Question : Do travelers from Zhengzhou typically stay in San Francisco for very long?
Answer : Passengers from CGO to SFO stay 33 days on average.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : The lowest-cost day to fly in December is Sunday. Being flexible with your travel days garners you even more savings during your booking.
Question : How often is the price changing when booking a trip from Zhengzhou Xinzheng Airport (CGO) to San Francisco International Airport (SFO)?
Answer : Prices for this trip tend to fluctuate a lot more than others. Remember, you can save by booking further in advance.