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

Return flights

30 Dec - 24 Jan	Virgin Atlantic
02 Dec - 10 Dec	United
01 Dec - 08 Dec	Air France
05 Dec - 12 Dec	Air France
03 Dec - 10 Dec	Air France
07 Dec - 14 Dec	KLM
11 Dec - 18 Dec	Air France
22 Dec - 17 Jan	Air Canada
17 Dec - 24 Dec	Air France
31 Dec - 07 Jan	Air France
04 Dec - 27 Dec	Frontier Airlines
15 Dec - 22 Dec	Air France
23 Dec - 30 Dec	Air Canada
14 Dec - 03 Jan	Frontier Airlines
29 Dec - 05 Jan	Air France
25 Dec - 01 Jan	Air France
27 Dec - 03 Jan	Air France

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

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 Paris in December from $543

Return flights