AirHint found the following cheapest return flights from St. Louis (STL) to Bergamo (BGY) in December 2025 (see full year).
Return flights
| 27 Dec - 17 Jan | Frontier Airlines | ||
| 25 Dec - 09 Jan | Frontier Airlines | ||
| 26 Dec - 09 Jan | KLM | ||
| 19 Dec - 09 Jan | Frontier Airlines | ||
| 20 Dec - 27 Dec | Aer Lingus | ||
| 18 Dec - 02 Jan | Frontier Airlines |
Also check the deals for one-way flights from St. Louis to Bergamo in December.
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