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Saint Thomas Island

$348+ Cheap flights from Islip, NY (ISP) to Saint Thomas Island (STT)

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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — STT
Sep 14 — Sep 211
Mon 9/14
Mon 9/21
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 August 15, 2026.

This FlightHub deal was found by Cheapflights users on 8/14. 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 stops44h 13m
Deal found 8/14$728
This Southwest deal was found by Cheapflights users on 8/11. 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 9/256:45 am -
1 stop7h 05m
Thu 10/12:50 pm -
2 stops8h 45m
Deal found 8/11$788

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 August 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$728
(FlightHub)

One-way from

$348
(Southwest)

Popular in

December

Cheapest in

May

Average price

$507
Provider with most accurate pricing for Islip Long Island-Saint Thomas Island Cyril E King flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Saint Thomas Island Cyril E King flights.
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From Islip Long Island to Saint Thomas Island Cyril E King
Search Deals
One-way flight from Islip Long Island to Saint Thomas Island Cyril E King
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($28 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 August 2026
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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 August 15, 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 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-12:53 pm

2 stops44h 13m

$728
Quickest round-trip

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Fri 9/25

6:45 am-1:50 pm

1 stop7h 05m

Saint Thomas Island Cyril E King

Thu 10/1

2:50 pm-11:35 pm

2 stops8h 45m

$788
Cheapest one-way

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Sat 8/22

6:00 am-1:20 pm

1 stop7h 20m

$348

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Fri 8/21

7:09 pm-10:14 am

2 stops15h 05m

$430

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Sat 8/29

7:09 pm-10:14 am

2 stops15h 05m

$472

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Fri 8/28

7:09 pm-10:14 am

2 stops15h 05m

$478
Quickest one-way

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Thu 8/27

6:45 am-1:50 pm

1 stop7h 05m

$508

IslipSaint Thomas Island

ISP Islip Long Island - STT Saint Thomas Island Cyril E King

ISPSTT

Islip Long Island

Sun 8/23

7:49 pm-2:35 pm

3 stops42h 46m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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 August.
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.

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 and Southwest can get you from Islip, New York to Saint Thomas Island in just under 7h 05m. Your travel time can differ by up to 26h 49m. The distance from Islip, New York to Saint Thomas Island is about 1623 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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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