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

Return flights

05 Dec - 13 Dec	Scandinavian Airlines
03 Dec - 10 Dec	British Airways
09 Dec - 16 Dec	British Airways
04 Dec - 17 Dec	Delta
11 Dec - 18 Jan	Air France
14 Dec - 07 Jan	United
06 Dec - 13 Dec	British Airways
14 Dec - 21 Dec	Iberia
13 Dec - 24 Jan	Air Canada
15 Dec - 22 Dec	British Airways
30 Dec - 06 Jan	British Airways
25 Dec - 01 Jan	British Airways
12 Dec - 19 Dec	British Airways
19 Dec - 10 Jan	British Airways
13 Dec - 03 Jan	Delta
20 Dec - 27 Dec	British Airways
28 Dec - 04 Jan	Delta
27 Dec - 03 Jan	United
26 Dec - 03 Jan	Air Canada

Also check the deals for one-way flights from Kansas City 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 Kansas City to London in December from $582

Return flights