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

Return flights

20 Jul - 20 Aug	American Airlines
27 Jul - 04 Aug	British Airways
27 Jul - 08 Aug	British Airways
29 Jul - 12 Aug	jetBlue
05 Jul - 13 Jul	Spirit Airlines
10 Jul - 15 Jul	Scandinavian Airlines
01 Jul - 08 Jul	Air Canada
01 Jul - 30 Jul	WestJet
08 Jul - 05 Aug	Air France
17 Jul - 02 Aug	jetBlue
09 Jul - 14 Jul	Scandinavian Airlines

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

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 July from $727

Return flights