Question : In the next four weeks, what day should you book your trip?
Answer : Mar 3rd has seen bookings (as of Feb 20th) as cheap as $505. That comes in 72% below the average price for this route. Saving on booking fees means you'll have more cash in your hand for the trip.
Question : Is the price you found a good deal?
Answer : Ranging anywhere from $505 to $3,090, prices for YVR to CSX do change a lot more than the majority of routes from Canada. However, the sooner you book, the more you'll be able to save.
Question : How long do most people stay in Changsha?
Answer : Of course you're not most people, but if you were, you'd stay roughly 47 days.
Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in March is Friday. Flexibility is paramount when booking travel plans in order to keep travel costs down.