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

Return flights

09 Mar - 11 Mar	Peach	direct
05 Mar - 10 Mar	Peach	direct
04 Mar - 18 Mar	Peach	direct
17 Mar - 22 Mar	Aero K Airlines	direct
11 Mar - 18 Mar	T'way Air	direct
13 Mar - 17 Mar	Jin Air	direct
13 Mar - 18 Mar	Jin Air	direct
13 Mar - 16 Mar	Jin Air	direct
14 Mar - 18 Mar	Jin Air	direct
14 Mar - 16 Mar	Jin Air	direct
30 Mar - 04 Apr	Korean Air	direct
31 Mar - 05 Apr	Korean Air	direct
30 Mar - 03 Apr	Korean Air	direct
22 Mar - 03 Apr	Korean Air	direct

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

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 Osaka to Seoul in March from $128

Return flights