Cheapest return flights from Ontario to Nassau in December from $540

AirHint found the following cheapest return flights from Ontario (ONT) to Nassau (NAS) in December 2025 (see full year).

Return flights

15 Dec - 25 Dec Southwest Airlines
14 Dec - 24 Dec Southwest Airlines
16 Dec - 24 Dec Southwest Airlines
29 Dec - 05 Jan Southwest Airlines
30 Dec - 03 Jan Southwest Airlines
26 Dec - 04 Jan Southwest Airlines
29 Dec - 03 Jan Southwest Airlines

Also check the deals for one-way flights from Ontario to Nassau in December.

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