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

Return flights

12 May - 26 May	LOT
12 May - 19 May	LOT
05 May - 12 May	LOT
03 May - 12 May	LOT
17 May - 27 May	LOT
10 May - 18 May	LOT
01 May - 12 May	LOT
14 May - 20 May	Etihad Airways
14 May - 24 May	Etihad Airways
11 May - 18 May	LOT
31 May - 18 Jun	Etihad Airways
31 May - 11 Jun	Etihad Airways
15 May - 03 Jun	LOT
29 May - 11 Jun	Etihad Airways
29 May - 01 Jun	LOT
29 May - 11 Jun	Korean Air	direct
25 May - 30 Jun	Air Canada

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Madrid to Seoul in May from 558€

Return flights