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
$ 264
02 Dec
- 18 Dec
Spirit Airlines
$ 277
04 Dec
- 08 Dec
Spirit Airlines
$ 373
22 Dec
- 07 Jan
Spirit Airlines
$ 386
23 Dec
- 07 Jan
Spirit Airlines
$ 408
11 Dec
- 14 Dec
Spirit Airlines
$ 417
22 Dec
- 26 Dec
Spirit Airlines
$ 426
21 Dec
- 07 Jan
Spirit Airlines
$ 438
28 Dec
- 07 Jan
Spirit Airlines
$ 446
18 Dec
- 07 Jan
Spirit Airlines
$ 446
19 Dec
- 07 Jan
Spirit Airlines
$ 473
20 Dec
- 07 Jan
Spirit Airlines
$ 476
18 Dec
- 22 Dec
Spirit Airlines
$ 492
01 Dec
- 07 Dec
Spirit Airlines
$ 499
18 Dec
- 17 Jan
Spirit Airlines
$ 519
18 Dec
- 16 Jan
Frontier Airlines
$ 542
28 Dec
- 16 Jan
Spirit Airlines
$ 557
20 Dec
- 28 Dec
Spirit Airlines
$ 563
20 Dec
- 29 Dec
Spirit Airlines
$ 572
Also check the deals for one-way flights from Philadelphia to St. Thomas in December .
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