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

Return flights

12 Oct - 01 Nov	Icelandair
16 Oct - 08 Nov	Icelandair
11 Oct - 01 Nov	Icelandair
24 Oct - 15 Nov	Icelandair
15 Oct - 08 Nov	Icelandair
08 Oct - 01 Nov	Icelandair
26 Oct - 04 Nov	Icelandair
24 Oct - 05 Nov	Icelandair
21 Oct - 29 Oct	Scandinavian Airlines
07 Oct - 29 Oct	Scandinavian Airlines
28 Oct - 04 Nov	Scandinavian Airlines
16 Oct - 23 Oct	Icelandair
12 Oct - 23 Oct	Icelandair
15 Oct - 22 Oct	Icelandair
06 Oct - 01 Nov	Icelandair
24 Oct - 30 Oct	Icelandair
10 Oct - 14 Oct	Icelandair
07 Oct - 14 Oct	Icelandair
08 Oct - 17 Oct	SWISS
27 Oct - 30 Oct	Scandinavian Airlines

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 390€

Return flights