Google is apparently close to launching their Flight Search service in India. The service lets you search and book flights domestically and internationally. It also has a hotel component.
The company is currently offering Flight Search in limited regions including USA, Canada and some European countries.
The service is very powerful and provides a very intuitive user interface to look for best flight options for your travel.
The market for flight and hotel search services in India is very competitive. There are tons of players including Cleartrip, Makemytrip, Yatra, Goibibo, Ixigo, etc.
The point remains, the margins in air tickets is so low that prices across different services are pretty close to each other so in the end, it is all about usability and user experience. And since Google is the most popular search engine in India, it can take away a lot of traffic from these regional players.