Cheap flights from Islip to Simpson Bay from $746

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Islip to Simpson Bay departing on 1/19. 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 to Simpson Bay

Cheap round-trip flights

JetBlue Logo
1:35 pm - 3:28 pmISP-SXM
24h 53m2 stops
JetBlue Logo
2:45 pm - 12:40 pmSXM-ISP
22h 55m2 stops
$746JetBlue
Find Deal
Mon, Jan 19 - Thu, Jan 22
JetBlue Logo
12:05 pm - 1:37 pmISP-SXM
24h 32m2 stops
JetBlue Logo
2:45 pm - 12:40 pmSXM-ISP
22h 55m2 stops
$857JetBlue
Find Deal
Sun, Jan 18 - Thu, Jan 22

JetBlue flights from Islip to Simpson Bay

Our best JetBlue deals on Islip to Simpson Bay flight tickets
JetBlue
Jan 19
ISP1:35 pmIslip Long Island
24h 53m
2 stops
SXM3:28 pmSimpson Bay Princess Juliana
Jan 22
SXM2:45 pmSimpson Bay Princess Juliana
22h 55m
2 stops
ISP12:40 pmIslip Long Island
JetBlue
Jan 18
ISP12:05 pmIslip Long Island
24h 32m
2 stops
SXM1:37 pmSimpson Bay Princess Juliana
Jan 22
SXM2:45 pmSimpson Bay Princess Juliana
22h 55m
2 stops
ISP12:40 pmIslip Long Island

momondo Fare Finder

 
Customize your flight search to find flights from Islip to Simpson Bay 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 August 29, 2025.
Use the filters below to find and compare flights from Islip to Simpson Bay that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSimpson Bay

ISP - SXM

ISPSXM

Islip Long Island

Mon 1/19

1:35 pm-3:28 pm

2 stops24h 53m

Simpson Bay Princess Juliana

Thu 1/22

2:45 pm-12:40 pm

2 stops22h 55m

$746

IslipSimpson Bay

ISP - SXM

ISPSXM

Islip Long Island

Sun 1/18

12:05 pm-1:37 pm

2 stops24h 32m

Simpson Bay Princess Juliana

Thu 1/22

2:45 pm-12:40 pm

2 stops22h 55m

$857

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Simpson Bay from

How to get the cheapest flight ticket from Islip to Simpson Bay

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 Simpson Bay?

Our data shows that Monday is the least expensive day to fly to Simpson Bay. Tickets to fly out on this day can be as low as $468. Flights from Islip to Simpson Bay on a Thursday will generally be more expensive and average around $566. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Simpson Bay?

According to our data, the cheapest time of day to fly to Simpson Bay is in the afternoon. momondo users have found flights departing from Islip to Simpson Bay in the afternoon for as low as $344. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Simpson Bay is in the evening when prices are around $530.

When to book flights from Islip to Simpson Bay

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

Cheap Islip to Simpson Bay (ISP to SXM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to Simpson Bay

Direct flights

None
There are no direct flights from Islip to Simpson Bay. There are no popular flight routes from Islip to Simpson Bay.
  • How far is Islip Long Island to Simpson Bay Princess Juliana by plane?

    A flight from Islip Long Island to Simpson Bay Princess Juliana will travel around 1677.4 mi. Typically, this will take 24h 32m by plane in normal conditions.

  • When did momondo last update prices for flights from Islip Long Island Airport to Simpson Bay Princess Juliana Airport?

    Prices for flights from Islip Long Island Airport to Simpson Bay Princess Juliana Airport were last updated today.

  • How old do you have to be to fly from Islip Long Island Airport to Simpson Bay Princess Juliana 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 Simpson Bay Princess Juliana Airport.

  • What documentation or ID do you need to fly to Simpson Bay Princess Juliana Airport?

    The travel and health documents you'll need for your trip to Simpson Bay Princess Juliana 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 Simpson Bay Princess Juliana Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Simpson Bay?

Book flights to Simpson Bay if you plan to visit one of these locations
Philipsburg

Why use momondo?

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

Finding the right flight to Simpson Bay from Islip is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Simpson Bay quick and easy, saving you time and money.

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

Flights from Islip to Simpson Bay 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 Simpson Bay?

momondo helps you find the best flight between Islip and Simpson Bay by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Islip to Simpson Bay 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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Wed 9/3
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