Cheapest return flights from Seoul to Osaka in September from $92

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

Return flights

17 Sep - 24 Sep Air Seoul, Inc direct
17 Sep - 18 Sep Air Seoul, Inc direct
17 Sep - 17 Sep Air Seoul, Inc direct
29 Sep - 03 Oct Jin Air direct
29 Sep - 02 Oct Jin Air direct
17 Sep - 25 Sep Eastar Jet direct
17 Sep - 30 Sep Eastar Jet direct
21 Sep - 01 Oct Peach direct
29 Sep - 01 Oct Eastar Jet direct
20 Sep - 24 Sep Eastar Jet direct
21 Sep - 24 Sep Air Seoul, Inc direct
17 Sep - 04 Oct Eastar Jet direct
20 Sep - 27 Sep Eastar Jet direct
29 Sep - 30 Sep Jin Air direct
17 Sep - 27 Sep Eastar Jet direct
20 Sep - 01 Oct Eastar Jet direct
21 Sep - 02 Oct Jeju Air direct
21 Sep - 03 Oct Jeju Air direct
24 Sep - 01 Oct Jeju Air direct
29 Sep - 15 Oct Eastar Jet 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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