17405 Krishna Express starts from Tirupati at 5:25 a.m. and arrives at Adilabad on the next day 6:15 a.m.
Similarly, 17406 Krishna Express starts from Adilabad at 20:45 and arrives at Tirupati on the next day at 21:15.
The train is named after the Krishna River which flows from the city of Vijayawada.
Then, it was extended up to Hyderabad Decan, as an early morning Day Train.
It is hauled by a [[ Electric Loco Shed, Lallaguda|Lallaguda]]-based WAG-9 / WAG-9 locomotive from ADB till SC, from SC till TPTY it is hauled by a Lallaguda-based WAP-7 locomotive and vice versa.