Cheapest return flights from St. Louis to Frankfurt in December from $737

AirHint found the following cheapest return flights from St. Louis (STL) to Frankfurt (FRA) in December 2025 (see full year).

Return flights

23 Dec - 16 Jan Air Canada
01 Dec - 15 Dec Air Canada
08 Dec - 15 Dec Lufthansa
24 Dec - 31 Dec Delta
17 Dec - 24 Dec United
24 Dec - 31 Dec Lufthansa direct
28 Dec - 04 Jan Lufthansa direct
17 Dec - 24 Dec Lufthansa direct
18 Dec - 25 Dec United

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

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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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