AirHint found the following cheapest return flights from Seoul (ICN) to Osaka (KIX) in June 2026 (see full year).

Return flights

24 Jun - 26 Jun	Korean Air	direct
10 Jun - 17 Jun	Korean Air	direct
20 Jun - 27 Jun	Korean Air	direct
01 Jun - 03 Jun	Korean Air	direct
01 Jun - 05 Jun	Korean Air	direct
07 Jun - 10 Jun	Korean Air	direct
02 Jun - 05 Jun	Korean Air	direct
03 Jun - 05 Jun	Korean Air	direct
03 Jun - 06 Jun	Korean Air	direct
09 Jun - 16 Jun	Korean Air	direct
30 Jun - 11 Jul	Korean Air	direct

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

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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Cheapest return flights from Seoul to Osaka in June from $251

Return flights