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

Return flights

15 Oct - 08 Nov	Icelandair
12 Oct - 01 Nov	Icelandair
27 Oct - 22 Nov	Icelandair
25 Oct - 19 Nov	Icelandair
27 Oct - 03 Nov	Icelandair
22 Oct - 15 Nov	Icelandair
26 Oct - 01 Nov	Icelandair
22 Oct - 01 Nov	Icelandair
08 Oct - 01 Nov	Icelandair
27 Oct - 04 Nov	Icelandair
08 Oct - 14 Oct	Icelandair
15 Oct - 21 Oct	Icelandair
17 Oct - 22 Oct	Icelandair
08 Oct - 22 Oct	Icelandair
15 Oct - 22 Oct	Icelandair
24 Oct - 30 Oct	Icelandair
08 Oct - 15 Oct	Icelandair
16 Oct - 21 Oct	Icelandair
21 Oct - 29 Oct	Scandinavian Airlines
07 Oct - 29 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 $419

Return flights