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Cheap flights from Islip, New York to Saint Thomas Island from $224

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Saint Thomas Island departing on 4/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:34 pm - 2:31 pm
ISP
-
STT
21h 57m
1 stop
Multiple Airlines Logo
3:36 pm - 1:31 pm
STT
-
ISP
22h 55m
2 stops
$376Multiple Airlines
Mon, Mar 2 - Thu, Mar 5
Multiple Airlines Logo
8:39 pm - 1:26 pm
ISP
-
STT
16h 47m
1 stop
Multiple Airlines Logo
2:36 pm - 9:13 am
STT
-
ISP
18h 37m
1 stop
$378Multiple Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
3:34 pm - 2:31 pm
ISP
-
STT
21h 57m
1 stop
Multiple Airlines Logo
3:36 pm - 12:47 pm
STT
-
ISP
22h 11m
1 stop
$392Multiple Airlines
Mon, Mar 2 - Thu, Mar 5
Multiple Airlines Logo
8:39 pm - 3:28 pm
ISP
-
STT
18h 49m
2 stops
Multiple Airlines Logo
2:36 pm - 9:13 am
STT
-
ISP
18h 37m
1 stop
$411Multiple Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
1:42 pm - 2:31 pm
ISP
-
STT
23h 49m
1 stop
Multiple Airlines Logo
2:36 pm - 11:10 am
STT
-
ISP
20h 34m
2 stops
$439Multiple Airlines
Fri, Mar 6 - Tue, Mar 10
Multiple Airlines Logo
4:34 pm - 1:26 pm
ISP
-
STT
20h 52m
1 stop
Multiple Airlines Logo
2:36 pm - 12:47 pm
STT
-
ISP
22h 11m
1 stop
$461Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
4:34 pm - 1:26 pm
ISP
-
STT
20h 52m
1 stop
Multiple Airlines Logo
4:35 pm - 9:48 am
STT
-
ISP
41h 13m
2 stops
$473Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
JetBlue Logo
8:25 pm - 3:06 pm
ISP
-
STT
42h 41m
2 stops
JetBlue Logo
4:01 pm - 8:55 am
STT
-
ISP
16h 54m
2 stops
$725JetBlue
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
3:34 pm - 2:31 pm
ISP
-
STT
21h 57m
1 stop
Multiple Airlines Logo
2:36 pm - 6:44 pm
STT
-
ISP
28h 08m
2 stops
$747Multiple Airlines
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
1:22 pm - 2:35 pm
ISP
-
STT
24h 13m
2 stops
Multiple Airlines Logo
2:22 pm - 10:02 am
STT
-
ISP
20h 40m
2 stops
$785Multiple Airlines
Mon, Mar 2 - Thu, Mar 5

Southwest flights from Islip, New York to Saint Thomas Island

Our best Southwest deals on Islip, New York to Saint Thomas Island flight tickets
Southwest
Mar 5
ISP6:00 amIslip Long Island
7h 00m
1 stop
STT2:00 pmSaint Thomas Island Cyril E King
Mar 9
STT3:05 pmSaint Thomas Island Cyril E King
8h 50m
1 stop
ISP11:55 pmIslip Long Island
$820
Southwest
Mar 5
ISP6:00 amIslip Long Island
8h 20m
2 stops
STT3:20 pmSaint Thomas Island Cyril E King
Mar 9
STT1:50 pmSaint Thomas Island Cyril E King
10h 05m
2 stops
ISP11:55 pmIslip Long Island
$850
Southwest
Mar 6
ISP6:00 amIslip Long Island
7h 00m
1 stop
STT2:00 pmSaint Thomas Island Cyril E King
Mar 10
STT3:10 pmSaint Thomas Island Cyril E King
7h 40m
1 stop
ISP10:50 pmIslip Long Island
$905

JetBlue flights from Islip, New York to Saint Thomas Island

Our best JetBlue deals on Islip, New York to Saint Thomas Island flight tickets
JetBlue
Mar 19
ISP8:25 pmIslip Long Island
42h 41m
2 stops
STT3:06 pmSaint Thomas Island Cyril E King
Mar 26
STT4:01 pmSaint Thomas Island Cyril E King
16h 54m
2 stops
ISP8:55 amIslip Long Island
$725
JetBlue
Feb 24
ISP9:39 amIslip Long Island
27h 56m
2 stops
STT2:35 pmSaint Thomas Island Cyril E King
Feb 26
STT3:30 pmSaint Thomas Island Cyril E King
43h 32m
2 stops
ISP10:02 amIslip Long Island
$868
JetBlue
Mar 2
ISP1:22 pmIslip Long Island
18h 23m
2 stops
STT8:45 amSaint Thomas Island Cyril E King
Mar 5
STT2:15 pmSaint Thomas Island Cyril E King
19h 32m
3 stops
ISP8:47 amIslip Long Island
$1,029

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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, momondo users made 832,500 searches. Data last updated February 21, 2026.
Use the filters below to find and compare flights from Islip, New York to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Mon 3/2

3:34 pm-2:31 pm

1 stop21h 57m

Saint Thomas Island Cyril E King

Thu 3/5

3:36 pm-1:31 pm

2 stops22h 55m

$376

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 4/11

8:39 pm-1:26 pm

1 stop16h 47m

Saint Thomas Island Cyril E King

Sat 4/18

2:36 pm-9:13 am

1 stop18h 37m

$378

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Mon 3/2

3:34 pm-2:31 pm

1 stop21h 57m

Saint Thomas Island Cyril E King

Thu 3/5

3:36 pm-12:47 pm

1 stop22h 11m

$392

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Sat 4/11

8:39 pm-3:28 pm

2 stops18h 49m

Saint Thomas Island Cyril E King

Sat 4/18

2:36 pm-9:13 am

1 stop18h 37m

$411

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Fri 3/6

1:42 pm-2:31 pm

1 stop23h 49m

Saint Thomas Island Cyril E King

Tue 3/10

2:36 pm-11:10 am

2 stops20h 34m

$439

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 3/19

4:34 pm-1:26 pm

1 stop20h 52m

Saint Thomas Island Cyril E King

Thu 3/26

2:36 pm-12:47 pm

1 stop22h 11m

$461

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 3/19

4:34 pm-1:26 pm

1 stop20h 52m

Saint Thomas Island Cyril E King

Thu 3/26

4:35 pm-9:48 am

2 stops41h 13m

$473

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 3/19

8:25 pm-3:06 pm

2 stops42h 41m

Saint Thomas Island Cyril E King

Thu 3/26

4:01 pm-8:55 am

2 stops16h 54m

$725

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Thu 3/5

3:34 pm-2:31 pm

1 stop21h 57m

Saint Thomas Island Cyril E King

Mon 3/9

2:36 pm-6:44 pm

2 stops28h 08m

$747

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Mon 3/2

1:22 pm-2:35 pm

2 stops24h 13m

Saint Thomas Island Cyril E King

Thu 3/5

2:22 pm-10:02 am

2 stops20h 40m

$785

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Islip, New York to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Islip, New York is on a Monday. momondo users have found tickets for Monday departures for as low as $396. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to Saint Thomas Island for around $519.

When to book flights from Islip, New York to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Saint Thomas Island (ISP to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Saint Thomas Island

Fastest flight time

20h 24m

Direct flights

None
The fastest flight from Islip, New York to Saint Thomas Island takes 20h 24m
There are no direct flights from Islip, New York to Saint Thomas Island. There are no popular flight routes from Islip, New York to Saint Thomas Island.
Search flight deals

  • How far is Islip Long Island to Saint Thomas Island Cyril E King by plane?

    Islip Long Island and Saint Thomas Island Cyril E King are 1621.8 mi apart from one another. Flights usually cover this in 20h 24m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Islip Long Island Airport to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Islip Long Island Airport to Saint Thomas Island Cyril E King Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Saint Thomas Island Cyril E King Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents you'll need for your trip to Saint Thomas Island Cyril E King Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Thomas Island Cyril E King Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Saint Thomas Island?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to Saint Thomas Island. momondo saves you time and could save you money on your trip.

Can I find flights from Islip to Saint Thomas Island with flexible booking policies on momondo?

Flights from Islip to Saint Thomas Island with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Islip to Saint Thomas Island?

Once you have performed a search for Islip to Saint Thomas Island flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Islip to Saint Thomas Island right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Saint Thomas Island from Islip. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Saint Thomas Island trip

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