AirHint found the following cheapest return flights from Osaka (KIX) to London (STN) in December 2025 (see full year).

Return flights

23 Dec - 30 Dec	China Eastern
20 Dec - 10 Jan	China Eastern
22 Dec - 01 Jan	China Southern
20 Dec - 02 Jan	China Eastern
14 Dec - 07 Jan	Sichuan Airlines
22 Dec - 30 Dec	China Southern
07 Dec - 14 Dec	Shenzhen Airlines
14 Dec - 04 Jan	Sichuan Airlines
13 Dec - 15 Dec	China Eastern
10 Dec - 13 Dec	Air China
11 Dec - 15 Dec	Qatar Airways
14 Dec - 16 Dec	Sichuan Airlines
27 Dec - 29 Dec	China Eastern
10 Dec - 14 Dec	Air China
18 Dec - 26 Jan	Emirates
16 Dec - 22 Dec	China Eastern
20 Dec - 13 Jan	Emirates
19 Dec - 06 Jan	Emirates
31 Dec - 04 Jan	Emirates
31 Dec - 02 Jan	China Eastern

Also check the deals for one-way flights from Osaka 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 Osaka to London in December from $591

Return flights