AirHint found the following cheapest return flights from Islip (ISP) to West Palm Beach (PBI) in April 2026 (see full year).
Return flights
| 13 Apr - 20 Apr | jetBlue | direct | |
| 15 Apr - 22 Apr | jetBlue | ||
| 10 Apr - 17 Apr | jetBlue | ||
| 01 Apr - 07 Apr | Breeze Airways | ||
| 09 Apr - 16 Apr | jetBlue | ||
| 05 Apr - 11 Apr | Southwest Airlines |
Also check the deals for one-way flights from Islip to West Palm Beach in April.
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