The flag is a field of red, with a grouping of yellow rocks on the hoist side. Over the rocks, a liquid (spring waters) pours out of a turned-over white vase. It is also on the Voronezhan coat of arms. The ratio of the flag is 2:3.
The pile of stones represents the steep right bank of the city of Voronezh, while the water pouring from the jug represents the flowing Don River, more specifically, the Voronezh River tributary. The jug itself, a "creation of skilled human hands", symbolises the diligence of Voronezh's people. It first appeared on the coat of arms of the city of Voronezh approved by the emperor on September 21, 1781 (Old Style).