The cheapest round-trip from Brussels to Dublin is about 45 EUR, usually in August 2026; January 2027 is priciest, so booking the low month saves around 47 EUR (~51%). Typical fare ~84 EUR, from 200 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Brussels (BRU/CRL) to Dublin (DUB). 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: 45 EUR, usually around August 2026. Typical fare ~84 EUR. Across the year prices range roughly 45–92 EUR — about 51% cheaper in the low season than the peak (January 2027). Carriers on this route include Ryanair, Aer Lingus, KLM, 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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