Cheapest one-way flights from Islip to Charleston in September from $39

AirHint found the following cheapest one-way flights from Islip (ISP) to Charleston (CHS) in September 2025 (see full year).

One-Way flights

15 Sep Breeze Airways direct
26 Sep Breeze Airways direct
12 Sep Breeze Airways direct

Also check the deals for return flights from Islip to Charleston in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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