Cheapest return flights from Chicago to St. Thomas in April from $271

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

Return flights

21 Apr - 29 Apr Frontier Airlines
28 Apr - 02 May Frontier Airlines
20 Apr - 25 Apr Frontier Airlines
25 Apr - 02 May Frontier Airlines
15 Apr - 22 Apr Frontier Airlines
08 Apr - 16 Apr Spirit Airlines
16 Apr - 21 Apr Frontier Airlines
08 Apr - 15 Apr Spirit Airlines
28 Apr - 19 May Spirit Airlines
08 Apr - 29 Apr Spirit Airlines
08 Apr - 14 Apr Spirit Airlines
10 Apr - 14 Apr Frontier Airlines
25 Apr - 29 Apr Spirit Airlines
25 Apr - 15 May Spirit Airlines
21 Apr - 02 May Spirit Airlines
28 Apr - 15 May Spirit Airlines
20 Apr - 02 May Spirit Airlines
23 Apr - 02 May Spirit Airlines
15 Apr - 02 May Spirit Airlines
22 Apr - 02 May Spirit Airlines

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

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