Question : Is Sabiha Gokcen International Airport (SAW) the cheapest airport for getting to Faro Airport (FAO)?
Answer : Departing from Sabiha Gokcen International Airport is not the only way to get to Faro Airport. Try looking for flights from Istanbul Ataturk Airport (IST) as well. Over the next two months, flights from IST to FAO are being booked 45% cheaper than flights from SAW to FAO. Being only 26 miles away, it's easily accessible for most.
Question : How long do most people stay in Faro?
Answer : Of course you're not most people, but if you were, you'd stay roughly one week.