Cheap flights from Islip from $39

Our data suggests that currently, the cheapest flights from Islip are being offered by JetBlue, Avelo Airlines, and Frontier. For example, JetBlue flights from Islip to West Palm Beach, start at $44, Avelo Airlines flights from Islip to Concord cost around $50, and Frontier flights from Islip to Sarasota are around $60.

Currently, the cheapest flight from Islip found by our users is for $39 to Charleston. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $170 to travel from Islip to Charleston.

Boston, Orlando Airport and Orlando are currently the destinations served most frequently from Islip, with 4, 3 and 3 flights per day on average, respectively.

Airlines including Southwest, Frontier and JetBlue frequently fly from Islip. You can view other airlines by performing a quick search in the form above.

Prices for flights from Islip Long Island Airport refresh daily.

The number of operators available for flights from Islip Long Island Airport is 8 as of August 2025.

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.

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