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

Return flights

10 Apr - 28 Apr	Etihad Airways
21 Apr - 01 May	Etihad Airways
30 Apr - 22 May	Etihad Airways
24 Apr - 04 May	Etihad Airways
30 Apr - 15 May	Etihad Airways
01 Apr - 08 Apr	Air France
19 Apr - 30 Apr	Air China
16 Apr - 30 Apr	Air China
28 Apr - 05 May	LOT
21 Apr - 02 May	Air China
10 Apr - 21 Apr	Cathay Pacific
20 Apr - 30 Apr	Air China
24 Apr - 30 Apr	Air China
16 Apr - 28 Apr	Air China
14 Apr - 19 Apr	Air China
14 Apr - 24 Apr	Air China
24 Apr - 03 May	Air China
25 Apr - 01 May	Air China
23 Apr - 22 May	Air China
24 Apr - 15 May	Air China

Also check the deals for one-way flights from Madrid 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.

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Cheapest return flights from Madrid to Seoul in April from 631€

Return flights