Question : What is the cheapest day to fly in the next four weeks?
Answer : Since low prices are preferred, look at Mar 16th. As of Feb 13th, it's showing the cheapest ticket sales at $859. That is 60% below the average price for this route, so you can spend that extra money on an adventure rather than the flight.
Question : What price range should you expect when booking from Bilbao (BIO) to Santiago (SCL)?
Answer : Flight prices are fluctuating much more for this route than the majority of routes from Spain and Canary Islands, as they're ranging anywhere from $770 to $3,088. Prices tend to be lower the further out you book.
Question : How many days should you spend in Santiago?
Answer : Over the next two months, passengers from BIO to SCL are planning on staying for 10 days on average.