AirHint found the following cheapest return flights from St. Louis (STL) to St. Thomas (STT) in January 2026 (see full year).
Return flights
| 24 Jan - 29 Jan | Frontier Airlines | ||
| 29 Jan - 29 Jan | United | ||
| 02 Jan - 09 Jan | Frontier Airlines | ||
| 26 Jan - 09 Feb | United |
Also check the deals for one-way flights from St. Louis to St. Thomas in January.
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