The best day to arrive at Riyadh is Tuesday and it would be best to avoid Sunday, as prices are on average 38.32% higher than on Tuesday. (Average prices, based on 313591 datapoints.)
The cheapest airline flying from Riyadh to Dubai is Nas Air. They are 61% cheaper than Emirates. (Average prices, based on 203 datapoints.)
The best time to fly is at around 4. (Average prices, based on 248 datapoints.)