$735+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — STT
Oct 12 — Oct 191
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
Cheapest
Best
Last-minute
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 September 12, 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 September 12, 2026.
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
2 stops33h 54m
Sun 10/254:40 pm -
2 stops20h 58m
Deal found 9/9![JetBlue logo]()
$735
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops10h 20m
Sat 9/2612:48 pm -
2 stops10h 34m
Deal found 9/7![Multiple Airlines logo]()
$1,592
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 September 12, 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 September 12, 2026.
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
2 stops33h 54m
Sun 10/254:40 pm -
2 stops20h 58m
Deal found 9/9![JetBlue logo]()
$735
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops10h 20m
Sat 9/2612:48 pm -
2 stops10h 34m
Deal found 9/7![Multiple Airlines logo]()
$1,592
Last-minute flights from Islip to Saint Thomas IslandDiscover last-minute flight deals from Islip to Saint Thomas Island. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Saint Thomas Island. Data last updated September 12, 2026 and is based on user searches.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops10h 20m
Sat 9/2612:48 pm -
2 stops10h 34m
Deal found 9/7![Multiple Airlines logo]()
$1,592
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
2 stops33h 54m
Sun 10/254:40 pm -
2 stops20h 58m
Deal found 9/9![JetBlue logo]()
$735
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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $735 (FlightHub) |
Popular in | December |
Cheapest in | May |
Average price | $516 |
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 September 12, 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
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Sun 10/18
6:00 am-3:54 pm
2 stops33h 54m
Saint Thomas Island Cyril E King
Sun 10/25
4:40 pm-1:38 pm
2 stops20h 58m
$735
Quickest round-trip
IslipSaint Thomas Island
ISP Islip Long Island - STT Saint Thomas Island Cyril E King
ISPSTT
Islip Long Island
Tue 9/22
7:00 am-5:20 pm
2 stops10h 20m
Saint Thomas Island Cyril E King
Sat 9/26
12:48 pm-11:22 pm
2 stops10h 34m
$1,592
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 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-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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