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

Return flights

29 Oct - 05 Nov	Air France	direct
08 Oct - 12 Oct	Icelandair
08 Oct - 15 Oct	Icelandair
09 Oct - 16 Oct	Icelandair
25 Oct - 19 Nov	Icelandair
07 Oct - 21 Oct	Air France
12 Oct - 19 Oct	Icelandair
02 Oct - 27 Oct	Icelandair
25 Oct - 19 Nov	Air France	direct
01 Oct - 28 Oct	Air France
30 Oct - 04 Nov	Delta
01 Oct - 10 Oct	Delta
24 Oct - 31 Oct	Air France	direct
24 Oct - 30 Oct	Air France	direct
30 Oct - 04 Nov	Air France	direct

Also check the deals for one-way flights from Chicago to Paris in October.

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 October from 373€

Return flights