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

Return flights

09 Sep - 04 Oct	Eastar Jet
10 Sep - 17 Sep	Eastar Jet
09 Sep - 18 Sep	Eastar Jet
30 Sep - 04 Oct	T'way Air
24 Sep - 01 Oct	Jin Air
10 Sep - 16 Sep	Eastar Jet
11 Sep - 17 Sep	Jeju Air
10 Sep - 24 Sep	Jeju Air
10 Sep - 18 Sep	Jeju Air
17 Sep - 30 Sep	T'way Air	direct
13 Sep - 17 Sep	Jeju Air
26 Sep - 03 Oct	Eastar Jet
08 Sep - 09 Sep	Eastar Jet
13 Sep - 18 Sep	Jeju Air
27 Sep - 02 Oct	T'way Air	direct
27 Sep - 01 Oct	Jeju Air
15 Sep - 28 Oct	Jeju Air
15 Sep - 29 Oct	Jeju Air
25 Sep - 04 Oct	T'way Air	direct
27 Sep - 01 Oct	T'way Air	direct

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 $110

Return flights