AirHint found the following cheapest return flights from Detroit (DTW) to Frankfurt (FRA) in October 2025 (see full year).

Return flights

07 Oct - 21 Oct	Icelandair
02 Oct - 16 Oct	Icelandair
21 Oct - 04 Nov	Spirit Airlines
24 Oct - 29 Oct	Spirit Airlines
04 Oct - 18 Oct	Icelandair
24 Oct - 07 Nov	Spirit Airlines
07 Oct - 21 Oct	Air France	direct
02 Oct - 16 Oct	Air France	direct
21 Oct - 04 Nov	Lufthansa	direct
04 Oct - 18 Oct	Air France	direct
24 Oct - 07 Nov	Air France	direct
24 Oct - 29 Oct	Air France	direct

Also check the deals for one-way flights from Detroit to Frankfurt 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 Detroit to Frankfurt in October from $491

Return flights