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

Return flights

05 Aug - 06 Aug	Lufthansa
05 Aug - 07 Aug	Lufthansa
06 Aug - 11 Aug	Lufthansa
13 Aug - 20 Aug	Lufthansa
07 Aug - 11 Aug	Lufthansa
07 Aug - 12 Aug	Lufthansa
28 Aug - 04 Sep	Lufthansa
12 Aug - 18 Aug	Lufthansa
01 Aug - 05 Aug	Lufthansa
14 Aug - 18 Aug	Lufthansa
19 Aug - 26 Aug	Lufthansa
28 Aug - 03 Sep	Lufthansa
29 Aug - 02 Sep	Lufthansa
26 Aug - 02 Sep	Lufthansa
28 Aug - 02 Sep	Lufthansa
29 Aug - 01 Sep	Lufthansa
28 Aug - 01 Sep	Lufthansa
25 Aug - 01 Sep	KLM
21 Aug - 02 Sep	KLM
30 Aug - 03 Sep	SWISS

Also check the deals for one-way flights from London to Brussels 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 London to Brussels in August from $258

Return flights