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

Return flights

04 Dec - 11 Dec	Wizz Air
01 Dec - 02 Dec	Wizz Air UK
11 Dec - 14 Dec	Wizz Air UK
11 Dec - 18 Dec	Wizz Air UK
10 Dec - 11 Dec	Wizz Air
11 Dec - 12 Dec	Wizz Air UK
15 Dec - 19 Dec	Wizz Air UK
05 Dec - 07 Dec	Wizz Air
01 Dec - 08 Dec	Wizz Air UK
11 Dec - 21 Dec	Wizz Air UK
26 Dec - 03 Jan	easyJet
24 Dec - 01 Jan	easyJet
26 Dec - 01 Jan	easyJet
28 Dec - 02 Jan	easyJet
31 Dec - 03 Jan	Ryanair
21 Dec - 04 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 $106

Return flights