Cheapest return flights from Seoul to Osaka in September from $141

AirHint found the following cheapest return flights from Seoul (ICN) to Osaka (KIX) in September 2026 (see full year).

Return flights

02 Sep - 09 Sep Jeju Air direct
01 Sep - 17 Sep Jeju Air direct
10 Sep - 14 Sep Jeju Air direct
02 Sep - 08 Sep Jeju Air direct
10 Sep - 15 Sep Jeju Air direct
07 Sep - 10 Sep Jeju Air direct
28 Sep - 30 Sep Jeju Air direct
28 Sep - 01 Oct Jeju Air direct
04 Sep - 07 Sep Jeju Air direct
01 Sep - 04 Sep Jeju Air direct
05 Sep - 08 Sep Jeju Air direct
07 Sep - 07 Oct Jeju Air direct
30 Sep - 17 Oct Peach direct
30 Sep - 03 Oct Jeju Air direct
28 Sep - 02 Oct Jeju Air direct
26 Sep - 01 Oct Jeju Air direct
27 Sep - 02 Oct Jeju Air direct
29 Sep - 14 Oct Eastar Jet direct
30 Sep - 14 Oct Eastar Jet direct
30 Sep - 21 Oct Eastar Jet direct

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

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