$194+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Jul 7 — Jul 141
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 June 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 June 7, 2026.
This Frontier deal was found by Cheapflights users on 6/4. 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.
Tue 9/14:41 pm
ISP
- SJU
1 stop9h 13m
Frontier
Tue 9/86:00 am
SJU
- ISP
1 stop9h 56m
Frontier
Deal found 6/4![Frontier logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:50 pm
ISP
- SJU
1 stop28h 33m
Multiple Airlines
Thu 9/105:12 pm
SJU
- ISP
2 stops17h 16m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$342
This Frontier deal was found by Cheapflights users on 6/4. 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.
Thu 8/2710:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Tue 9/86:00 am
SJU
- ISP
1 stop9h 56m
Frontier
Deal found 6/4![Frontier logo]()
$350
This Frontier deal was found by Cheapflights users on 6/4. 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.
Wed 9/210:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Sat 9/123:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 6/4![Frontier logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:50 pm
ISP
- SJU
1 stop28h 33m
Multiple Airlines
Tue 9/154:39 pm
SJU
- ISP
2 stops18h 41m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$362
This Priceline deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:13 pm
ISP
- SJU
1 stop25h 23m
Frontier
Mon 9/289:03 am
SJU
- ISP
1 stop24h 30m
Frontier
Deal found 6/4![Frontier logo]()
$364
This Frontier deal was found by Cheapflights users on 6/4. 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.
Thu 8/2710:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Thu 9/33:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 6/4![Frontier logo]()
$370
This Kiwi.com deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:41 pm
ISP
- SJU
1 stop9h 13m
Frontier
Sun 9/134:39 pm
SJU
- ISP
1 stop26h 12m
Frontier
Deal found 6/4![Frontier logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Wed 9/211:57 am
ISP
- SJU
2 stops29h 39m
Multiple Airlines
Sun 9/134:39 pm
SJU
- ISP
1 stop26h 12m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$375
This Frontier deal was found by Cheapflights users on 6/4. 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 8/2810:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Fri 9/43:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 6/4![Frontier logo]()
$376
This Frontier deal was found by Cheapflights users on 6/7. 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.
Wed 8/510:57 am
ISP
- SJU
1 stop8h 45m
Frontier
Thu 8/138:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 6/7![Frontier logo]()
$388
This Frontier deal was found by Cheapflights users on 6/6. 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 10/174:13 pm
ISP
- SJU
1 stop9h 40m
Frontier
Sat 10/246:05 am
SJU
- ISP
1 stop8h 58m
Frontier
Deal found 6/6![Frontier logo]()
$390
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 June 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 June 7, 2026.
This Frontier deal was found by Cheapflights users on 6/6. 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 9/254:13 pm
ISP
- SJU
1 stop9h 37m
Frontier
Sat 9/263:00 am
SJU
- ISP
1 stop6h 33m
Frontier
Deal found 6/6![Frontier logo]()
$396
This Priceline deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/43:39 pm
ISP
- SJU
1 stop8h 20m
Multiple Airlines
Fri 7/108:37 pm
SJU
- ISP
1 stop13h 16m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$399
This JetBlue deal was found by Cheapflights users on 6/7. 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.
Tue 8/46:00 am
ISP
- SJU
1 stop6h 48m
JetBlue
Thu 8/133:01 pm
SJU
- ISP
1 stop7h 55m
JetBlue
Deal found 6/7![JetBlue logo]()
$454
This Southwest deal was found by Cheapflights users on 6/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:15 pm
ISP
- SJU
2 stops10h 35m
Southwest
Mon 9/285:00 am
SJU
- ISP
2 stops11h 25m
Southwest
Deal found 6/4![Southwest logo]()
$460
This Frontier deal was found by Cheapflights users on 6/5. 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 8/2910:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Tue 9/16:00 am
SJU
- ISP
1 stop9h 56m
Frontier
Deal found 6/5![Frontier logo]()
$416
This Priceline deal was found by Cheapflights users on 6/5. 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.
Sat 6/209:52 pm
ISP
- SJU
1 stop25h 37m
Frontier
Tue 6/233:06 am
SJU
- ISP
1 stop17h 51m
Frontier
Deal found 6/5![Frontier logo]()
$416
This JetBlue deal was found by Cheapflights users on 6/7. 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.
Tue 7/73:07 pm
ISP
- SJU
1 stop8h 50m
JetBlue
Tue 7/219:42 am
SJU
- ISP
1 stop9h 51m
JetBlue
Deal found 6/7![JetBlue logo]()
$466
This Southwest deal was found by Cheapflights users on 6/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:10 am
ISP
- SJU
2 stops10h 45m
Southwest
Sun 9/276:00 am
SJU
- ISP
2 stops9h 55m
Southwest
Deal found 6/4![Southwest logo]()
$508
This JetBlue deal was found by Cheapflights users on 6/7. 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.
Tue 8/46:00 am
ISP
- SJU
1 stop6h 48m
JetBlue
Wed 8/123:01 pm
SJU
- ISP
1 stop6h 33m
JetBlue
Deal found 6/7![JetBlue logo]()
$475
This Frontier deal was found by Cheapflights users on 6/2. 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.
Sun 8/3010:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Wed 9/23:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 6/2![Frontier logo]()
$440
This Frontier deal was found by Cheapflights users on 6/2. 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.
Sun 6/219:52 pm
ISP
- SJU
1 stop10h 03m
Frontier
Thu 6/259:24 am
SJU
- ISP
1 stop11h 33m
Frontier
Deal found 6/2![Frontier logo]()
$445
This Frontier deal was found by Cheapflights users on 6/2. 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 7/210:48 am
ISP
- SJU
1 stop12h 41m
Frontier
Sun 7/58:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 6/2![Frontier logo]()
$466
Last-minute flights from Islip to Luis Munoz Marin IntlDiscover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated June 7, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 6/5. 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.
Sat 6/209:52 pm
ISP
- SJU
1 stop25h 37m
Frontier
Tue 6/233:06 am
SJU
- ISP
1 stop17h 51m
Frontier
Deal found 6/5![Frontier logo]()
$416
This Trip.com deal was found by Cheapflights users on 6/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/259:52 pm
ISP
- SJU
1 stop28h 17m
Frontier
Sun 6/286:00 am
SJU
- ISP
1 stop14h 57m
Frontier
Deal found 6/4![Frontier logo]()
$413
This Priceline deal was found by Cheapflights users on 6/5. 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.
Sat 6/279:52 pm
ISP
- SJU
1 stop28h 17m
Frontier
Mon 6/293:06 am
SJU
- ISP
1 stop12h 50m
Frontier
Deal found 6/5![Frontier logo]()
$390
This Frontier deal was found by Cheapflights users on 6/3. 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.
Sat 6/279:52 pm
ISP
- SJU
1 stop10h 03m
Frontier
Wed 7/13:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 6/3![Frontier logo]()
$395
This Frontier deal was found by Cheapflights users on 6/4. 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 6/289:52 pm
ISP
- SJU
1 stop10h 03m
Frontier
Wed 7/13:06 am
SJU
- ISP
1 stop6h 57m
Frontier
Deal found 6/4![Frontier logo]()
$424
This Priceline deal was found by Cheapflights users on 6/3. 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.
Wed 7/19:52 pm
ISP
- SJU
1 stop15h 24m
Multiple Airlines
Wed 7/85:30 am
SJU
- ISP
1 stop8h 42m
Multiple Airlines
Deal found 6/3![Multiple Airlines logo]()
$409
This Priceline deal was found by Cheapflights users on 6/5. 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.
Fri 7/310:48 am
ISP
- SJU
1 stop21h 07m
Frontier
Fri 7/108:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 6/5![Frontier logo]()
$376
This Priceline deal was found by Cheapflights users on 6/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/43:39 pm
ISP
- SJU
1 stop8h 20m
Multiple Airlines
Fri 7/1010:48 pm
SJU
- ISP
1 stop11h 05m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$399
This Priceline deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:58 pm
ISP
- SJU
1 stop6h 59m
Multiple Airlines
Thu 7/233:10 am
SJU
- ISP
1 stop6h 43m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$436
This Frontier deal was found by Cheapflights users on 6/2. 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.
Fri 7/1710:57 am
ISP
- SJU
1 stop8h 35m
Frontier
Tue 7/218:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 6/2![Frontier logo]()
$420
This Frontier deal was found by Cheapflights users on 6/3. 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.
Sat 7/2510:43 am
ISP
- SJU
1 stop8h 59m
Frontier
Sun 8/28:37 pm
SJU
- ISP
1 stop13h 16m
Frontier
Deal found 6/3![Frontier logo]()
$370
This Frontier deal was found by Cheapflights users on 6/3. 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.
Mon 7/2710:57 am
ISP
- SJU
1 stop10h 46m
Frontier
Fri 7/3110:48 pm
SJU
- ISP
1 stop11h 05m
Frontier
Deal found 6/3![Frontier logo]()
$425
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 June 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 June 7, 2026.
This Priceline deal was found by Cheapflights users on 6/3. 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 7/107:46 pm
ISP
- SJU
1 stop28h 55m
Frontier
Deal found 6/3![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 6/7. 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.
Sat 6/279:52 pm
ISP
- SJU
1 stop10h 03m
Frontier
Deal found 6/7![Frontier logo]()
$208
This JetBlue deal was found by Cheapflights users on 6/6. 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.
Sat 7/43:39 pm
ISP
- SJU
1 stop8h 20m
JetBlue
Deal found 6/6![JetBlue logo]()
$211
This Priceline deal was found by Cheapflights users on 6/2. 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.
Fri 6/197:50 pm
ISP
- SJU
1 stop28h 47m
Frontier
Deal found 6/2![Frontier logo]()
$214
This JetBlue deal was found by Cheapflights users on 6/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ISP
- SJU
1 stop8h 42m
JetBlue
Deal found 6/2![JetBlue logo]()
$218
This Trip.com deal was found by Cheapflights users on 6/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/189:52 pm
ISP
- SJU
1 stop28h 17m
Frontier
Deal found 6/2![Frontier logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 6/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/203:39 pm
ISP
- SJU
1 stop8h 20m
JetBlue
Deal found 6/4![JetBlue logo]()
$223
This Frontier deal was found by Cheapflights users on 6/6. 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 7/1510:57 am
ISP
- SJU
1 stop8h 45m
Frontier
Deal found 6/6![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 6/3. 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.
Thu 6/259:52 pm
ISP
- SJU
1 stop10h 03m
Frontier
Deal found 6/3![Frontier logo]()
$237
This Priceline deal was found by Cheapflights users on 6/3. 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 6/129:52 pm
ISP
- SJU
1 stop15h 24m
Frontier
Deal found 6/3![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 6/6. 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.
Tue 6/304:41 pm
ISP
- SJU
1 stop6h 48m
Frontier
Deal found 6/6![Frontier logo]()
$253
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 June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $336 (Frontier) |
One-way from | $194 (Priceline) |
Popular in | February |
Cheapest in | January |
Average price | $594 |
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 June 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
Fri 9/25
4:13 pm-1:50 am
1 stop9h 37m
San Juan Luis Munoz Marin Intl
Sat 9/26
3:00 am-9:33 am
1 stop6h 33m
$396
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 7/4
3:39 pm-11:59 pm
1 stop8h 20m
San Juan Luis Munoz Marin Intl
Fri 7/10
8:37 pm-9:53 am
1 stop13h 16m
$399
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 8/29
10:48 am-11:29 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Tue 9/1
6:00 am-3:56 pm
1 stop9h 56m
$416
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sat 6/20
9:52 pm-11:29 pm
1 stop25h 37m
San Juan Luis Munoz Marin Intl
Tue 6/23
3:06 am-8:57 pm
1 stop17h 51m
$416
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sun 8/30
10:48 am-11:29 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Wed 9/2
3:06 am-10:03 am
1 stop6h 57m
$440
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Sun 6/21
9:52 pm-7:55 am
1 stop10h 03m
San Juan Luis Munoz Marin Intl
Thu 6/25
9:24 am-8:57 pm
1 stop11h 33m
$445
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Tue 8/4
6:00 am-12:48 pm
1 stop6h 48m
San Juan Luis Munoz Marin Intl
Thu 8/13
3:01 pm-10:56 pm
1 stop7h 55m
$454
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 9/24
1:15 pm-11:50 pm
2 stops10h 35m
San Juan Luis Munoz Marin Intl
Mon 9/28
5:00 am-4:25 pm
2 stops11h 25m
$460
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Tue 7/7
3:07 pm-11:57 pm
1 stop8h 50m
San Juan Luis Munoz Marin Intl
Tue 7/21
9:42 am-7:33 pm
1 stop9h 51m
$466
IslipSan Juan
ISP - SJU
ISPSJU
Islip Long Island
Thu 7/2
10:48 am-11:29 pm
1 stop12h 41m
San Juan Luis Munoz Marin Intl
Sun 7/5
8:37 pm-9:53 am
1 stop13h 16m
$466
Showing 1-10 of 24 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 June.
| 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.
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 June 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.
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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
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 June 7, 2026.
Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on June 7, 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 June 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 June 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% |