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

Return flights

05 Sep - 15 Oct	SWISS
22 Sep - 12 Oct	KLM
10 Sep - 09 Oct	KLM
03 Sep - 30 Sep	KLM
15 Sep - 22 Sep	KLM
16 Sep - 16 Oct	Air France
15 Sep - 05 Oct	KLM
21 Sep - 12 Oct	KLM
16 Sep - 05 Oct	Air France
06 Sep - 07 Oct	KLM
15 Sep - 09 Oct	KLM
16 Sep - 09 Oct	Air France
14 Sep - 24 Sep	KLM
14 Sep - 22 Sep	KLM
17 Sep - 25 Sep	Spirit Airlines
14 Sep - 29 Sep	KLM
07 Sep - 21 Sep	SWISS
06 Sep - 28 Sep	KLM
05 Sep - 12 Sep	Spirit Airlines
06 Sep - 13 Sep	Air Canada

Also check the deals for one-way flights from Detroit to Beirut 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 Beirut in September from $763

Return flights