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

Return flights

16 Apr - 17 Apr	Korean Air	direct
19 Apr - 22 Apr	Korean Air	direct
06 Apr - 14 Apr	Korean Air	direct
06 Apr - 13 Apr	Korean Air	direct
17 Apr - 19 Apr	Korean Air	direct
29 Apr - 03 May	Korean Air	direct
30 Apr - 03 May	Korean Air	direct
29 Apr - 05 May	Korean Air	direct

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

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Osaka to Seoul in April from $254

Return flights