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

Return flights

25 Aug - 08 Sep	Finnair
30 Aug - 15 Sep	Finnair
30 Aug - 08 Sep	Finnair
28 Aug - 03 Sep	Finnair
30 Aug - 17 Sep	Etihad Airways
23 Aug - 10 Sep	Etihad Airways
25 Aug - 06 Sep	Finnair
29 Aug - 14 Sep	Etihad Airways
28 Aug - 15 Sep	Finnair
28 Aug - 06 Sep	Finnair
25 Aug - 31 Aug	Finnair
11 Aug - 25 Aug	Finnair
02 Aug - 11 Aug	Ryanair
07 Aug - 18 Aug	Turkish Airlines
06 Aug - 16 Aug	Turkish Airlines
18 Aug - 31 Aug	Finnair
04 Aug - 27 Aug	Finnair
16 Aug - 31 Aug	Pegasus Airlines
13 Aug - 28 Aug	Ryanair
06 Aug - 18 Aug	Turkish Airlines

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

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 August from 650€

Return flights