Cheapest return flights from Philadelphia to St. Thomas in December from $398

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

Return flights

21 Dec - 10 Jan Spirit Airlines
22 Dec - 10 Jan Spirit Airlines
23 Dec - 12 Jan Spirit Airlines
22 Dec - 12 Jan Spirit Airlines
23 Dec - 10 Jan Spirit Airlines
21 Dec - 28 Dec Spirit Airlines
26 Dec - 12 Jan Spirit Airlines
26 Dec - 10 Jan Spirit Airlines
22 Dec - 28 Dec Spirit Airlines
23 Dec - 28 Dec Spirit Airlines
27 Dec - 12 Jan Spirit Airlines
27 Dec - 10 Jan Spirit Airlines
14 Dec - 28 Dec Spirit Airlines
18 Dec - 28 Dec Spirit Airlines
26 Dec - 28 Dec Spirit Airlines
11 Dec - 14 Dec Spirit Airlines
21 Dec - 01 Jan Spirit Airlines
13 Dec - 28 Dec Spirit Airlines
27 Dec - 28 Dec Spirit Airlines

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

Powered by

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.

Book a cheap hotel in St. Thomas

Cheap car rent in St. Thomas

Feel free to contact us with any feedback or request another flight research.