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Cheap flights from Islip, New York to Saint Lucia from $666

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 Lucia departing on 3/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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JetBlue Logo
9:45 am - 2:17 pm
ISP
-
UVF
28h 32m
2 stops
$666JetBlue
Sun, Mar 29

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Saint Lucia 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 9, 2026.
Use the filters below to find and compare flights from Islip, New York to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipCastries

ISP - UVF

ISPUVF

Islip Long Island

Sun 3/29

9:45 am-2:17 pm

2 stops28h 32m

$666

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Saint Lucia from

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

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 airline that flies from Islip Long Island to Saint Lucia?

JetBlue is the most popular carrier operating from Islip Long Island to Saint Lucia

What airlines fly to Saint Lucia?

JetBlue, American Airlines and United Airlines are the top three most popular airlines that fly to Saint Lucia from Islip, New York according to our data. JetBlue is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Saint Lucia. Keep in mind that there are 5 different airlines that fly to Saint Lucia on a routine basis, so you have a few additional options to choose from.

Cheap Islip, New York to Saint Lucia flight deals and tips

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

Fastest flight time

25h 23m

Direct flights

None
The fastest flight from Islip, New York to Saint Lucia takes 25h 23m
There are no direct flights from Islip, New York to Saint Lucia. There are no popular flight routes from Islip, New York to Saint Lucia.
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  • When did momondo last update prices for flights from Islip Long Island Airport to Saint Lucia?

    Prices for flights from Islip Long Island Airport to Saint Lucia are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Saint Lucia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Saint Lucia.

  • What documentation or ID do you need to fly to Saint Lucia?

    The necessary travel and health documents for your Saint Lucia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Saint Lucia. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Islip to Saint Lucia on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to Saint Lucia.

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

Of course. momondo tracks the price of Islip to Saint Lucia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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