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

Return flights

22 Mar - 31 Mar	jetBlue
11 Mar - 18 Mar	jetBlue
09 Mar - 15 Mar	jetBlue
12 Mar - 18 Mar	American Airlines
06 Mar - 12 Mar	American Airlines
08 Mar - 15 Mar	jetBlue
13 Mar - 18 Mar	American Airlines
22 Mar - 31 Mar	Delta	direct
24 Mar - 31 Mar	Spirit Airlines
24 Mar - 13 Apr	Spirit Airlines
06 Mar - 18 Mar	Spirit Airlines
24 Mar - 12 Apr	Spirit Airlines

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

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 March from $224

Return flights