Cheapest return flights from Boston to St. Thomas in May from $242

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

Return flights

11 May - 14 May Spirit Airlines
04 May - 14 May Spirit Airlines
18 May - 21 May Spirit Airlines
04 May - 07 May Spirit Airlines
04 May - 18 May Spirit Airlines
04 May - 15 May Spirit Airlines
11 May - 18 May Spirit Airlines
11 May - 28 May Spirit Airlines
11 May - 15 May Spirit Airlines
18 May - 28 May Spirit Airlines
18 May - 01 Jun Spirit Airlines
28 May - 01 Jun Spirit Airlines
14 May - 01 Jun Spirit Airlines
15 May - 01 Jun Spirit Airlines
29 May - 01 Jun jetBlue
25 May - 01 Jun Spirit Airlines
18 May - 04 Jun Spirit Airlines
28 May - 04 Jun Spirit Airlines
15 May - 04 Jun Spirit Airlines
25 May - 04 Jun Spirit Airlines

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

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