AirHint found the following cheapest return flights from Detroit (DTW) to London (LHR) in August 2025 (see full year).

Return flights

11 Aug - 29 Sep	Icelandair
12 Aug - 18 Aug	Icelandair
18 Aug - 26 Aug	Icelandair
11 Aug - 31 Aug	Icelandair
20 Aug - 27 Aug	Icelandair
19 Aug - 09 Sep	Icelandair
26 Aug - 01 Sep	Icelandair
05 Aug - 18 Aug	Icelandair
25 Aug - 15 Sep	Icelandair
23 Aug - 29 Aug	Spirit Airlines
16 Aug - 30 Aug	Spirit Airlines
06 Aug - 20 Aug	Spirit Airlines
09 Aug - 12 Aug	Spirit Airlines
05 Aug - 19 Aug	Icelandair
13 Aug - 03 Sep	Icelandair
13 Aug - 03 Sep	Air France	direct
19 Aug - 09 Sep	Air France	direct
25 Aug - 15 Sep	Air France	direct
26 Aug - 01 Sep	Air France	direct

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

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 London in August from 427€

Return flights