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

Return flights

09 Dec - 16 Dec	Wizz Air
03 Dec - 09 Dec	Wizz Air
10 Dec - 11 Dec	easyJet	direct
09 Dec - 12 Dec	Wizz Air
03 Dec - 05 Dec	Wizz Air
09 Dec - 11 Dec	Wizz Air
03 Dec - 10 Dec	Wizz Air
04 Dec - 11 Dec	Wizz Air UK
06 Dec - 11 Dec	Wizz Air UK
04 Dec - 10 Dec	Wizz Air UK
17 Dec - 13 Jan	easyJet
30 Dec - 12 Jan	Wizz Air
17 Dec - 03 Jan	easyJet
13 Dec - 04 Jan	Ryanair
29 Dec - 05 Jan	easyJet
30 Dec - 01 Jan	Wizz Air
30 Dec - 04 Jan	Wizz Air
30 Dec - 05 Jan	Wizz Air
30 Dec - 06 Jan	Wizz Air
31 Dec - 04 Jan	Wizz Air

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 78€

Return flights