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

Return flights

07 Mar - 14 Mar	China Southern
12 Mar - 20 Mar	China Southern
07 Mar - 22 Mar	China Southern
07 Mar - 15 Mar	China Southern
05 Mar - 13 Mar	China Southern
14 Mar - 29 Mar	China Southern
12 Mar - 27 Mar	China Southern
14 Mar - 27 Mar	China Southern
14 Mar - 26 Mar	China Southern
03 Mar - 06 Mar	China Southern
02 Mar - 01 Apr	LOT
14 Mar - 02 Apr	LOT
19 Mar - 06 Apr	China Southern
19 Mar - 01 Apr	China Southern
01 Mar - 01 Apr	LOT
15 Mar - 02 Apr	LOT
19 Mar - 03 Apr	China Southern
20 Mar - 02 Apr	LOT
03 Mar - 17 Apr	Etihad Airways
19 Mar - 02 Apr	Etihad Airways

Also check the deals for one-way flights from Madrid to Seoul in March.

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 March from $500

Return flights