The cheapest round-trip from Brussels to Chicago is about 548 EUR, usually in August 2026; October 2026 is priciest, so booking the low month saves around 3 EUR (~0%). Typical fare ~550 EUR, from 91 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Brussels (BRU/CRL) to Chicago (ORD/MDW). 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: 548 EUR, usually around August 2026. Typical fare ~550 EUR. Across the year prices range roughly 548–551 EUR — about 0% cheaper in the low season than the peak (October 2026). Carriers on this route include ITA, Brussels Airlines, United, Icelandair.
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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