AirHint found the following cheapest return flights from Detroit (DTW) to Paris (CDG) in September 2025 (see full year).

Return flights

30 Sep - 16 Oct	Spirit Airlines
30 Sep - 14 Oct	Scandinavian Airlines
30 Sep - 05 Oct	Spirit Airlines
27 Sep - 22 Oct	Spirit Airlines
22 Sep - 29 Sep	Spirit Airlines
29 Sep - 29 Oct	Condor
25 Sep - 18 Oct	Frontier Airlines
20 Sep - 26 Sep	Spirit Airlines
20 Sep - 11 Oct	Frontier Airlines
19 Sep - 11 Oct	Frontier Airlines
29 Sep - 08 Oct	Delta	direct
30 Sep - 16 Oct	Air France	direct
22 Sep - 29 Sep	Air France	direct
18 Sep - 28 Sep	Delta	direct
20 Sep - 26 Sep	Air France	direct

Also check the deals for one-way flights from Detroit to Paris in September.

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 Detroit to Paris in September from 498€

Return flights