$142+ Cheap flights from Islip, NY (ISP) to Luis Munoz Marin Intl (SJU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Oct 9 — Oct 161
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Islip to Luis Munoz Marin Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Luis Munoz Marin Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Islip to Luis Munoz Marin IntlExplore the most affordable flight options available from Islip to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 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 September 9, 2026.
This Frontier deal was found by Cheapflights users on 9/6. 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 10/176:25 pm -
1 stop7h 28m
Sat 10/2410:39 am -
1 stop6h 51m
Deal found 9/6![Frontier logo]()
$284
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:43 pm -
1 stop20h 53m
Wed 10/146:42 pm -
1 stop22h 48m
Deal found 9/9![Frontier logo]()
$291
This Frontier deal was found by Cheapflights users on 9/5. 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.
Tue 9/225:43 pm -
1 stop8h 09m
Sat 10/37:00 am -
1 stop9h 58m
Deal found 9/5![Frontier logo]()
$300
This Frontier deal was found by Cheapflights users on 9/5. 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.
Thu 10/156:25 pm -
1 stop7h 28m
Mon 10/197:20 am -
1 stop10h 40m
Deal found 9/5![Frontier logo]()
$314
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:43 pm -
1 stop24h 00m
Sun 10/43:55 pm -
1 stop25h 03m
Deal found 9/9![Frontier logo]()
$320
This CheapOair deal was found by Cheapflights users on 9/8. 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.
Fri 10/166:55 pm -
1 stop19h 41m
Sat 10/2410:39 am -
1 stop6h 51m
Deal found 9/8![Frontier logo]()
$323
This Frontier deal was found by Cheapflights users on 9/7. 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 11/76:33 pm -
1 stop7h 17m
Sun 11/811:20 am -
1 stop7h 11m
Deal found 9/7![Frontier logo]()
$335
This Frontier deal was found by Cheapflights users on 9/7. 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.
Tue 9/225:43 pm -
1 stop8h 09m
Sat 9/267:00 am -
1 stop9h 58m
Deal found 9/7![Frontier logo]()
$336
This Priceline deal was found by Cheapflights users on 9/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:33 pm -
1 stop7h 17m
Wed 11/187:25 pm -
1 stop23h 06m
Deal found 9/8![Frontier logo]()
$340
This CheapOair deal was found by Cheapflights users on 9/8. 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 10/15:43 pm -
1 stop20h 35m
Mon 10/53:55 pm -
1 stop25h 03m
Deal found 9/8![Frontier logo]()
$341
This Frontier deal was found by Cheapflights users on 9/7. 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.
Mon 11/26:54 pm -
1 stop6h 56m
Fri 11/611:20 am -
1 stop7h 36m
Deal found 9/7![Frontier logo]()
$350
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 September 9, 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 September 9, 2026.
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/61:35 pm -
2 stops10h 20m
Mon 11/97:30 am -
2 stops9h 05m
Deal found 9/8![Southwest logo]()
$409
This JetBlue deal was found by Cheapflights users on 9/5. 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.
Fri 1/2210:00 am -
1 stop7h 35m
Fri 1/292:59 pm -
1 stop7h 41m
Deal found 9/5![JetBlue logo]()
$552
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/911:20 am -
2 stops9h 40m
Tue 2/2312:15 pm -
2 stops10h 15m
Deal found 9/6![Southwest logo]()
$421
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:25 pm -
1 stop11h 40m
Sun 11/87:30 am -
2 stops9h 05m
Deal found 9/7![Southwest logo]()
$439
This JetBlue deal was found by Cheapflights users on 9/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2210:00 am -
1 stop7h 35m
Tue 2/92:59 pm -
1 stop7h 41m
Deal found 9/9![JetBlue logo]()
$589
This Southwest deal was found by Cheapflights users on 9/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2011:20 am -
1 stop10h 45m
Sun 1/245:45 am -
2 stops11h 00m
Deal found 9/6![Southwest logo]()
$506
This JetBlue deal was found by Cheapflights users on 9/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/2310:00 am -
1 stop7h 35m
Sat 1/302:59 pm -
1 stop7h 41m
Deal found 9/9![JetBlue logo]()
$589
This JetBlue deal was found by Cheapflights users on 9/6. 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.
Sun 9/277:00 am -
1 stop6h 37m
Wed 9/308:30 am -
1 stop7h 06m
Deal found 9/6![JetBlue logo]()
$616
This Southwest deal was found by Cheapflights users on 9/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:35 pm -
2 stops10h 35m
Mon 9/285:00 am -
2 stops11h 25m
Deal found 9/7![Southwest logo]()
$616
This JetBlue deal was found by Cheapflights users on 9/4. 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.
Tue 9/297:00 am -
1 stop8h 23m
Wed 9/306:01 am -
1 stop9h 35m
Deal found 9/4![JetBlue logo]()
$616
Last-minute flights from Islip to Luis Munoz Marin IntlDiscover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Luis Munoz Marin Intl. Data last updated September 9, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 9/6. 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.
Mon 9/215:43 pm -
1 stop8h 09m
Fri 9/257:00 am -
1 stop9h 58m
Deal found 9/6![Frontier logo]()
$356
This Frontier deal was found by Cheapflights users on 9/5. 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.
Tue 9/225:43 pm -
1 stop8h 09m
Sat 10/37:00 am -
1 stop9h 58m
Deal found 9/5![Frontier logo]()
$300
This Frontier deal was found by Cheapflights users on 9/7. 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.
Tue 9/225:43 pm -
1 stop8h 09m
Sat 9/267:00 am -
1 stop9h 58m
Deal found 9/7![Frontier logo]()
$336
This Priceline deal was found by Cheapflights users on 9/8. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:43 pm -
1 stop8h 09m
Sun 9/273:55 pm -
1 stop25h 03m
Deal found 9/8![Frontier logo]()
$366
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:43 pm -
1 stop24h 00m
Sun 10/43:55 pm -
1 stop25h 03m
Deal found 9/9![Frontier logo]()
$320
This CheapOair deal was found by Cheapflights users on 9/8. 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 10/15:43 pm -
1 stop20h 35m
Mon 10/53:55 pm -
1 stop25h 03m
Deal found 9/8![Frontier logo]()
$341
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:43 pm -
1 stop20h 53m
Wed 10/146:42 pm -
1 stop22h 48m
Deal found 9/9![Frontier logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:43 pm -
1 stop20h 53m
Wed 10/145:11 pm -
2 stops17h 06m
Deal found 9/9![Multiple Airlines logo]()
$368
This Frontier deal was found by Cheapflights users on 9/5. 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.
Thu 10/156:25 pm -
1 stop7h 28m
Mon 10/197:20 am -
1 stop10h 40m
Deal found 9/5![Frontier logo]()
$314
This CheapOair deal was found by Cheapflights users on 9/8. 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.
Fri 10/166:55 pm -
1 stop19h 41m
Sat 10/2410:39 am -
1 stop6h 51m
Deal found 9/8![Frontier logo]()
$323
This Frontier deal was found by Cheapflights users on 9/6. 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 10/176:25 pm -
1 stop7h 28m
Sat 10/2410:39 am -
1 stop6h 51m
Deal found 9/6![Frontier logo]()
$284
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 September 9, 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 September 9, 2026.
This Priceline deal was found by Cheapflights users on 9/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:25 pm -
1 stop7h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$142
This Frontier deal was found by Cheapflights users on 9/5. 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 9/235:43 pm -
1 stop8h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$158
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:55 pm -
1 stop14h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$168
This Frontier deal was found by Cheapflights users on 9/7. 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 10/306:54 pm -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$172
This Frontier deal was found by Cheapflights users on 9/7. 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.
Mon 11/26:54 pm -
1 stop6h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$178
This CheapOair deal was found by Cheapflights users on 9/7. 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.
Sun 11/86:33 pm -
1 stop7h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 9/7. 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 12/109:56 am -
1 stop15h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$204
This CheapOair deal was found by Cheapflights users on 9/8. 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 10/156:25 pm -
1 stop7h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$206
This Frontier deal was found by Cheapflights users on 9/5. 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.
Mon 9/145:43 pm -
1 stop8h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$208
This CheapOair deal was found by Cheapflights users on 9/7. 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 9/216:48 pm -
1 stop21h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:45 pm -
2 stops27h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$213
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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $284 (Frontier) |
One-way from | $142 (Priceline) |
Popular in | February |
Cheapest in | January |
Average price | $285 |
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 7,457,451 searches. Data last updated September 9, 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 Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Thu 10/22
6:25 pm-1:53 am
1 stop7h 28m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Mon 11/2
6:54 pm-2:50 am
1 stop6h 56m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$178
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Thu 11/5
6:33 pm-2:50 am
1 stop7h 17m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$228
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Mon 9/14
6:48 pm-4:45 pm
1 stop21h 57m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$267
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Wed 11/4
2:28 pm-12:10 am
1 stop8h 42m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$336
Quickest round-trip
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Tue 10/13
3:06 pm-9:56 pm
1 stop6h 50m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$373
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Fri 11/6
1:35 pm-12:55 am
2 stops10h 20m
San Juan Luis Munoz Marin Intl
Mon 11/9
7:30 am-3:35 pm
2 stops9h 05m
$409
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Tue 2/9
11:20 am-10:00 pm
2 stops9h 40m
San Juan Luis Munoz Marin Intl
Tue 2/23
12:15 pm-9:30 pm
2 stops10h 15m
$421
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Thu 11/5
12:25 pm-1:05 am
1 stop11h 40m
San Juan Luis Munoz Marin Intl
Sun 11/8
7:30 am-3:35 pm
2 stops9h 05m
$439
IslipSan Juan
ISP Islip Long Island - SJU San Juan Luis Munoz Marin Intl
ISPSJU
Islip Long Island
Sun 12/20
10:42 am-9:37 pm
1 stop9h 55m
San Juan Luis Munoz Marin Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$468
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 September.
| 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 September 9, 2026.
Read through reviews of airlines operating flights from Islip to San Juan Luis Munoz Marin Intl Airport, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - 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
Luquillo
Dorado
Rio Grande
Humacao
Bayamón
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Luis Munoz Marin Intl flight routes
Other flight options
Other flights from Islip
Popular flights
Alternative routes for Islip to Luis Munoz Marin Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Luis Munoz Marin Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Islip to Luis Munoz Marin Intl by cabin class
Find flights from Islip to Luis Munoz Marin Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Islip and Luis Munoz Marin Intl flights
Browse other Islip and Luis Munoz Marin Intl flight options. Last updated on September 9, 2026.
Other flights from Islip
Browse through other flights departing from Islip. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Islip to Luis Munoz Marin Intl
Discover the top airline 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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$796 | FlexibilityNo cancel fee | On-time63% |