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Saint Thomas Island

$346+ Cheap flights from Islip (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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — STT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 11, 2025.

Round-trip from

$1,348
(Kiwi.com)

One-way from

$346
(Expedia)

Popular in

December

Cheapest in

May

Average price

$356
From Islip Long Island to Saint Thomas Island Cyril E King
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One-way flight from Islip Long Island to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1811:40 amISP - STT
1 stop27h 17mMultiple Airlines
Thu 9/2510:49 amSTT - ISP
2 stops23h 51mMultiple Airlines
Deal found 9/11$584
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 12/256:00 amISP - STT
1 stop29h 28mMultiple Airlines
Wed 12/311:33 pmSTT - ISP
1 stop10h 54mMultiple Airlines
Deal found 9/10$1,348
This Expedia deal was found by Cheapflights users on 9/10. 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.
Thu 12/257:40 pmISP - STT
2 stops17h 57mJetBlue
Wed 12/313:32 pmSTT - ISP
2 stops18h 04mJetBlue
Deal found 9/10$1,568
This Expedia deal was found by Cheapflights users on 9/10. 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.
Fri 12/267:40 pmISP - STT
2 stops17h 17mJetBlue
Sat 1/35:28 pmSTT - ISP
2 stops16h 08mJetBlue
Deal found 9/10$2,093

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 September 11, 2025.
Use the filters below to find and compare flights from Islip to Saint Thomas Island that are best for you.

Fly from

Islip

Fly to

Saint Thomas Island

Route

Depart

Return

Price

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 12/25

6:00 am-12:28 pm

1 stop29h 28m

Saint Thomas Island Cyril E King

Wed 12/31

1:33 pm-11:27 pm

1 stop10h 54m

$1,348

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 12/25

7:40 pm-2:37 pm

2 stops17h 57m

Saint Thomas Island Cyril E King

Wed 12/31

3:32 pm-8:36 am

2 stops18h 04m

$1,568

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Fri 12/26

7:40 pm-1:57 pm

2 stops17h 17m

Saint Thomas Island Cyril E King

Sat 1/3

5:28 pm-8:36 am

2 stops16h 08m

$2,093

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 2/7

1:35 pm-8:45 am

2 stops18h 10m

$346

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 2/7

5:45 am-1:20 pm

1 stop6h 35m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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 to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from Islip to Saint Thomas Island (average of $433). Flying from Islip to Saint Thomas Island in June is currently the most expensive (average of $645). 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 to Saint Thomas Island?

    JetBlue can get you from Islip to Saint Thomas Island in just under 17h 57m. Your travel time can differ by up to . Islip and Saint Thomas Island are separated by a distance of 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 to Saint Thomas Island?

    Currently, September is the cheapest month in which you can book a flight from Islip to Saint Thomas Island (average of $433). Flying from Islip to Saint Thomas Island in June is currently the most expensive (average of $645). 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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