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

Return flights

04 Dec - 08 Dec	Spirit Airlines
05 Dec - 13 Dec	Spirit Airlines
03 Dec - 10 Dec	Spirit Airlines
24 Dec - 07 Jan	Spirit Airlines
08 Dec - 22 Dec	Turkish Airlines
11 Dec - 25 Dec	Icelandair
31 Dec - 12 Jan	Air Canada
13 Dec - 23 Dec	United
31 Dec - 10 Jan	Air France
31 Dec - 11 Jan	Air France
25 Dec - 08 Jan	Air Canada
08 Dec - 22 Dec	Air France	direct
13 Dec - 23 Dec	Virgin Atlantic	direct
14 Dec - 20 Dec	Spirit Airlines
22 Dec - 05 Jan	Spirit Airlines
26 Dec - 02 Jan	Lufthansa
05 Dec - 02 Jan	United
04 Dec - 02 Jan	United
25 Dec - 27 Dec	jetBlue
28 Dec - 04 Jan	Delta

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

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 December from 494€

Return flights