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

Return flights

20 May - 24 May	ANA
01 May - 13 May	Japan Airlines
11 May - 20 May	Japan Airlines
20 May - 27 May	Japan Airlines
29 May - 02 Jun	Japan Airlines
23 May - 10 Jun	Japan Airlines
26 May - 28 May	Japan Airlines
28 May - 30 May	Japan Airlines
12 May - 19 May	ANA
12 May - 14 May	ANA
19 May - 21 May	ANA
24 May - 31 May	Japan Airlines
30 May - 01 Jun	Japan Airlines
16 May - 15 Jun	Japan Airlines

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

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 May from 367€

Return flights