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

Return flights

09 Dec - 30 Dec	Air Canada
10 Dec - 31 Dec	Air Canada
02 Dec - 09 Dec	United
10 Dec - 07 Jan	United
02 Dec - 09 Dec	British Airways	direct
01 Dec - 31 Jan	Air Canada
12 Dec - 19 Dec	United
16 Dec - 07 Jan	Air Canada
17 Dec - 07 Jan	Scandinavian Airlines
10 Dec - 31 Dec	British Airways	direct
19 Dec - 23 Dec	Air France
18 Dec - 22 Dec	Air Canada
22 Dec - 29 Dec	United
19 Dec - 04 Jan	Allegiant Air
16 Dec - 19 Dec	Scandinavian Airlines
16 Dec - 07 Jan	Aer Lingus	direct
10 Dec - 07 Jan	British Airways	direct

Also check the deals for one-way flights from Cincinnati 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 Cincinnati to London in December from 512€

Return flights