A feature called Tips Insights added by Google Flight. It indicates the right time for the user to book the flight ticket at the cheapest price. It will notify the user based on the history data of that specific flight. This helps passengers to understand whether they should book tickets now or wait for a while to get a better ticket price. Based on this information users can search for cheap tickets.
This Insights feature tells you the best time to book a flight ticket to your destination, usually two months before departure. Also, sometimes it can tell about the time when prices are going down. Then you can wait a bit before booking the ticket. This feature of Google Flight is likely to work from this week.
Google already has several features to help users find cheap flight tickets. Insights is another great addition to this.