In an all-cash deal Google paid $700m to buy flight-data provider ITA Software so that the search giant can provide users with detailed information about fairs, times, and destinations of commercial airline flights. It looks like Google is now displaying flight data for destination queries.
Type in “london to new york” and you will see the following result
In compact mode the Onebox result shows number of flights and flight duration along with the relevant prominent airline companies. However in the expanded mode you can see exact departure and arrival times along with flight number and destination code. Here is a snapshot of the expanded mode for “london to new york” query.