Cheapest return flights from St. Louis to Frankfurt in January from $858

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

Return flights

09 Jan - 23 Jan Frontier Airlines
04 Jan - 21 Jan Aer Lingus
27 Jan - 03 Feb Lufthansa
29 Jan - 05 Feb Lufthansa
22 Jan - 29 Jan Lufthansa
30 Jan - 14 Feb Air Canada
31 Jan - 07 Feb Lufthansa
02 Jan - 19 Jan Lufthansa
02 Jan - 18 Jan Lufthansa
14 Jan - 21 Jan Lufthansa direct
20 Jan - 27 Jan Lufthansa
16 Jan - 23 Jan Lufthansa direct
18 Jan - 25 Jan Lufthansa direct
02 Jan - 09 Jan Lufthansa

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

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