AirHint found the following cheapest return flights from London (LCY) to Brussels (BRU) in December 2026 (see full year).
Return flights
| 10 Dec - 13 Dec | KLM | ||
| 04 Dec - 06 Dec | KLM | ||
| 19 Dec - 21 Dec | KLM | ||
| 16 Dec - 20 Dec | KLM | ||
| 03 Dec - 06 Dec | SWISS | ||
| 06 Dec - 09 Dec | SWISS | ||
| 11 Dec - 18 Dec | KLM |
Also check the deals for one-way flights from London to Brussels in December.
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