Question : How much should a trip from Hangzhou (HGH) to Dulles (IAD) cost?
Answer : Flight prices change less than most routes from China for HGH to IAD. They vary from $878 to $1,243. The further out you book a route, the more likely you are to save.
Question : How long do most people visit Dulles?
Answer : Of course you're not most people, but if you were, you'd stay roughly 90 days.