AirHint found the following cheapest return flights from St. Louis (STL) to Rome (FCO) in May 2026 (see full year).
Return flights
| 10 May - 23 May | Air Canada | ||
| 13 May - 25 May | British Airways | ||
| 21 May - 02 Jun | United | ||
| 18 May - 13 Jun | Air Canada | ||
| 21 May - 06 Jun | Air Canada | ||
| 31 May - 07 Jun | Lufthansa | ||
| 23 May - 01 Jun | Air Canada |
Also check the deals for one-way flights from St. Louis to Rome in May.
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