The Brisbane teenager was riding the quad bike at Boondooma Dam when he lost control and jumped off.
He landed awkwardly on all fours and suffered a suspected broken right arm.
The Toowoomba RACQ CareFlight Rescue helicopter was tasked to Boondooma Dam, north west of Kingaroy, at 11am.
The 13-year-old boy was flown to Toowoomba Hospital in a stable condition.
He was accompanied in the helicopter by his mother.
The young teenager was on holidays with his family at the time.