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

Return flights

14 Jan - 21 Jan	American Airlines
12 Jan - 19 Jan	British Airways
08 Jan - 15 Jan	American Airlines
11 Jan - 18 Jan	American Airlines
09 Jan - 16 Jan	American Airlines
14 Jan - 21 Jan	Lufthansa	direct
06 Jan - 13 Jan	United
16 Jan - 23 Jan	Lufthansa	direct
09 Jan - 16 Jan	Lufthansa	direct
11 Jan - 18 Jan	Lufthansa	direct
26 Jan - 02 Feb	United

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from St. Louis to Frankfurt in January from 515€

Return flights