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

Return flights

18 May - 20 May	Air China
28 May - 03 Jun	Air China
20 May - 25 May	Air China
26 May - 03 Jun	Air China
13 May - 20 May	Lufthansa
22 May - 26 May	Lufthansa
29 May - 05 Jun	Qatar Airways
17 May - 22 May	Air China
17 May - 20 May	Air China
11 May - 07 Jun	Lufthansa
30 May - 10 Jun	Scandinavian Airlines
01 May - 31 May	Lufthansa
01 May - 16 May	Lufthansa

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

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Cheapest return flights from Seoul to Brussels in May from 440€

Return flights