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

Return flights

15 Jan - 30 Jan	Scandinavian Airlines
17 Jan - 21 Jan	Scandinavian Airlines
12 Jan - 25 Jan	Scandinavian Airlines
13 Jan - 20 Jan	Spirit Airlines
17 Jan - 31 Jan	Spirit Airlines
08 Jan - 31 Jan	Spirit Airlines
22 Jan - 26 Jan	Frontier Airlines
31 Jan - 21 Feb	Spirit Airlines
19 Jan - 26 Jan	Turkish Airlines
04 Jan - 24 Jan	Spirit Airlines
14 Jan - 07 Feb	Spirit Airlines
13 Jan - 07 Feb	TAP
05 Jan - 31 Jan	Frontier Airlines
30 Jan - 02 Feb	Turkish Airlines
22 Jan - 19 Feb	Delta

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 498€

Return flights