AirHint found the following cheapest return flights from Boston (BOS) to St. Thomas (STT) in January 2026 (see full year).

Return flights

15 Jan - 23 Jan	jetBlue
29 Jan - 07 Feb	jetBlue
01 Jan - 09 Jan	jetBlue
25 Jan - 01 Feb	jetBlue
04 Jan - 09 Jan	jetBlue
01 Jan - 09 Jan	Delta	direct
29 Jan - 05 Feb	Spirit Airlines
25 Jan - 05 Feb	Spirit Airlines
25 Jan - 07 Feb	Spirit Airlines
22 Jan - 05 Feb	Spirit Airlines
22 Jan - 07 Feb	Spirit Airlines
08 Jan - 23 Jan	Spirit Airlines
22 Jan - 23 Jan	Spirit Airlines
04 Jan - 09 Jan	Delta	direct
29 Jan - 01 Feb	Spirit Airlines
22 Jan - 01 Feb	Spirit Airlines
08 Jan - 16 Jan	jetBlue
09 Jan - 17 Jan	Spirit Airlines
09 Jan - 23 Jan	Spirit Airlines
22 Jan - 05 Feb	Delta	direct

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

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 January from $234

Return flights