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

Return flights

10 Dec - 21 Dec	KLM
08 Dec - 21 Dec	KLM
01 Dec - 14 Dec	KLM
09 Dec - 21 Dec	KLM
01 Dec - 16 Dec	KLM
12 Dec - 21 Dec	KLM
13 Dec - 23 Dec	KLM
03 Dec - 07 Dec	KLM
01 Dec - 09 Dec	KLM
03 Dec - 10 Dec	British Airways
15 Dec - 01 Jan	KLM
28 Dec - 11 Jan	KLM
24 Dec - 01 Jan	KLM
30 Dec - 06 Jan	KLM
22 Dec - 01 Jan	KLM
15 Dec - 04 Jan	KLM
20 Dec - 11 Jan	KLM
17 Dec - 04 Jan	KLM
22 Dec - 04 Jan	KLM
18 Dec - 05 Jan	British Airways

Also check the deals for one-way flights from London to Osaka 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 London to Osaka in December from $930

Return flights