A Chinese couple were in such a rush to meet relatives they left their three-year-old son on a plane.

An attendant on the China Southern Airlines flight from Guangzhou to Dalian city found the child after landing.

She told Bandao Morning News that she spotted an unclaimed red coat on a window seat after the passengers had disembarked.

"I lifted the coat, and found a child around three-years-old sleeping underneath," she said.

The airport immediately announced the discovery over its PA system and sent guards to ask people at checkpoints.

The couple eventually contacted the guards themselves when they overheard them ask other passengers if they had lost a child.

"We were in such a rush to meet our relatives that we didn't realise we were going without him," said the father.