Cheapest return flights from West Palm Beach to Islip in July from $155
AirHint found the following cheapest return flights from West Palm Beach (PBI) to Islip (ISP) in July 2025 (see full year).
Return flights
| 31 Jul - 04 Aug | Frontier Airlines | ||
| 03 Jul - 08 Jul | Frontier Airlines | direct | |
| 30 Jul - 04 Aug | jetBlue | ||
| 30 Jul - 04 Aug | Southwest Airlines | direct | |
| 31 Jul - 04 Aug | Southwest Airlines | direct |
Also check the deals for one-way flights from West Palm Beach to Islip in July.
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.
