Cheapest return flights from St. Thomas to San Juan in December from 252€

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

Return flights

12 Dec - 14 Dec jetBlue
28 Dec - 15 Jan Spirit Airlines
28 Dec - 16 Jan Spirit Airlines
28 Dec - 18 Jan Spirit Airlines
28 Dec - 11 Jan Spirit Airlines
28 Dec - 29 Dec Spirit Airlines
15 Dec - 18 Dec Cape Air direct
28 Dec - 09 Jan Spirit Airlines
28 Dec - 08 Jan Spirit Airlines
28 Dec - 12 Jan Spirit Airlines
16 Dec - 19 Dec Cape Air direct
07 Dec - 07 Dec Cape Air direct
21 Dec - 22 Dec Spirit Airlines
21 Dec - 23 Dec Spirit Airlines
21 Dec - 25 Dec Spirit Airlines
21 Dec - 11 Jan Spirit Airlines
06 Dec - 22 Dec Spirit Airlines
06 Dec - 19 Dec Spirit Airlines
21 Dec - 09 Jan Spirit Airlines
21 Dec - 08 Jan Spirit Airlines

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

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