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Saint Thomas Island

$640+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — STT
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap flight deals from Islip to Saint Thomas Island

Cheapest flights from Islip to Saint Thomas Island
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 March 10, 2026.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/101:00 pm
ISP
-
STT
2 stops46h 45m
Multiple Airlines
Fri 7/242:25 pm
STT
-
ISP
1 stop18h 43m
Multiple Airlines
Deal found 3/7$640
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/103:07 pm
ISP
-
STT
2 stops24h 35m
JetBlue
Fri 7/244:37 pm
STT
-
ISP
2 stops16h 37m
JetBlue
Deal found 3/9$943
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:30 pm
ISP
-
STT
1 stop17h 56m
Multiple Airlines
Sat 4/118:00 am
STT
-
ISP
2 stops10h 44m
Multiple Airlines
Deal found 3/7$976
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:25 pm
ISP
-
STT
2 stops42h 41m
JetBlue
Mon 3/234:01 pm
STT
-
ISP
2 stops40h 54m
JetBlue
Deal found 3/7$1,001
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/194:34 pm
ISP
-
STT
1 stop20h 52m
Multiple Airlines
Mon 3/234:35 pm
STT
-
ISP
2 stops26h 09m
Multiple Airlines
Deal found 3/7$1,023
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/41:07 pm
ISP
-
STT
2 stops24h 58m
JetBlue
Sat 4/1112:55 pm
STT
-
ISP
2 stops23h 15m
JetBlue
Deal found 3/7$1,313
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/196:00 am
ISP
-
STT
1 stop7h 00m
Southwest
Mon 3/231:50 pm
STT
-
ISP
1 stop8h 50m
Southwest
Deal found 3/7$1,405

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$640
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$392
Provider with most accurate pricing for Islip Long Island-Saint Thomas Island Cyril E King flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Saint Thomas Island Cyril E King flights.
Search Deals
From Islip Long Island to Saint Thomas Island Cyril E King
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 2,558,603 searches. Data last updated March 10, 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

Price

Cheapest round-trip

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Fri 7/10

1:00 pm-11:45 am

2 stops46h 45m

Saint Thomas Island Cyril E King

Fri 7/24

2:25 pm-9:08 am

1 stop18h 43m

$640

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Fri 7/10

3:07 pm-3:42 pm

2 stops24h 35m

Saint Thomas Island Cyril E King

Fri 7/24

4:37 pm-9:14 am

2 stops16h 37m

$943
Quickest round-trip

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 4/4

7:30 pm-1:26 pm

1 stop17h 56m

Saint Thomas Island Cyril E King

Sat 4/11

8:00 am-6:44 pm

2 stops10h 44m

$976

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 4/4

1:07 pm-2:05 pm

2 stops24h 58m

Saint Thomas Island Cyril E King

Sat 4/11

12:55 pm-12:10 pm

2 stops23h 15m

$1,313

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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 Saint Thomas Island

What is the cheapest month to book a flight from Islip, New York to Saint Thomas Island?

Currently, July is the cheapest month in which you can book a flight from Islip, New York to Saint Thomas Island (average of $111). Flying from Islip, New York to Saint Thomas Island in November is currently the most expensive (average of $246). 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.

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.

  • How long is the flight from Islip, New York to Saint Thomas Island?

    JetBlue can get you from Islip, New York to Saint Thomas Island in just under 24h 35m. Your travel time can differ by up to . The distance from Islip, New York to Saint Thomas Island is about 1623 mi.

  • Can I find deals for flights from Islip to Saint Thomas Island that include hotel bookings?

    Yes. In addition to deals on Islip to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Saint Thomas Island?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Saint Thomas Island.

  • Can I find deals for business class flights from Islip to Saint Thomas Island?

    Yes. Cheapflights offers flight deals from Islip to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Saint Thomas Island?

    Currently, July is the cheapest month in which you can book a flight from Islip, New York to Saint Thomas Island (average of $111). Flying from Islip, New York to Saint Thomas Island in November is currently the most expensive (average of $246). 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.

See more FAQs

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

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