AirHint found the following cheapest return flights from Brussels (BRU) to Seoul (ICN) in August 2025 (see full year).

Return flights

19 Aug - 02 Sep	Etihad Airways
26 Aug - 04 Sep	Finnair
27 Aug - 11 Sep	Finnair
26 Aug - 09 Sep	Finnair
29 Aug - 09 Sep	Finnair
29 Aug - 12 Sep	Finnair
30 Aug - 14 Sep	Finnair
31 Aug - 14 Sep	Finnair
21 Aug - 03 Sep	Finnair
30 Aug - 15 Sep	Finnair
22 Aug - 30 Aug	Hainan Airlines
20 Aug - 31 Aug	Finnair
18 Aug - 31 Aug	Ryanair
24 Aug - 31 Aug	Finnair
23 Aug - 30 Aug	Finnair
18 Aug - 30 Aug	LOT
08 Aug - 31 Aug	Hainan Airlines
11 Aug - 18 Aug	LOT
11 Aug - 17 Aug	LOT
17 Aug - 24 Aug	LOT

Also check the deals for one-way flights from Brussels 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 Brussels to Seoul in August from $667

Return flights