Cheapest return flights from Seoul to Osaka in September from $72

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

Return flights

08 Sep - 11 Sep Aero K Airlines direct
16 Sep - 18 Sep Aero K Airlines direct
02 Sep - 03 Sep Eastar Jet direct
09 Sep - 18 Sep Eastar Jet direct
03 Sep - 10 Sep Eastar Jet direct
26 Sep - 29 Sep Aero K Airlines direct
26 Sep - 03 Oct Aero K Airlines direct
17 Sep - 24 Sep Eastar Jet direct
18 Sep - 25 Sep Air Busan direct
17 Sep - 01 Oct Eastar Jet direct
29 Sep - 01 Oct Eastar Jet direct
02 Sep - 06 Sep Aero K Airlines direct
04 Sep - 06 Sep Aero K Airlines direct
28 Sep - 01 Oct Eastar Jet direct
10 Sep - 01 Oct Jin Air direct
17 Sep - 03 Oct Eastar Jet direct
11 Sep - 01 Oct Jin Air direct
16 Sep - 01 Oct Jin Air direct
22 Sep - 01 Oct Jin Air direct
12 Sep - 01 Oct Jin 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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