.
Fri 5/112:30 pm
ISP
- SJU
2 stops11h 25m
Southwest
Mon 5/45:05 am
SJU
- ISP
1 stop7h 00m
Southwest
Deal found 3/12![Southwest logo]()
$474
This CheapOair deal was found by Cheapflights users on 3/10. 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 7/1710:03 am
ISP
- SJU
1 stop15h 53m
Frontier
Sat 7/256:30 am
SJU
- ISP
1 stop26h 38m
Frontier
Deal found 3/10![Frontier logo]()
$376
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:30 am
ISP
- SJU
1 stop30h 00m
Frontier
Tue 5/2611:45 am
SJU
- ISP
1 stop21h 23m
Frontier
Deal found 3/7![Frontier logo]()
$391
This Frontier deal was found by Cheapflights users on 3/7. 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 5/2210:03 am
ISP
- SJU
1 stop9h 07m
Frontier
Tue 5/266:10 am
SJU
- ISP
1 stop8h 24m
Frontier
Deal found 3/7![Frontier logo]()
$426
Last-minute flights from Islip to Luis Munoz Marin IntlDiscover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/301:22 pm
ISP
- SJU
1 stop12h 36m
Frontier
Fri 4/39:10 pm
SJU
- ISP
1 stop13h 20m
Frontier
Deal found 3/7![Frontier logo]()
$258
This CheapOair deal was found by Cheapflights users on 3/9. 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 3/301:22 pm
ISP
- SJU
1 stop10h 36m
Frontier
Fri 4/33:16 am
SJU
- ISP
1 stop7h 14m
Frontier
Deal found 3/9![Frontier logo]()
$276
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/301:22 pm
ISP
- SJU
1 stop12h 36m
Frontier
Thu 4/24:35 pm
SJU
- ISP
1 stop8h 51m
Frontier
Deal found 3/7![Frontier logo]()
$298
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/105:45 am
ISP
- SJU
1 stop18h 25m
Frontier
Fri 4/177:15 am
SJU
- ISP
1 stop12h 21m
Frontier
Deal found 3/9![Frontier logo]()
$294
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/127:59 pm
ISP
- SJU
1 stop27h 30m
Frontier
Thu 4/163:19 pm
SJU
- ISP
1 stop17h 54m
Frontier
Deal found 3/9![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 3/11. 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 4/1212:08 pm
ISP
- SJU
1 stop25h 18m
Frontier
Sun 4/196:30 am
SJU
- ISP
1 stop26h 43m
Frontier
Deal found 3/11![Frontier logo]()
$212
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/127:59 pm
ISP
- SJU
1 stop27h 30m
Frontier
Sat 4/188:00 am
SJU
- ISP
1 stop25h 13m
Frontier
Deal found 3/9![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 3/8. 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 4/168:31 pm
ISP
- SJU
1 stop26h 58m
Frontier
Sun 4/196:30 am
SJU
- ISP
1 stop26h 43m
Frontier
Deal found 3/8![Frontier logo]()
$213
This CheapOair deal was found by Cheapflights users on 3/11. 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 4/174:07 pm
ISP
- SJU
1 stop23h 30m
Frontier
Wed 4/226:30 am
SJU
- ISP
1 stop27h 03m
Frontier
Deal found 3/11![Frontier logo]()
$254
This CheapOair deal was found by Cheapflights users on 3/8. 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 4/234:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Thu 4/303:39 pm
SJU
- ISP
1 stop17h 34m
Frontier
Deal found 3/8![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 3/11. 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 4/244:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Sat 5/27:00 am
SJU
- ISP
1 stop26h 13m
Frontier
Deal found 3/11![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 3/10. 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 4/274:07 pm
ISP
- SJU
1 stop17h 47m
Frontier
Wed 4/293:19 pm
SJU
- ISP
1 stop18h 14m
Frontier
Deal found 3/10![Frontier logo]()
$253
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 March 13, 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 March 13, 2026.
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/1011:51 am
ISP
- SJU
1 stop11h 49m
Frontier
Deal found 3/9![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 3/9. 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 4/194:07 pm
ISP
- SJU
1 stop9h 54m
Frontier
Deal found 3/9![Frontier logo]()
$97
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/98:36 pm
ISP
- SJU
1 stop23h 24m
Frontier
Deal found 3/9![Frontier logo]()
$102
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/178:31 pm
ISP
- SJU
1 stop16h 28m
Frontier
Deal found 3/9![Frontier logo]()
$117
This CheapOair deal was found by Cheapflights users on 3/7. 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 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
Deal found 3/7![Frontier logo]()
$118
This CheapOair deal was found by Cheapflights users on 3/9. 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 5/174:07 pm
ISP
- SJU
1 stop17h 47m
Frontier
Deal found 3/9![Frontier logo]()
$122
This CheapOair deal was found by Cheapflights users on 3/10. 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 6/810:03 am
ISP
- SJU
1 stop15h 53m
Frontier
Deal found 3/10![Frontier logo]()
$127
This CheapOair deal was found by Cheapflights users on 3/12. 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 6/511:00 am
ISP
- SJU
1 stop15h 08m
Frontier
Deal found 3/12![Frontier logo]()
$128
This CheapOair deal was found by Cheapflights users on 3/11. 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 5/2711:00 am
ISP
- SJU
1 stop21h 04m
Frontier
Deal found 3/11![Frontier logo]()
$133
This CheapOair deal was found by Cheapflights users on 3/9. 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 3/301:22 pm
ISP
- SJU
1 stop12h 36m
Frontier
Deal found 3/9![Frontier logo]()
$138
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 March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $192 (CheapOair) |
One-way from | $96 (CheapOair) |
Popular in | February |
Cheapest in | January |
Average price | $582 |
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 March 13, 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 3/30
1:22 pm-1:58 am
1 stop12h 36m
San Juan Luis Munoz Marin Intl
Fri 4/3
9:10 pm-10:30 am
1 stop13h 20m
$258
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 5/29
10:03 am-11:22 pm
1 stop13h 19m
San Juan Luis Munoz Marin Intl
Tue 6/2
6:10 am-2:34 pm
1 stop8h 24m
$295
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 5/15
4:07 pm-10:48 pm
1 stop6h 41m
San Juan Luis Munoz Marin Intl
Sun 5/17
6:30 am-9:13 am
1 stop26h 43m
$315
Quickest round-trip
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 5/14
4:07 pm-10:48 pm
1 stop6h 41m
San Juan Luis Munoz Marin Intl
Mon 5/18
7:15 am-2:55 pm
1 stop7h 40m
$330
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Wed 6/24
10:03 am-1:56 am
1 stop15h 53m
San Juan Luis Munoz Marin Intl
Mon 6/29
6:30 am-9:08 am
1 stop26h 38m
$351
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 7/17
10:03 am-1:56 am
1 stop15h 53m
San Juan Luis Munoz Marin Intl
Sat 7/25
6:30 am-9:08 am
1 stop26h 38m
$376
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 5/21
7:30 am-1:30 pm
1 stop30h 00m
San Juan Luis Munoz Marin Intl
Tue 5/26
11:45 am-9:08 am
1 stop21h 23m
$391
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 5/22
10:03 am-7:10 pm
1 stop9h 07m
San Juan Luis Munoz Marin Intl
Tue 5/26
6:10 am-2:34 pm
1 stop8h 24m
$426
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Tue 4/14
2:30 pm-11:40 pm
2 stops9h 10m
San Juan Luis Munoz Marin Intl
Sat 4/18
5:45 am-4:00 pm
2 stops10h 15m
$444
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Fri 5/1
12:30 pm-11:55 pm
2 stops11h 25m
San Juan Luis Munoz Marin Intl
Sun 5/10
5:35 am-4:45 pm
2 stops11h 10m
$454
Showing 1-10 of 22 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 March.
| 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
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 March 13, 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.
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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
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Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on March 13, 2026.
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Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on March 13, 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 March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$106 | Average$274 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$367 | Average$563 | FlexibilityNo cancel fee | On-time63% |