According to comScore Media Metrix service, in April, 18.5 million online users aged 15 or older visited a travel site from home or work compared to 13.9 million in April, 2010.
"The online travel category continues to show strong growth in India... As the online travel industry matures it will be important for brands to provide increasing functionality, ease of
use and security to its users to effectively compete in this growing market," comScore Director India Kedar Gavane said in a statement.
Indian Railways remained the most visited travel site, with 8.3 million people logging on to its web site in the reported month as against 7.7 million visitors in April, 2010.
MakeMyTrip received 3.8 million visitors, Yatra 3.5 million and ClearTrip.com received 2.1 million viewers in April, 2011. US-based Expedia secured the fifth position with 1.8 million visitors.
The numbers excludes visits from public computers such as Internet cafes or access from mobile phones or PDAs.