The area was inhabited since the Bronze Age: during 2007 a burial ground with 63 tombs, dated 2nd millennium BC, was discovered near the village of Arano.

In the late Roman period (4th century) one of the first Christian oratories outside the city of Verona was established in the hamlet of Saint Justina(S.Giustina).

In the Middle Age the church of Illasi was granted a status of Pieve, a religious center controlling the area and collecting taxes.

It was besieged several times, and at the end of the 14th century it was burned by the troops of the Da Carrara family, lords of Padua, just before it was conquered, like all the province of Verona, by the Republic of Venice.

The Pompei received the municipality of Illasi like a feud, and exercised civil jurisdiction until the arrival of Napoleone Bonaparte who ended the Republic of Venice (1797).