Chennai Airport Summer Flights: The number of Chennai–Bengaluru weekly flights has been increased from 12 to 23 while the Chennai–Delhi route has seen an increase of weekly flights from 70 to 77. Chennai Airport Summer Flights: The number of Chennai–Bengaluru weekly flights has been increased from 12 to 23 while the Chennai–Delhi route has seen an increase of weekly flights from 70 to 77. Zee News :Business