Cheapest return DTW–LHR flights, September

AirHint found the following cheapest return flights from Detroit (DTW) to London (LHR) in September 2026 (see full year).

Return flights

06 Sep - 16 Sep Turkish Airlines
27 Sep - 12 Oct Turkish Airlines
15 Sep - 20 Sep Turkish Airlines
24 Sep - 05 Oct Turkish Airlines
11 Sep - 25 Sep Turkish Airlines
01 Sep - 30 Sep Turkish Airlines
04 Sep - 19 Sep Frontier Airlines
01 Sep - 15 Sep Delta
15 Sep - 20 Sep Delta direct

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

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