“Air India will increase frequency between New Delhi and Chicago from 6 to 7days a week effective Nov 3, 2021, to March 23, 2022. Bookings open through Air India Website, Booking Offices, Call Centre and our Authorised Travel Agents,” Air India said in a tweet. If you plan to travel to Chicago, Nixtour has a series of cheap flight tickets to all of the states in the US. Contact us to know more.