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

Return flights

02 Oct - 05 Oct	Frontier Airlines
02 Oct - 09 Oct	Frontier Airlines
27 Oct - 10 Nov	Frontier Airlines
03 Oct - 10 Oct	Frontier Airlines
03 Oct - 05 Oct	Frontier Airlines
05 Oct - 07 Oct	Frontier Airlines
30 Oct - 13 Nov	Frontier Airlines
24 Oct - 07 Nov	Turkish Airlines
25 Oct - 01 Nov	Condor
06 Oct - 21 Oct	Condor
29 Oct - 05 Nov	Icelandair
21 Oct - 28 Oct	Icelandair
24 Oct - 31 Oct	Icelandair
15 Oct - 22 Oct	United
09 Oct - 16 Oct	Icelandair
28 Oct - 13 Nov	Delta

Also check the deals for one-way flights from Denver 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 Denver to Paris in October from 513€

Return flights