Cheapest return flights from West Palm Beach to Islip in May from $80

Best time to book flights for West Palm Beach (PBI) to Islip (ISP) flights at AirHint

AirHint found the following cheapest return flights from West Palm Beach (PBI) to Islip (ISP) in May 2025 (see full year).

Return flights

17 May - 18 May Frontier Airlines direct
20 May - 01 Jun Frontier Airlines direct
29 May - 03 Jun Frontier Airlines direct
10 May - 11 May Frontier Airlines direct
13 May - 15 May Frontier Airlines direct
08 May - 15 May Frontier Airlines direct
16 May - 18 May Southwest Airlines direct
13 May - 21 May Southwest Airlines direct
15 May - 22 May Frontier Airlines direct
06 May - 08 May Frontier Airlines direct
16 May - 19 May jetBlue direct
03 May - 04 May Frontier Airlines direct

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

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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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