Cheapest return flights from Chicago to St. Thomas in March from $451

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

Return flights

10 Mar - 17 Mar Frontier Airlines
17 Mar - 24 Mar Frontier Airlines
18 Mar - 25 Mar Delta
01 Mar - 08 Mar Delta
21 Mar - 28 Mar Frontier Airlines
19 Mar - 23 Mar Frontier Airlines
26 Mar - 02 Apr Delta
28 Mar - 31 Mar Southwest Airlines
27 Mar - 03 Apr Frontier Airlines
20 Mar - 28 Mar Delta

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

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