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

Return flights

31 Dec - 14 Jan	Delta	direct
31 Dec - 06 Jan	jetBlue
11 Dec - 15 Dec	Spirit Airlines
30 Dec - 06 Jan	jetBlue
03 Dec - 08 Dec	Spirit Airlines
18 Dec - 23 Dec	Frontier Airlines
30 Dec - 06 Jan	Delta	direct
19 Dec - 24 Dec	Spirit Airlines
20 Dec - 31 Dec	Spirit Airlines
20 Dec - 23 Dec	Spirit Airlines
19 Dec - 23 Dec	Spirit Airlines
12 Dec - 14 Dec	Spirit Airlines
20 Dec - 28 Dec	Spirit Airlines
31 Dec - 05 Jan	Spirit Airlines
01 Dec - 04 Dec	jetBlue
27 Dec - 01 Jan	Spirit Airlines
23 Dec - 03 Jan	jetBlue
23 Dec - 02 Jan	jetBlue
31 Dec - 05 Jan	Delta	direct
23 Dec - 02 Jan	Delta	direct

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

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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Cheapest return flights from Boston to St. Thomas in December from $229

Return flights