The increase will come into effect on March 30th, just eight months after the route was introduced.
Pakistan International said that an increased demand from passengers in the Bradford and Yorkshire region is the reason behind the decision to launch an additional weekly flight.
Tony Hallwood, Leeds Bradford’s commercial and aviation development director, said that the airport had been working alongside local business tourism and cultural organisations to "guarantee the success" of the flight.
"We are delighted that the significant demand from the Yorkshire region is now being satisfied with an additional weekly flight," he said.
Manx2 said in January that it had enjoyed a 15 percent increase in demand for its flights to the Isle of Man from Leeds Bradford in the first two weeks of 2009 compared to the same period last year.