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

Return flights

12 Dec - 11 Jan	Wizz Air UK
31 Dec - 05 Jan	Ryanair
11 Dec - 16 Dec	Wizz Air UK
14 Dec - 17 Dec	easyJet
12 Dec - 16 Dec	Wizz Air UK
14 Dec - 31 Dec	Wizz Air UK
11 Dec - 13 Dec	Wizz Air UK
26 Dec - 12 Jan	Ryanair
12 Dec - 17 Dec	Wizz Air UK
12 Dec - 15 Dec	Wizz Air UK
20 Dec - 07 Jan	Ryanair
16 Dec - 18 Dec	easyJet
26 Dec - 05 Jan	Ryanair
10 Dec - 16 Dec	easyJet
27 Dec - 17 Jan	Ryanair
12 Dec - 13 Dec	Wizz Air UK
18 Dec - 08 Jan	easyJet
23 Dec - 05 Jan	Ryanair
23 Dec - 19 Jan	Ryanair
28 Dec - 01 Jan	Ryanair

Also check the deals for one-way flights from London to Brussels in December.

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 December from $165

Return flights