The cheapest round-trip from Brussels to San Francisco is about 594 EUR, usually in October 2026; January 2027 is priciest, so booking the low month saves around 64 EUR (~10%). Typical fare ~596 EUR, from 182 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Brussels (BRU/CRL) to San Francisco (SFO/OAK/SJC). 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: 594 EUR, usually around October 2026. Typical fare ~596 EUR. Across the year prices range roughly 594–658 EUR — about 10% cheaper in the low season than the peak (January 2027). Carriers on this route include Aer Lingus, Tap Air Portugal, British Airways, 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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