There are two ways to use Google Flights: Google plane tickets go directly to the search engine or to the Google Flights website to find a ticket.
For example, you can open a new Google search and type "flights from MCI to NYC in October" so that Google can detect the flights that match that specification. Or, if your browser has reached your current location, just type the "Flight to New York City" bus for airport information where you are now.
If you use the Google Flight website, you will not only see a list of flights, but you will also see their map along with your current location on the right. The Google Flight website has additional options not found in Google search results pages.