Title: Cheap flights from Islip to St. Thomas from $234 (ISP to STT) - Expedia.com ![](https://images.trvl-media.com/place/6140138/57cc4b04-8c90-4cee-a0ef-1a113eaebf69.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6140138/57cc4b04-8c90-4cee-a0ef-1a113eaebf69.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $234 Cheap Flights from Islip (ISP) to St. Thomas (STT) [View $234 flight on Tue, Apr 14, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:ISP,to:STT,departure:4/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:234.00&airProductToken=AQphCi4I15wBEgQyNDk4GMh8IMxwKM-oigMw76mKAzhGQABYAWoDV0dBcgdGTEFWSzJGCi8I15wBEgQzMjEzGMxwIPKcASihqooDMNCrigM4RkABWAFqA1dHQXIHRkxBVksyRhIMCAEQARgBKgJXTjIAGAEiBAgBEAEoAigDKAQwAQ) ## Popular airlines from MacArthur Airport (ISP) to Cyril E. King Airport (STT) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:STT,departure:4/1/2026TANYT&leg2=from:STT,to:ISP,departure:4/8/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:STT,departure:4/1/2026TANYT&leg2=from:STT,to:ISP,departure:4/8/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Islip to St. Thomas (ISP-STT) Prices were available within the past 7 days and start at $234 for one-way flights and $580 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, Apr 15 - Wed, Apr 22 ISP Islip STT St. Thomas $580 Roundtrip found 9 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:4/15/2026TANYT&leg2=from:STT,to:ISP,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:579.84&airProductToken=AQphCi4I15wBEgQyNDk4GMh8IMxwKO-zigMwj7WKAzhHQABYAWoDV0dBcgdHTEFWUDJGCi8I15wBEgQzMjEzGMxwIPKcASjBtYoDMPC2igM4R0ABWAFqA1dHQXIHR0xBVlAyRgphCi8I15wBEgQ0NTI2GPKcASDMcCiChosDMM-HiwM4R0AAWAFqA1dHQXIHR0xBVlAyRgouCNecARIEMjc5NhjMcCDIfCjgiIsDMICKiwM4R0ABWAFqA1dHQXIHR0xBVlAyRhIKCAEQARgBKgJXThgBIgQIARABKAIoAygEMAE) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, Apr 15 - Wed, Apr 22 ISP Islip STT St. Thomas $620 Roundtrip found 9 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:4/15/2026TANYT&leg2=from:STT,to:ISP,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:619.84&airProductToken=AQphCi4I15wBEgQyNDk4GMh8IMxwKO-zigMwj7WKAzhHQABYAWoDV0dBcgdHTEFWUDJGCi8I15wBEgQzMjEzGMxwIPKcASjBtYoDMPC2igM4R0ABWAFqA1dHQXIHR0xBVlAyRhIKCAEQARgBKgJXThgBIgQIARABKAIoAygEMAE) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Tue, Jul 7 - Mon, Jul 13 ISP Islip STT St. Thomas $640 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:7/7/2026TANYT&leg2=from:STT,to:ISP,departure:7/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:639.84&airProductToken=AQpgCi4I15wBEgQ0NjQ2GMh8IMxwKLHZkQMwzNqRAzhVQABYAWoDV0dBcgdVTEFWUDJGCi4I15wBEgMyNDcYzHAg8pwBKLXbkQMw6dyRAzhVQAFYAWoDV0dBcgdVTEFWUDJGCpABCi8I15wBEgQzOTk1GPKcASDMcCjloJIDMJ6ikgM4UEAAWAFqA1dHQXIHUExBVVAyRgotCNecARIDMTYwGMxwIMFFKM-kkgMw26WSAzhQQAFYAWoDV0dBcgdQTEFVUDJGCi4I15wBEgQ0ODE2GMFFIMh8KKqokgMw9aiSAzhQQAFYAWoDV0dBcgdQTEFVUDJGEgoIARABGAEqAldOGAEiBAgBEAEoAigDKAQwAQ) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, Apr 15 - Wed, Apr 22 ISP Islip STT St. Thomas $660 Roundtrip found 9 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:4/15/2026TANYT&leg2=from:STT,to:ISP,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:659.84&airProductToken=AQphCi4I15wBEgQyNDk4GMh8IMxwKO-zigMwj7WKAzhHQABYAWoDUExVcgdHTEFWUDRGCi8I15wBEgQzMjEzGMxwIPKcASjBtYoDMPC2igM4R0ABWAFqA1BMVXIHR0xBVlA0RgphCi8I15wBEgQ0NTI2GPKcASDMcCiChosDMM-HiwM4R0AAWAFqA1BMVXIHR0xBVlA0RgouCNecARIEMjc5NhjMcCDIfCjgiIsDMICKiwM4R0ABWAFqA1BMVXIHR0xBVlA0RhIKCAEQARgBKgJXThgBIgQIARABKAIoAygEMAE) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Tue, Jul 7 - Mon, Jul 13 ISP Islip STT St. Thomas $680 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:7/7/2026TANYT&leg2=from:STT,to:ISP,departure:7/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:679.84&airProductToken=AQpgCi4I15wBEgQ0NjQ2GMh8IMxwKLHZkQMwzNqRAzhVQABYAWoDV0dBcgdVTEFWUDJGCi4I15wBEgMyNDcYzHAg8pwBKLXbkQMw6dyRAzhVQAFYAWoDV0dBcgdVTEFWUDJGCmEKLwjXnAESBDM5OTUY8pwBIMxwKOWgkgMwnqKSAzhDQABYAWoDV0dBcgdDTEE3UDJGCi4I15wBEgQ0ODQwGMxwIMh8KNejkgMw_KSSAzhDQAFYAWoDV0dBcgdDTEE3UDJGEgoIARABGAEqAldOGAEiBAgBEAEoAigDKAQwAQ) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Tue, Jul 7 - Mon, Jul 13 ISP Islip STT St. Thomas $686 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:7/7/2026TANYT&leg2=from:STT,to:ISP,departure:7/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:685.44&airProductToken=AQpgCi4I15wBEgQ0NjQ2GMh8IMxwKLHZkQMwzNqRAzhVQABYAWoDV0dBcgdVTEFWUDJGCi4I15wBEgMyNDcYzHAg8pwBKLXbkQMw6dyRAzhVQAFYAWoDV0dBcgdVTEFWUDJGEgoIARABGAEqAldOGAEiBAgBEAEoAigDKAQwAQ) ![JetBlue Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/b6.gif) Wed, Apr 15 - Wed, Apr 22 ISP Islip STT St. Thomas $686 Roundtrip found 9 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:4/15/2026TANYT&leg2=from:STT,to:ISP,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:685.96&airProductToken=AQqOAQosCMJsEgM1MTMYyHwg5VoowLqKAzD1u4oDOExAAFgBagJETnIIT0k0UVVPTDEKLQjCbBIDNTUzGOVaILKiASiAv4oDMJjAigM4TEABWAFqAkROcghaSTdBVUVMMQovCMJsEgQxMDM2GLKiASDynAEotsGKAzDawYoDOExAAVgBagJETnIIUEkzQVVFTDESCggBEAEYASoCQjYYASIECAEQASgCKAQoBjAB) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, Apr 15 - Wed, Apr 22 ISP Islip STT St. Thomas $700 Roundtrip found 9 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:4/15/2026TANYT&leg2=from:STT,to:ISP,departure:4/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:699.84&airProductToken=AQphCi4I15wBEgQyNDk4GMh8IMxwKO-zigMwj7WKAzhHQABYAWoDQU5ZcgdHTEFWUDZNCi8I15wBEgQzMjEzGMxwIPKcASjBtYoDMPC2igM4R0ABWAFqA0FOWXIHR0xBVlA2TRIKCAEQARgBKgJXThgBIgQIARABKAIoBCgGMAE) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Wed, Mar 25 - Wed, Apr 1 ISP Islip STT St. Thomas $710 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:3/25/2026TANYT&leg2=from:STT,to:ISP,departure:4/1/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:709.84&airProductToken=AQpgCi0I15wBEgM0MTcYyHwgzHAooseIAzDMyIgDOFBAAFgBagNXR0FyB1BMQTdQMkYKLwjXnAESBDI2MTQYzHAg8pwBKN3JiAMwjMuIAzhQQAFYAWoDV0dBcgdQTEE3UDJGCmEKLwjXnAESBDM4NjcY8pwBIMxwKM6ZiQMwoJuJAzhDQABYAWoDV0dBcgdDTEE3UDJGCi4I15wBEgQzODU2GMxwIMh8KMCciQMw4J2JAzhDQAFYAWoDV0dBcgdDTEE3UDJGEgoIARABGAEqAldOGAEiBAgBEAEoAigDKAQwAQ) ![Southwest Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/wn.gif) Tue, Jul 7 - Mon, Jul 13 ISP Islip STT St. Thomas $720 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:ISP,to:STT,departure:7/7/2026TANYT&leg2=from:STT,to:ISP,departure:7/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:719.84&airProductToken=AQpgCi4I15wBEgQ0NjQ2GMh8IMxwKLHZkQMwzNqRAzhVQABYAWoDUExVcgdVTEFWUDRGCi4I15wBEgMyNDcYzHAg8pwBKLXbkQMw6dyRAzhVQAFYAWoDUExVcgdVTEFWUDRGCpABCi8I15wBEgQzOTk1GPKcASDMcCjloJIDMJ6ikgM4UEAAWAFqA1BMVXIHUExBVVA0RgotCNecARIDMTYwGMxwIMFFKM-kkgMw26WSAzhQQAFYAWoDUExVcgdQTEFVUDRGCi4I15wBEgQ0ODE2GMFFIMh8KKqokgMw9aiSAzhQQAFYAWoDUExVcgdQTEFVUDRGEgoIARABGAEqAldOGAEiBAgBEAEoAigDKAQwAQ) ## Frequently asked questions ### How much does a flight from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King) cost? ### What is the cheapest month to fly from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### Which airlines fly direct from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### What is the cheapest airline that flies from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### How do I find cheap flights from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### What is the best time to fly from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### What is the earliest flight from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### How long does it take to fly from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### Can you fly business or first class from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ### How do I earn miles on a Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King) flight with Expedia? ### Is it cheaper to buy a plane ticket from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King) at the last minute? ### Is it cheaper to book a Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King) flight and hotel package? ### Can I cancel or change the date of my flight from Islip, NY (ISP-MacArthur) to St. Thomas (STT-Cyril E. King)? ## Travel information | Origin airport | MacArthur | | ------------------- | ----------------------------------- | | Destination airport | Cyril E. King | | Airlines serving | JetBlue Airways, Southwest Airlines | | Roundtrip price | $580 | | Distance | 1624 mi | ## Book with confidence # Islip to St. Thomas Flights The cheapest times to fly from Islip to St. Thomas On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to St. Thomas are during the month of April. You can find some of the cheapest flights from Islip to St. Thomas with Expedia's search tool and vast selection of airlines. The best time to book a flight from Islip to St. Thomas Sunday is one of the best days to book for cheap flights from Islip to St. Thomas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Islip to St. Thomas Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to St. Thomas in 2026\. You can also book with separate airlines for your outbound and return journeys, from $234 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to St. Thomas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Islip to St. Thomas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Other - [Hotels near Lindbergh Bay ](https://www.expedia.com/Lindbergh-Bay-Hotels.0-l6243563-0.Travel-Guide-Filter-Hotels) - [Hotels near Lindberg Beach ](https://www.expedia.com/Lindberg-Beach-Hotels.0-l553248635980612247-0.Travel-Guide-Filter-Hotels) - [Vacation Homes in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Private-Vacation-Homes.d553248635997993060-aaPrivateVacationHomes.Travel-Guide-Accommodation) - [Apartments in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Apartments.d553248635997993060-aaApartments.Travel-Guide-Accommodation) - [Charlotte Amalie Hotels ](https://www.expedia.com/Destinations-In-Charlotte-Amalie.d553248635997993060.Hotel-Destinations) - [Cottages in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Cottages.d553248635997993060-aaCottages.Travel-Guide-Accommodation) - [Guest Houses in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Guest-Houses.d553248635997993060-aaGuestHouses.Travel-Guide-Accommodation) - [Condo Rentals in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Condos.d553248635997993060-aaCondos.Travel-Guide-Accommodation) - [Hostels in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Hostels.d553248635997993060-aaHostels.Travel-Guide-Accommodation) - [Resorts in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Resorts.d553248635997993060-aaResorts.Travel-Guide-Accommodation) - [Estate Lindbergh Bay Hotels ](https://www.expedia.com/Estate-Lindbergh-Bay-Hotels.d553248635975865801.Travel-Guide-Hotels) - [Gay friendly Hotels in Charlotte Amalie ](https://www.expedia.com/Destinations-In-Charlotte-Amalie-LGBT-Welcoming-Hotel.0-0-d553248635997993060-tLGBTWelcomingHotel.Hotel-Filter-Destinations) - [Aparthotels in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Apart-Hotels.d553248635997993060-aaApartHotels.Travel-Guide-Accommodation) - [B&B in Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie-Bed-And-Breakfast.d553248635997993060-aaBedAndBreakfast.Travel-Guide-Accommodation) - [All-Inclusive Resorts in Charlotte Amalie ](https://www.expedia.com/Destinations-In-Charlotte-Amalie-All-Inclusive-Hotel.0-0-d553248635997993060-tAllinclusiveHotel.Hotel-Filter-Destinations) - [Flights from Estate Lindbergh Bay ](https://www.expedia.com/lp/flights/553248635975865801/flights-from-estate-lindbergh-bay) - [Flights to Charlotte Amalie ](https://www.expedia.com/Destinations-In-Charlotte-Amalie.d553248635997993060.Flight-Destinations) - [Flights to Estate Lindbergh Bay ](https://www.expedia.com/Cheap-Flights-To-Estate-Lindbergh-Bay.d553248635975865801.Travel-Guide-Flights) - [Flights from Charlotte Amalie ](https://www.expedia.com/lp/flights/553248635997993060/flights-from-charlotte-amalie) - [Lindbergh Bay ](https://www.expedia.com/Lindbergh-Bay-St-Thomas.d6243563.Vacation-Attraction) - [Visit Charlotte Amalie ](https://www.expedia.com/Charlotte-Amalie.dx553248635997993060) - [Charlotte Amalie Vacations ](https://www.expedia.com/Charlotte-Amalie.d553248635997993060.Destination-Travel-Guides) - [Car rentals near Lindbergh Bay ](https://www.expedia.com/Car-Rentals-In-Lindbergh-Bay.d6243563.Car-Rental-Guide) - [Car rentals near Estate Lindbergh Bay ](https://www.expedia.com/Car-Rentals-In-Estate-Lindbergh-Bay.d553248635975865801.Car-Rental-Guide) - [Things to do in Charlotte Amalie ](https://www.expedia.com/Things-To-Do-In-Charlotte-Amalie.d553248635997993060.Travel-Guide-Activities) \*Available to One Key members.