Cheapest return flights from Islip to West Palm Beach in April from $288

AirHint found the following cheapest return flights from Islip (ISP) to West Palm Beach (PBI) in April 2026 (see full year).

Return flights

01 Apr - 08 Apr Breeze Airways
01 Apr - 08 Apr Frontier Airlines direct
01 Apr - 07 Apr Breeze Airways
01 Apr - 07 Apr Frontier Airlines direct
01 Apr - 06 Apr Frontier Airlines direct
01 Apr - 13 Apr Frontier Airlines direct
06 Apr - 11 Apr Breeze Airways
06 Apr - 11 Apr jetBlue direct
03 Apr - 11 Apr Frontier Airlines direct
06 Apr - 13 Apr Frontier Airlines direct

Also check the deals for one-way flights from Islip to West Palm Beach in April.

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