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

Return flights

16 Oct - 25 Oct	Ryanair
28 Oct - 04 Nov	Ryanair
31 Oct - 15 Nov	Ryanair
28 Oct - 07 Nov	Ryanair
31 Oct - 14 Nov	Ryanair
30 Oct - 03 Nov	Ryanair
30 Oct - 15 Nov	Ryanair
20 Oct - 30 Oct	Hainan Airlines
28 Oct - 20 Nov	easyJet
31 Oct - 07 Nov	easyJet
27 Oct - 12 Nov	Ryanair
29 Oct - 08 Nov	Ryanair
01 Oct - 11 Oct	Ryanair
03 Oct - 16 Oct	Hainan Airlines
22 Oct - 27 Oct	Hainan Airlines
03 Oct - 22 Oct	Hainan Airlines
22 Oct - 29 Oct	Hainan Airlines
21 Oct - 30 Oct	Hainan Airlines
01 Oct - 17 Oct	easyJet
04 Oct - 11 Oct	Lufthansa

Also check the deals for one-way flights from Brussels to Seoul in October.

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 October from 524€

Return flights