The cheapest round-trip from Cologne to Brussels is about 185 EUR, usually in February 2027; May 2027 is priciest, so booking the low month saves around 29 EUR (~13%). Typical fare ~192 EUR, from 88 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Cologne (CGN) to Brussels (BRU/CRL). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 185 EUR, usually around February 2027. Typical fare ~192 EUR. Across the year prices range roughly 185–214 EUR — about 13% cheaper in the low season than the peak (May 2027). Carriers on this route include Austrian, Brussels Airlines.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-05. Prices change constantly — search live for current fares.
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