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

Return flights

10 Oct - 31 Oct	Japan Airlines
04 Oct - 14 Oct	Japan Airlines
20 Oct - 27 Oct	Japan Airlines
05 Oct - 13 Oct	Japan Airlines
04 Oct - 12 Oct	Japan Airlines
01 Oct - 24 Oct	Japan Airlines
01 Oct - 07 Oct	Japan Airlines
02 Oct - 12 Oct	Japan Airlines
01 Oct - 12 Oct	Japan Airlines

Also check the deals for one-way flights from Seoul to Brussels 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 Seoul to Brussels in October from $2657

Return flights