AirHint found the following cheapest return flights from Cologne (CGN) to Brussels (BRU) in December 2025 (see full year).
Return flights
| 11 Dec - 12 Dec | Ryanair | ||
| 06 Dec - 11 Dec | Ryanair | ||
| 02 Dec - 10 Dec | Ryanair | ||
| 02 Dec - 05 Dec | Ryanair | ||
| 08 Dec - 09 Dec | Ryanair |
Also check the deals for one-way flights from Cologne to Brussels in December.
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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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