Both destinations are served by Vishakhapatnam (VTZ). Since there's no flight route between them, the best way to travel is by road.
Srikakulam
Fly to Vishakhapatnam (VTZ), then travel by road to Srikakulam. Taxis, buses, and private cabs are available from the airport.
Vishakhapatnam
Fly to Vishakhapatnam (VTZ), then travel by road to Vishakhapatnam. Local transport options include taxis, auto-rickshaws, and state buses.