AirHint found the following cheapest return flights from Cardiff (CWL) to Tokyo (NRT) in December 2025 (see full year).

Return flights

04 Dec - 11 Dec	Ryanair
02 Dec - 09 Dec	KLM
25 Dec - 19 Jan	KLM
06 Dec - 18 Dec	Singapore Airlines
22 Dec - 06 Jan	Singapore Airlines
11 Dec - 14 Dec	Singapore Airlines
29 Dec - 02 Jan	Singapore Airlines
20 Dec - 20 Jan	Singapore Airlines
08 Dec - 20 Dec	Singapore Airlines
08 Dec - 21 Dec	Singapore Airlines
08 Dec - 14 Dec	Singapore Airlines

Also check the deals for one-way flights from Cardiff to Tokyo 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 Cardiff to Tokyo in December from 727€

Return flights