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

Return flights

31 Dec - 15 Jan	Icelandair
31 Dec - 14 Jan	Icelandair
30 Dec - 14 Jan	Lufthansa
30 Dec - 15 Jan	Lufthansa
31 Dec - 16 Jan	United
29 Dec - 15 Jan	United
31 Dec - 15 Jan	Brussels Airlines	direct
30 Dec - 15 Jan	Brussels Airlines	direct
30 Dec - 14 Jan	Brussels Airlines	direct
31 Dec - 14 Jan	Brussels Airlines	direct
24 Dec - 27 Dec	Lufthansa
24 Dec - 30 Dec	Lufthansa
24 Dec - 29 Dec	Lufthansa
24 Dec - 31 Dec	Lufthansa
24 Dec - 30 Dec	Lufthansa	direct
25 Dec - 30 Dec	Iberia
24 Dec - 31 Dec	Lufthansa	direct
25 Dec - 30 Dec	Lufthansa	direct
26 Dec - 31 Dec	LOT
24 Dec - 29 Dec	Lufthansa	direct

Also check the deals for one-way flights from Chicago 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 Chicago to Paris in December from 405€

Return flights