The destinations from Mumbai Chhatrapati Shivaji Maharaj Intl Airport have reduced due to Covid-19. As and when COVID is gone in hopefully Early 2022 this list will be updated back to the original 100+ destinations. The order is by flight duration. Info from Flightfrom.com. If the city has more than one airport it doesn't matter you only have to name the city. Also, there are over 50-100 destinations which were very busy from Mumbai Airport T1 and T2 but were stopped due to the Pandemic, so please don't tell names of obvious cities which flights are temporarily discontinued to/from in the comments.
Just Enjoy ! :D