What's the cheapest day to fly in September?

We don't have enough real fare data for September to identify a cheapest weekday.

Is September a good time to visit San Francisco?

Check the real weather data above for San Francisco in September — we don't have crowd or event data to add beyond that.

Should I book now or wait?

There's no reliable way to predict whether a specific fare will rise or fall. If the real September fares above already fit your budget, booking removes the risk of the price changing.

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Search Rio de Janeiro → San Francisco in September

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Flights from Rio de Janeiro to San Francisco in September

Planning a trip from Rio de Janeiro to San Francisco in September? Find the best flights and seasonal tips. Flight time: 13h 00m.

Flying in September

San Francisco typically sees daytime highs around 23°C and overnight lows around 14°C in September, based on the last 3 years. Expect roughly 4 mm of rain across the month.

Nearby airports

Near Rio de Janeiro

Santos Dumont Airport (SDU)14 km

Near San Francisco

San Carlos Airport (SQL)16 km
Metropolitan Oakland International Airport (OAK)18 km
Norman Y. Mineta San Jose International Airport (SJC)49 km

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More about this route

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FAQs — Rio de Janeiro to San Francisco in September

We don't have real fare data for September on this route yet — use the search box above for live prices.