Cheapest return flights from Philadelphia to St. Thomas in December from $313

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

Return flights

04 Dec - 08 Dec Spirit Airlines
12 Dec - 14 Dec Spirit Airlines
02 Dec - 07 Dec Spirit Airlines
01 Dec - 05 Dec Spirit Airlines
02 Dec - 08 Dec Spirit Airlines
15 Dec - 29 Dec Spirit Airlines
15 Dec - 30 Dec Spirit Airlines
15 Dec - 01 Jan Spirit Airlines
30 Dec - 01 Jan Spirit Airlines
22 Dec - 06 Jan Spirit Airlines
25 Dec - 29 Dec Spirit Airlines
25 Dec - 05 Jan Spirit Airlines
25 Dec - 30 Dec Spirit Airlines
28 Dec - 29 Dec Spirit Airlines
31 Dec - 04 Jan Spirit Airlines
28 Dec - 01 Jan jetBlue
25 Dec - 01 Jan Spirit Airlines
15 Dec - 02 Jan Spirit Airlines
30 Dec - 03 Jan Spirit Airlines
24 Dec - 01 Jan Spirit Airlines

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

Skyscanner

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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