Cheapest one-way flights from West Palm Beach to Islip in September from $91
AirHint found the following cheapest one-way flights from West Palm Beach (PBI) to Islip (ISP) in September 2025 (see full year).
One-Way flights
| 25 Sep | jetBlue | direct | |
| 26 Sep | Southwest Airlines | ||
| 26 Sep | Southwest Airlines | direct |
Also check the deals for return flights from West Palm Beach to Islip in September.
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.
