$339+ Cheap flights from Islip, NY (ISP) to Saint Thomas Island (STT)
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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — STT
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Saint Thomas Island 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 Saint Thomas Island
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Best
Last-minute
One-way
Cheapest flights from Islip to Saint Thomas IslandExplore the most affordable flight options available from Islip to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
Explore the most affordable flight options available from Islip to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am -
1 stop6h 50m
Wed 11/113:20 pm -
1 stop6h 55m
Deal found 10/22![Southwest logo]()
$1,170
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:33 pm -
3 stops22h 40m
Wed 11/115:28 pm -
2 stops25h 03m
Deal found 10/22![Multiple Airlines logo]()
$1,529
This Southwest deal was found by Cheapflights users on 10/25. 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 12/256:30 am -
1 stop7h 00m
Fri 1/13:20 pm -
1 stop6h 50m
Deal found 10/25![Southwest logo]()
$1,615
This Southwest deal was found by Cheapflights users on 10/25. 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.
Sat 12/265:30 am -
1 stop7h 20m
Fri 1/13:20 pm -
1 stop6h 50m
Deal found 10/25![Southwest logo]()
$1,965
This Travelocity deal was found by Cheapflights users on 10/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:00 am -
2 stops11h 13m
Fri 1/18:00 am -
2 stops14h 50m
Deal found 10/25![Multiple Airlines logo]()
$2,833
This Expedia deal was found by Cheapflights users on 10/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2610:42 am -
2 stops24h 26m
Fri 1/12:22 pm -
2 stops20h 30m
Deal found 10/25![Multiple Airlines logo]()
$3,843
This Expedia deal was found by Cheapflights users on 10/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2610:42 am -
2 stops24h 26m
Fri 1/11:00 pm -
3 stops21h 52m
Deal found 10/25![JetBlue logo]()
$4,020
Best flights from Islip to Saint Thomas IslandDiscover carefully curated flight deals from Islip to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Islip to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This KAYAK deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/510:34 am -
2 stops26h 16m
Wed 2/102:50 pm -
2 stops21h 28m
Deal found 10/22![Breeze Airways logo]()
$968
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am -
1 stop6h 50m
Wed 11/113:20 pm -
1 stop6h 55m
Deal found 10/22![Southwest logo]()
$1,170
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:33 pm -
3 stops22h 40m
Wed 11/115:28 pm -
2 stops25h 03m
Deal found 10/22![Multiple Airlines logo]()
$1,529
This Southwest deal was found by Cheapflights users on 10/25. 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 12/256:30 am -
1 stop7h 00m
Fri 1/13:20 pm -
1 stop6h 50m
Deal found 10/25![Southwest logo]()
$1,615
This Southwest deal was found by Cheapflights users on 10/25. 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.
Sat 12/265:30 am -
1 stop7h 20m
Fri 1/13:20 pm -
1 stop6h 50m
Deal found 10/25![Southwest logo]()
$1,965
Last-minute flights from Islip to Saint Thomas IslandDiscover last-minute flight deals from Islip to Saint Thomas Island. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Saint Thomas Island. Data last updated October 27, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am -
1 stop6h 50m
Wed 11/113:20 pm -
1 stop6h 55m
Deal found 10/22![Southwest logo]()
$1,170
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:33 pm -
3 stops22h 40m
Wed 11/115:28 pm -
2 stops25h 03m
Deal found 10/22![Multiple Airlines logo]()
$1,529
One-way flights from Islip to Saint Thomas IslandSearch for one-way flight options from Islip to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from Islip to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 12/317:45 pm -
2 stops37h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Breeze Airways logo]()
$339
This Southwest deal was found by Cheapflights users on 10/25. 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 12/316:30 am -
1 stop7h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Southwest logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 12/3110:57 am -
3 stops20h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$611
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2212:40 pm -
3 stops20h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Breeze Airways logo]()
$672
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2111:13 am -
3 stops45h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Breeze Airways logo]()
$733
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:45 pm -
2 stops37h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Breeze Airways logo]()
$1,083
This KAYAK deal was found by Cheapflights users on 10/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/259:39 am -
2 stops23h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Breeze Airways logo]()
$1,138
Find flight deals from Islip to Saint Thomas Island
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Saint Thomas Island (STT). 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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $968 (KAYAK) |
One-way from | $339 (Kiwi.com) |
Popular in | December |
Cheapest in | May |
Average price | $570 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Saint Thomas Island 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 October 27, 2026.
Use the filters below to find and compare flights from Islip to Saint Thomas Island that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Thu 12/31
6:30 am-2:30 pm
1 stop7h 00m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$468
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Thu 12/31
10:57 am-8:43 am
3 stops20h 46m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$611
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Mon 12/21
11:13 am-10:05 am
3 stops45h 52m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$733
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Fri 2/5
10:34 am-1:50 pm
2 stops26h 16m
Saint Thomas Island Cyril E King
Wed 2/10
2:50 pm-11:18 am
2 stops21h 28m
$968
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Thu 12/24
7:45 pm-10:05 am
2 stops37h 20m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$1,083
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Fri 12/25
9:39 am-10:05 am
2 stops23h 26m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$1,138
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Sat 11/7
6:00 am-1:50 pm
1 stop6h 50m
Saint Thomas Island Cyril E King
Wed 11/11
3:20 pm-9:15 pm
1 stop6h 55m
$1,170
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Sat 11/7
6:33 pm-6:13 pm
3 stops22h 40m
Saint Thomas Island Cyril E King
Wed 11/11
5:28 pm-5:31 pm
2 stops25h 03m
$1,529
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Fri 12/25
6:30 am-2:30 pm
1 stop7h 00m
Saint Thomas Island Cyril E King
Fri 1/1
3:20 pm-9:10 pm
1 stop6h 50m
$1,615
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Sat 12/26
5:30 am-1:50 pm
1 stop7h 20m
Saint Thomas Island Cyril E King
Fri 1/1
3:20 pm-9:10 pm
1 stop6h 50m
$1,965
Sorted by cheapest first
Compare providers for flights from Islip to Saint Thomas Island
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 Saint Thomas Island in October.
| 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-Saint Thomas Island 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-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Saint Thomas Island flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Saint Thomas Island 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-Saint Thomas Island 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 Saint Thomas Island
Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Islip with our price prediction graph.
ISP-STT
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.
Related info for your journey
Find useful and relevant information for your journey from Islip to Saint Thomas Island. 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 Saint Thomas Island?
Book flights to Saint Thomas Island if you plan to visit one of these locationsSt. John
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