The cheapest round-trip from Rome to San Francisco is about 507 EUR, usually in October 2026; July 2026 is priciest, so booking the low month saves around 119 EUR (~19%). Typical fare ~567 EUR, from 151 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Rome (FCO/CIA) 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: 507 EUR, usually around October 2026. Typical fare ~567 EUR. Across the year prices range roughly 507–626 EUR — about 19% cheaper in the low season than the peak (July 2026). Carriers on this route include Condor, Alaska, Aer Lingus, Tap Air Portugal.
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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