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

Return flights

31 Oct - 07 Nov	TAP
08 Oct - 15 Oct	TAP
22 Oct - 29 Oct	TAP
05 Oct - 11 Oct	TAP
16 Oct - 26 Oct	TAP
21 Oct - 28 Oct	Spirit Airlines
18 Oct - 31 Oct	TAP
11 Oct - 31 Oct	TAP
18 Oct - 01 Nov	Spirit Airlines
04 Oct - 12 Oct	TAP
02 Oct - 05 Oct	Spirit Airlines
11 Oct - 18 Oct	TAP
27 Oct - 04 Nov	TAP

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 $476

Return flights