Nonstop flights from San Francisco International Airport (SFO) to Paris Charles de Gaulle Airport (CDG) typically take about 10 hours and 30 minutes to 11 hours, depending on winds and routing. Direct overnight red-eyes are common and often preferred for arrival in Paris the next morning, maximizing daylight for sightseeing in September. If you choose connecting itineraries, popular European hubs include London Heathrow, Dublin, Reykjavik, and Amsterdam; total travel time with a short layover can range from 13 to 16 hours. Check schedules early, as airlines sometimes add capacity in September for residual summer demand and business travel.