AirHint found the following cheapest return flights from St. Louis (STL) to Frankfurt (FRA) in April 2026 (see full year).
Return flights
| 29 Apr - 06 May | Lufthansa | direct | |
| 14 Apr - 21 Apr | Lufthansa | ||
| 19 Apr - 26 Apr | Lufthansa | direct | |
| 24 Apr - 01 May | Lufthansa | direct | |
| 04 Apr - 11 Apr | Lufthansa | ||
| 09 Apr - 16 Apr | Lufthansa |
Also check the deals for one-way flights from St. Louis to Frankfurt in April.
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