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

Return flights

18 Jan - 26 Jan	Frontier Airlines
24 Jan - 26 Jan	Spirit Airlines
13 Jan - 23 Jan	Spirit Airlines
15 Jan - 26 Jan	Frontier Airlines
05 Jan - 05 Feb	Spirit Airlines
12 Jan - 25 Jan	Spirit Airlines
09 Jan - 24 Jan	Spirit Airlines
05 Jan - 31 Jan	Spirit Airlines
01 Jan - 12 Jan	Turkish Airlines
02 Jan - 24 Jan	Lufthansa

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

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 January from $423

Return flights