Cheapest return flights from West Palm Beach to Islip in December from $48

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

Return flights

11 Dec - 16 Dec Frontier Airlines direct
11 Dec - 14 Dec Frontier Airlines direct
16 Dec - 18 Dec Frontier Airlines direct
16 Dec - 20 Dec Frontier Airlines direct
13 Dec - 16 Dec Frontier Airlines direct
11 Dec - 18 Dec Frontier Airlines direct
16 Dec - 19 Dec Frontier Airlines direct
11 Dec - 13 Dec Frontier Airlines direct
25 Dec - 04 Jan Frontier Airlines direct
19 Dec - 05 Jan Frontier Airlines direct
27 Dec - 03 Jan Frontier Airlines direct
28 Dec - 03 Jan Frontier Airlines direct
29 Dec - 04 Jan Frontier Airlines direct
18 Dec - 21 Dec Frontier Airlines direct
25 Dec - 03 Jan Frontier Airlines direct
13 Dec - 20 Dec Frontier Airlines direct
24 Dec - 04 Jan Frontier Airlines direct
31 Dec - 05 Jan Frontier Airlines direct
27 Dec - 02 Jan Frontier Airlines direct
26 Dec - 02 Jan Frontier Airlines direct

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

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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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