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

Return flights

23 Apr - 08 May	Air China
23 Apr - 10 May	Air China
24 Apr - 09 May	Air China
30 Apr - 07 May	Etihad Airways
15 Apr - 26 Apr	Air China
17 Apr - 28 Apr	Air China
15 Apr - 27 Apr	Air China
16 Apr - 28 Apr	Air China
14 Apr - 28 Apr	Air China
14 Apr - 26 Apr	Air China
19 Apr - 23 Apr	Air China
21 Apr - 25 Apr	Air China
16 Apr - 01 May	Air China
14 Apr - 01 May	Air China
28 Apr - 17 May	Air China
30 Apr - 08 May	Scandinavian Airlines
24 Apr - 01 May	Air China
07 Apr - 16 Apr	Iberia
25 Apr - 02 May	Etihad Airways
01 Apr - 14 Apr	Iberia

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 565€

Return flights