Cheapest return flights from Seoul to Osaka in September from $85

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

Return flights

09 Sep - 30 Sep Jeju Air direct
03 Sep - 30 Sep Jeju Air direct
17 Sep - 30 Sep Jeju Air direct
10 Sep - 30 Sep Jeju Air direct
03 Sep - 10 Sep Jeju Air direct
10 Sep - 17 Sep Jeju Air direct
02 Sep - 10 Sep Jeju Air direct
17 Sep - 24 Sep Jeju Air direct
10 Sep - 10 Sep Jeju Air direct
09 Sep - 10 Sep Jeju Air direct
01 Sep - 02 Oct Peach direct
29 Sep - 04 Oct Jeju Air direct
29 Sep - 03 Oct Jeju Air
25 Sep - 02 Oct Peach direct
09 Sep - 23 Oct Jeju Air direct
01 Sep - 01 Oct Jeju Air direct
28 Sep - 03 Oct Jeju Air direct
16 Sep - 15 Oct Jeju Air direct
27 Sep - 04 Oct Peach direct
22 Sep - 02 Oct Jeju Air 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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