Cheapest return flights from St. Louis to Frankfurt in April from $760

AirHint found the following cheapest return flights from St. Louis (STL) to Frankfurt (FRA) in April 2026 (see full year).

Return flights

17 Apr - 27 Apr Frontier Airlines
17 Apr - 26 Apr Frontier Airlines
17 Apr - 28 Apr Frontier Airlines
17 Apr - 29 Apr Frontier Airlines
14 Apr - 20 Apr Frontier Airlines
19 Apr - 29 Apr British Airways
21 Apr - 28 Apr British Airways
17 Apr - 30 Apr Air Canada
03 Apr - 17 Apr Frontier Airlines
26 Apr - 03 May Lufthansa
08 Apr - 15 Apr Lufthansa
29 Apr - 06 May Lufthansa

Also check the deals for one-way flights from St. Louis to Frankfurt in April.

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