Cheapest return flights from Philadelphia to St. Thomas in December from $291

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

Return flights

06 Dec - 07 Dec Spirit Airlines
06 Dec - 15 Dec Spirit Airlines
11 Dec - 15 Dec Spirit Airlines
06 Dec - 13 Dec Spirit Airlines
11 Dec - 13 Dec Spirit Airlines
01 Dec - 05 Dec Spirit Airlines
01 Dec - 07 Dec Spirit Airlines
01 Dec - 15 Dec Spirit Airlines
01 Dec - 13 Dec Spirit Airlines
29 Dec - 09 Jan Spirit Airlines
25 Dec - 31 Dec Spirit Airlines
22 Dec - 09 Jan Spirit Airlines
31 Dec - 04 Jan Spirit Airlines
20 Dec - 09 Jan Spirit Airlines
19 Dec - 09 Jan Spirit Airlines
29 Dec - 03 Jan Sun Country Airlines
26 Dec - 09 Jan Spirit Airlines
29 Dec - 04 Jan Spirit Airlines
18 Dec - 04 Jan Spirit Airlines
26 Dec - 04 Jan Sun Country 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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