Cheapest return flights from Seoul to Osaka in September from $143

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

Return flights

01 Sep - 09 Sep Jeju Air direct
15 Sep - 16 Sep Jeju Air direct
09 Sep - 14 Sep Jeju Air direct
04 Sep - 08 Sep Jeju Air direct
14 Sep - 16 Sep Jeju Air direct
13 Sep - 16 Sep Jeju Air direct
13 Sep - 15 Sep Jeju Air direct
01 Sep - 03 Sep Jeju Air direct
15 Sep - 17 Sep Jeju Air direct
16 Sep - 17 Sep Jeju Air direct
27 Sep - 01 Oct Korean Air direct
27 Sep - 03 Oct Asiana Airlines direct
29 Sep - 03 Oct Asiana Airlines direct
30 Sep - 03 Oct Asiana Airlines direct
29 Sep - 02 Oct Korean Air direct
30 Sep - 02 Oct Korean Air direct
28 Sep - 02 Oct Korean Air direct
19 Sep - 04 Oct Jeju Air direct
30 Sep - 04 Oct Korean Air direct
27 Sep - 04 Oct Korean Air direct

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

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