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

Return flights

21 May - 28 May	Etihad Airways
03 May - 14 May	Etihad Airways
03 May - 15 May	Etihad Airways
15 May - 21 May	Etihad Airways
07 May - 21 May	Etihad Airways
07 May - 14 May	Etihad Airways
11 May - 18 May	LOT
26 May - 02 Jun	Etihad Airways
07 May - 05 Jun	Etihad Airways
07 May - 17 May	Etihad Airways
06 May - 18 May	Etihad Airways
14 May - 26 May	Etihad Airways
31 May - 16 Jun	LOT
25 May - 01 Jun	LOT
24 May - 01 Jun	LOT
31 May - 09 Jun	LOT
31 May - 10 Jun	LOT
27 May - 07 Jun	Etihad Airways
28 May - 07 Jun	Etihad Airways
29 May - 13 Jun	Etihad Airways

Also check the deals for one-way flights from Madrid 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 Madrid to Seoul in May from 548€

Return flights