Find Cheap Flights to United States

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Islip Long Island to United States

(Round-trip)
Depart: Tue Oct 10 2017 Return: Wed Oct 11 2017 Trip spans 2 days
Frontier
Frontier
ISP
MIA
3h 23m
nonstop
MIA
ISP
3h 07m
nonstop
Depart: Sat Oct 14 2017 Return: Tue Oct 17 2017 Trip spans 4 days
Frontier
Frontier
ISP
MIA
3h 23m
nonstop
MIA
ISP
3h 07m
nonstop
Depart: Mon Sep 4 2017 Return: Thu Sep 7 2017 Trip spans 4 days
Frontier
Frontier
ISP
MCO
2h 45m
nonstop
MCO
ISP
2h 40m
nonstop
Depart: Wed Nov 1 2017 Return: Fri Nov 3 2017 Trip spans 3 days
Frontier
Frontier
ISP
MIA
3h 13m
nonstop
MIA
ISP
3h 02m
nonstop
Depart: Thu Sep 28 2017 Return: Tue Oct 3 2017 Trip spans 6 days
Frontier
Frontier
ISP
MCO
2h 45m
nonstop
MCO
ISP
2h 40m
nonstop
Depart: Sat Oct 21 2017 Return: Sat Oct 28 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
ATL
4h 31m
1 stop
ATL
ISP
6h 36m
1 stop
Depart: Tue Oct 3 2017 Return: Tue Oct 10 2017 Trip spans 8 days
Frontier
Frontier
ISP
MCO
2h 45m
nonstop
MCO
ISP
2h 40m
nonstop
Depart: Tue Oct 10 2017 Return: Tue Oct 24 2017 Trip spans 15 days
Frontier
Frontier
ISP
PBI
2h 52m
nonstop
PBI
ISP
2h 40m
nonstop
Depart: Sun Jan 14 2018 Return: Fri Jan 19 2018 Trip spans 6 days
Major Airline
Major Airline
ISP
MCO
2h 50m
nonstop
MCO
ISP
2h 30m
nonstop
Depart: Tue Oct 17 2017 Return: Tue Oct 24 2017 Trip spans 8 days
Frontier
Frontier
ISP
TPA
2h 55m
nonstop
TPA
ISP
2h 45m
nonstop
Depart: Wed Oct 25 2017 Return: Tue Oct 31 2017 Trip spans 7 days
Frontier
Frontier
ISP
RSW
3h 42m
nonstop
RSW
ISP
3h 06m
nonstop
Depart: Tue Nov 7 2017 Return: Tue Nov 14 2017 Trip spans 8 days
Frontier
Frontier
ISP
PBI
2h 52m
nonstop
PBI
ISP
2h 40m
nonstop
Depart: Tue Nov 7 2017 Return: Tue Nov 14 2017 Trip spans 8 days
Frontier
Frontier
ISP
TPA
3h 00m
nonstop
TPA
ISP
2h 40m
nonstop
Depart: Mon Nov 6 2017 Return: Fri Nov 10 2017 Trip spans 5 days
Frontier
Frontier
ISP
MIA
3h 13m
nonstop
MIA
ISP
3h 02m
nonstop
Depart: Mon Sep 18 2017 Return: Wed Sep 20 2017 Trip spans 3 days
Frontier
Frontier
ISP
MCO
2h 45m
nonstop
MCO
ISP
2h 40m
nonstop
Depart: Wed Nov 8 2017 Return: Sat Nov 11 2017 Trip spans 4 days
American Airlines
American Airlines
ISP
CHS
4h 05m
1 stop
CHS
ISP
6h 35m
1 stop
Depart: Wed Oct 11 2017 Return: Tue Oct 17 2017 Trip spans 7 days
Frontier
Frontier
ISP
RSW
3h 42m
nonstop
RSW
ISP
3h 06m
nonstop
Depart: Tue Nov 14 2017 Return: Mon Nov 20 2017 Trip spans 7 days
American Airlines
American Airlines
ISP
CHS
6h 53m
1 stop
CHS
ISP
7h 23m
2 stops
Depart: Thu Oct 12 2017 Return: Wed Oct 18 2017 Trip spans 7 days
Frontier
Frontier
ISP
MCO
2h 45m
nonstop
MCO
ISP
2h 40m
nonstop
Depart: Sun Oct 29 2017 Return: Sun Nov 5 2017 Trip spans 8 days
American Airlines
American Airlines
ISP
FLL
4h 42m
1 stop
FLL
ISP
5h 35m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Islip
$54
Destination

West Palm Beach
$77
Charleston
$254
Atlanta
$208
Orlando
$57
Fort Lauderdale
$271
Tampa
$77
Miami
$54
Fort Myers
$77