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

Return flights

02 Dec - 04 Dec	Jeju Air
03 Dec - 06 Dec	Jeju Air
03 Dec - 06 Dec	T'way Air	direct
02 Dec - 04 Dec	T'way Air	direct
10 Dec - 12 Dec	T'way Air	direct
02 Dec - 05 Dec	T'way Air	direct
19 Dec - 22 Dec	T'way Air	direct
20 Dec - 23 Dec	T'way Air	direct
15 Dec - 18 Dec	T'way Air	direct
05 Dec - 09 Dec	Jeju Air
30 Dec - 03 Jan	Jeju Air
29 Dec - 01 Jan	Jeju Air
31 Dec - 04 Jan	Jeju Air
30 Dec - 03 Jan	T'way Air	direct
29 Dec - 01 Jan	T'way Air	direct
31 Dec - 04 Jan	T'way Air	direct

Also check the deals for one-way flights from Cheju 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 Cheju to Osaka in December from 183€

Return flights