Cheapest return flights from Chicago to St. Thomas in December from 341€

AirHint found the following cheapest return flights from Chicago (MDW) to St. Thomas (STT) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec Frontier Airlines
07 Dec - 14 Dec Frontier Airlines
11 Dec - 15 Dec Frontier Airlines
14 Dec - 18 Dec Frontier Airlines
18 Dec - 25 Dec Frontier Airlines
18 Dec - 24 Dec Frontier Airlines
04 Dec - 11 Dec Frontier Airlines
24 Dec - 31 Dec Frontier Airlines
23 Dec - 30 Dec Delta
24 Dec - 28 Dec Frontier Airlines
29 Dec - 03 Jan Delta

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

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