The cheapest round-trip from Barcelona to Brussels is about 39 EUR, usually in June 2026; May 2027 is priciest, so booking the low month saves around 107 EUR (~73%). Typical fare ~63 EUR, from 330 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Barcelona (BCN/GRO/REU) 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: 39 EUR, usually around June 2026. Typical fare ~63 EUR. Across the year prices range roughly 39–146 EUR — about 73% cheaper in the low season than the peak (May 2027).
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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