The Polish national took the boy out in his car and allowed him to pick out the prostitute, who was standing at the side of the road in the red-light district of Nottingham.
But the 42-year-old father was arrested because the teenager had chosen an undercover police officer, Nottingham Crown Court heard.
The man, who cannot be named for legal reasons,was handed a 10-month prison sentence, suspended for a year, after he admitted a charge of trying to solicit a woman to have sex with a child, the Press Association reported.
The court heard that the father, who came to Britain eight years ago, was arrested last July during an undercover operation by the city's vice squad.
Prosecutor Adrian Harris said the man and his son had approached the undercover officer whose code name was Sarah and beckoned her over .
He asked "Sarah" how much it would cost for her to have sex with his son and they agreed on a 20 pound fee. However, when the car pulled over, the man was arrested by plainclothes police officers.
"The boy said that they had driven past the girl and his dad pointed to her and said 'will she do?'" Harris said.
"He said 'yes' and they had turned round. He said his dad did this because he was still a virgin and he was taking care of that for him."
Judge Jonathan Teare said he would spare the father jail because of his excellent character and that he believed he did not mean any harm to his son.
"You have a duty of care to your son and that is to look after his moral welfare, not as you might think to break him in to the ways of sex through a prostitute," he said.
The court was told the boy would continue to live with his father.