Raif Badawi was handed the draconian punishment and imprisoned for 10 years for criticising Saudi Arabia's powerful clerics and ridiculing the country's morality police on a liberal blog he founded.
The flogging is to be administered over 20 weekly sessions, with 50 lashes each week, the fist of which was last month.
The Prince in Riyadh last year
According to reports, Prince Charles is to raise the issue with Saudi Arabia's new king, Salman bin Abdulaziz, who took the throne after the death of King Abdullah in January.
While no doubt a good start, here are seven other topics Prince Charles should raise while in Saudi Arabia.
7 Questions Prince Charles Should Ask While In Saudi Arabia (But Probably Won't)