The best month to fly between Riyadh and Islamabad is September and the most expensive month to fly is April. (Average prices, based on 1341 datapoints.)
The best day to arrive at Riyadh is Monday and it would be best to avoid Friday, as prices are on average 38.81% higher than on Monday. (Average prices, based on 3732147 datapoints.)
The cheapest airline flying from Riyadh to Islamabad is PIA. They are 55% cheaper than airblue. (Average prices, based on 1347 datapoints.)