Cheapest return flights from Boston to St. Thomas in December from 307€

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

Return flights

12 Dec - 16 Dec United
14 Dec - 15 Dec Spirit Airlines
14 Dec - 24 Dec Spirit Airlines
11 Dec - 15 Dec Spirit Airlines
13 Dec - 16 Dec United
11 Dec - 24 Dec Spirit Airlines
13 Dec - 15 Dec Spirit Airlines
14 Dec - 22 Dec Spirit Airlines
14 Dec - 21 Dec Spirit Airlines
14 Dec - 26 Dec Spirit Airlines
31 Dec - 18 Jan Spirit Airlines
30 Dec - 18 Jan Spirit Airlines
29 Dec - 18 Jan Spirit Airlines
29 Dec - 05 Jan Spirit Airlines
14 Dec - 02 Jan Spirit Airlines
17 Dec - 02 Jan Spirit Airlines
13 Dec - 02 Jan Spirit Airlines
31 Dec - 02 Jan Spirit Airlines
30 Dec - 02 Jan Spirit Airlines
18 Dec - 02 Jan Spirit Airlines

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

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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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