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

Return flights

24 Sep - 01 Oct	Jin Air
25 Sep - 02 Oct	Jin Air
24 Sep - 26 Sep	Jin Air
23 Sep - 26 Sep	Jin Air
24 Sep - 25 Sep	Jeju Air
27 Sep - 30 Sep	Jeju Air
27 Sep - 01 Oct	Jeju Air
24 Sep - 29 Sep	Jeju Air
29 Sep - 01 Oct	Jeju Air
25 Sep - 29 Sep	T'way Air	direct
25 Sep - 30 Sep	T'way Air	direct
25 Sep - 02 Oct	T'way Air	direct
22 Sep - 29 Sep	T'way Air	direct
25 Sep - 01 Oct	T'way Air	direct
24 Sep - 01 Oct	T'way Air	direct
22 Sep - 25 Sep	T'way Air	direct
25 Sep - 28 Sep	T'way Air	direct
26 Sep - 01 Oct	T'way Air	direct
30 Sep - 04 Oct	Asiana Airlines
29 Sep - 06 Oct	Korean Air

Also check the deals for one-way flights from Cheju to Osaka in September.

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 September from 107€

Return flights