Cheapest return BWI–STT flights, May

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

Return flights

26 May - 02 Jun Frontier Airlines
24 May - 31 May Frontier Airlines
22 May - 26 May Frontier Airlines
28 May - 01 Jun Frontier Airlines
21 May - 26 May Frontier Airlines
23 May - 27 May Frontier Airlines
24 May - 31 May Southwest Airlines direct
21 May - 25 May Frontier Airlines
22 May - 25 May Frontier Airlines
23 May - 25 May Frontier Airlines

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

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