Cheapest return flights from Seoul to Osaka in September from $132

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

Return flights

02 Sep - 09 Sep Peach direct
01 Sep - 04 Sep Peach direct
02 Sep - 04 Sep Peach direct
10 Sep - 30 Sep Jeju Air direct
01 Sep - 03 Sep Jeju Air direct
14 Sep - 18 Sep Jeju Air direct
02 Sep - 05 Sep Peach direct
10 Sep - 16 Sep Jeju Air direct
26 Sep - 02 Oct Jeju Air direct
29 Sep - 02 Oct Jeju Air direct
24 Sep - 30 Sep Jeju Air direct
28 Sep - 02 Oct Jeju Air direct
30 Sep - 02 Oct Jeju Air direct
10 Sep - 11 Sep Jeju Air direct
30 Sep - 01 Oct Jeju Air direct
28 Sep - 01 Oct Jeju Air direct
29 Sep - 01 Oct Jeju Air direct
27 Sep - 01 Oct Jeju Air direct
28 Sep - 03 Oct Asiana Airlines direct
29 Sep - 03 Oct Asiana Airlines direct

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

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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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