Google has launched a new feature in Google Flights that allows users to find the cheapest flight options for their trips. The 'cheapest' tab will display the lowest available prices, even linking to third-party booking sites that may offer better deals. This new feature caters to travelers willing to sacrifice convenience for savings, showcasing creative options such as longer layovers or booking separate legs of a trip with different airlines. The update is rolling out globally over the next two weeks, providing a more cost-effective travel planning tool.