Within India in Jan 2018 the connections were: Delhi 10, Bangalore 7, Kolkata 7, Hyderabad 7, Mumbai 4, Chennai 2, Vizag 1, Ranchi 1
In January 2023 the within India connections are: Delhi 10-11, Bangalore 6, Kolkata 8, Hyderabad 3, Mumbai 6, Chennai 2, Vizag - zero, Ranchi 1, Pune - 2, Ahmedabad -1, Jharsuguda -1, Allahabad -1 , Varanasi -1, Jaipur - 3/7, Raipur 4/7, Rourkela -1,Jeypore-1.
So while the direct Vizag connectivity that was there in 2018 is no longer there, there is new connectivity to 9 other places: Pune, Ahmedabad, Jharsuguda, Allahabad, Varanasi, Jaipur, Raipur, Rourkela, and Jeypore.
The frequency to Hyderabad has gone down from 7 to 3. Perhaps the extra connectivity was by people who were connecting to/from Mumbai (which has additional 2 flights), Pune, Ahmedabad, and Jaipur.
Internationally, In Jan 2018 there was a daily connectivity to KL and thrice weekly connectivity to Bangkok. There is no international connectivity in Jan 2023, but the government has accepted a bid by Indigo for connectivity to Singapore, Dubai and Bangkok; no start date has been announced.
In between 2018 and 2023, new connectivity have been tried to places such as Kochi, Guwahati, Goa, Nagpur, Patna, and Surat. Hope some of these will come back.
The total number of flights/week towards the end of February 2018 is similar to the numbers in February 2023. In between this number had gone down.