Cheapest return flights from Osaka to Seoul in September from $116

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

Return flights

30 Sep - 09 Oct Jeju Air direct
29 Sep - 30 Sep Jeju Air direct
29 Sep - 30 Oct Jeju Air direct
27 Sep - 30 Sep Peach direct
23 Sep - 30 Sep Peach direct
27 Sep - 29 Sep Jeju Air direct
30 Sep - 08 Oct Asiana Airlines direct
28 Sep - 30 Sep Peach direct
25 Sep - 29 Sep Jeju Air direct
25 Sep - 30 Sep Jeju Air direct
26 Sep - 30 Sep Jeju Air direct
26 Sep - 28 Sep Peach
25 Sep - 27 Sep Jeju Air
30 Sep - 07 Oct Asiana Airlines direct
23 Sep - 07 Oct Jeju Air direct
24 Sep - 01 Oct Peach
29 Sep - 01 Oct Jeju Air direct
30 Sep - 01 Oct Jeju Air direct
27 Sep - 01 Oct Jeju Air direct
29 Sep - 06 Oct Jeju Air direct

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