AirHint found the following cheapest one-way flights from Islip (ISP) to Charleston (CHS) in January 2026 (see full year).
One-Way flights
| 12 Jan | Breeze Airways | direct | |
| 09 Jan | Breeze Airways | direct | |
| 08 Jan | Breeze Airways | ||
| 11 Jan | Breeze Airways | ||
| 10 Jan | Southwest Airlines | ||
| 13 Jan | Southwest Airlines | ||
| 14 Jan | Southwest Airlines |
Also check the deals for return flights from Islip to Charleston in January.
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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