If you can not see the time table properly then i am sorry but you are wrong Delhi s Terminal 3 is now the Main Hub of Air India and is going to be connected to Hyderabad Chennai Kochi Ahmedabad apart from Amritsar Kolkata and Mumbai AI633 Ahmedabad Delhi AI639 187 Amritsar Delhi AI187 Amritsar Delhi Leg is on A320 Delhi Toronto on Boeing 777 300ER AI623 Banaglore Delhi AI643 Chennai Delhi AI127 Hyderabad Delhi AI127 Hyderabad Delhi leg is on A320 Delhi Chicago on Boeing 777 300ER AI693 Kochi Delhi AI681 Kolkata Delhi AI101 143 314 348 Mumbai Delhi Except AI101 all the remaining Mumbai Delhi flights are on a A320 family aircraft it is from Delhi passengers board Boeing 777s Airbus A330s to go to Paris Hong Kong Osaka Shanghai When we say these Cities are connected to Delhi They are operated on Airbus A320 family aircraft using Air India Callsign and Code You don t always have references for each and every route you have to check the time table and schedule