AirHint found the following cheapest return flights from St. Louis (STL) to Milan (LIN) in September 2026 (see full year).
Return flights
| 13 Sep - 30 Sep | British Airways | ||
| 13 Sep - 29 Sep | Lufthansa | ||
| 18 Sep - 24 Sep | Lufthansa | ||
| 17 Sep - 25 Sep | British Airways |
Also check the deals for one-way flights from St. Louis to Milan in September.
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