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

Return flights

31 Dec - 05 Jan	Ryanair
09 Dec - 11 Dec	Wizz Air UK
10 Dec - 17 Dec	Wizz Air UK
11 Dec - 17 Dec	Wizz Air UK
09 Dec - 10 Dec	Wizz Air UK
09 Dec - 12 Dec	Wizz Air UK
10 Dec - 12 Dec	Wizz Air UK
13 Dec - 09 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
10 Dec - 14 Dec	Wizz Air UK
11 Dec - 08 Jan	Ryanair
11 Dec - 16 Dec	Wizz Air UK
15 Dec - 18 Dec	Ryanair
12 Dec - 16 Dec	Wizz Air UK
12 Dec - 11 Jan	Wizz Air UK
25 Dec - 11 Jan	Wizz Air
30 Dec - 04 Jan	easyJet
10 Dec - 09 Jan	Wizz Air UK
20 Dec - 05 Jan	Ryanair
22 Dec - 05 Jan	easyJet

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 109€

Return flights