The month / calendar / chart feature allows you to view the cheapest prices across a month or even the cheapest month in the whole year, but all prices are estimated only.
It works by storing any prices other users have found for a specific route and dates over the past 15 days. The more searches our users do on a given route, the more accurate the data Skyscanner can show.
That means the prices that you see on the month view are only intended as a guide, and we update the prices to get you the most recent fares available from the airlines and travel agents once you choose your specific travel dates and proceed to the results page. As flight tickets and availability can change all the time, the price on the results page might be different from the one you previously saw on the month view, but we hope you still find the tool useful nonetheless as a guide.