Cheapest return flights from Philadelphia to St. Thomas in December from $264

AirHint found the following cheapest return flights from Philadelphia (PHL) to St. Thomas (STT) in December 2025 (see full year).

Return flights

02 Dec - 06 Dec Spirit Airlines
02 Dec - 18 Dec Spirit Airlines
04 Dec - 08 Dec Spirit Airlines
22 Dec - 07 Jan Spirit Airlines
23 Dec - 07 Jan Spirit Airlines
11 Dec - 14 Dec Spirit Airlines
22 Dec - 26 Dec Spirit Airlines
21 Dec - 07 Jan Spirit Airlines
28 Dec - 07 Jan Spirit Airlines
18 Dec - 07 Jan Spirit Airlines
19 Dec - 07 Jan Spirit Airlines
20 Dec - 07 Jan Spirit Airlines
18 Dec - 22 Dec Spirit Airlines
01 Dec - 07 Dec Spirit Airlines
18 Dec - 17 Jan Spirit Airlines
18 Dec - 16 Jan Frontier Airlines
28 Dec - 16 Jan Spirit Airlines
20 Dec - 28 Dec Spirit Airlines
20 Dec - 29 Dec Spirit Airlines

Also check the deals for one-way flights from Philadelphia to St. Thomas in December.

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