Google is testing a new feature which enables people to quickly get airline flight information. You can check out an example over here.
Users can type in two different cities, or airport codes, in the Google search box to bring up two boxes for entering departing and returning flight dates. Below those are links to the travel Web sites Expedia, Hotwire and Orbitz. Clicking on one of those links leads directly to flight options for your selected itinerary on that site.