Cheapest return flights from London to Brussels in December from $131

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

Return flights

01 Dec - 10 Dec British Airways direct
06 Dec - 09 Dec British Airways direct
06 Dec - 07 Dec British Airways direct
13 Dec - 14 Dec British Airways direct
06 Dec - 08 Dec British Airways direct
05 Dec - 09 Dec British Airways direct
11 Dec - 15 Dec British Airways direct
06 Dec - 06 Dec British Airways direct
02 Dec - 04 Dec British Airways direct
02 Dec - 05 Dec British Airways direct
27 Dec - 29 Jan Brussels Airlines direct
28 Dec - 11 Jan Brussels Airlines direct
16 Dec - 03 Jan British Airways direct
19 Dec - 16 Jan British Airways direct
29 Dec - 03 Jan Brussels Airlines direct
29 Dec - 02 Jan Brussels Airlines direct

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

Skyscanner

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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Feel free to contact us with any feedback or request another flight research.