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Cheap flights from Islip, New York to Basseterre from $635

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 Basseterre departing on 6/3. 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 Basseterre

Cheap round-trip flights

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Multiple Airlines Logo
ISP
-
SKB
1735 mimulti-stop
Multiple Airlines Logo
SKB
-
ISP
1735 mimulti-stop
Multiple Airlines

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Basseterre 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 January 8, 2026.
Use the filters below to find and compare flights from Islip, New York to Basseterre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipBasseterre

ISP - SKB

ISPSKB

Islip Long Island

Wed 6/3

12:30 pm-2:43 pm

2 stops26h 13m

$635

IslipBasseterre

ISP - SKB

ISPSKB

Islip Long Island

Thu 6/4

12:35 pm-10:30 am

2 stops45h 55m

$657

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Basseterre from

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

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 Basseterre?

The cheapest day to depart on your flight to Basseterre is on a Tuesday when prices can be found for as low as $453. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Basseterre on Monday is $770.

When to book flights from Islip, New York to Basseterre

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

Cheap Islip, New York to Basseterre (ISP to SKB) flight deals and tips

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

Fastest flight time

46h 21m

Direct flights

None
The fastest flight from Islip, New York to Basseterre takes 46h 21m
There are no direct flights from Islip, New York to Basseterre. There are no popular flight routes from Islip, New York to Basseterre.
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  • How far is Islip Long Island to Basseterre Robert Bradshaw Intl by plane?

    The straight-line distance from Islip Long Island to Basseterre Robert Bradshaw Intl is 1734.2 mi. Typically, this will take 46h 21m by plane in normal conditions.

  • When did momondo last update prices for flights from Islip Long Island Airport to Basseterre Robert Bradshaw Intl Airport?

    Prices for flights from Islip Long Island Airport to Basseterre Robert Bradshaw Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to Basseterre Robert Bradshaw Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Basseterre Robert Bradshaw Intl Airport.

  • What documentation or ID do you need to fly to Basseterre Robert Bradshaw Intl Airport?

    The required travel and health documents for your Basseterre Robert Bradshaw Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Basseterre Robert Bradshaw Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Islip to Basseterre for you.

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

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

How can momondo help me find flights from Islip to Basseterre?

momondo provides multiple filters to help you find the best flight to Basseterre from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Islip to Basseterre 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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