As we know that many people from Pakistan are recently living in Saudi Arabia due to lack of employment in the country. Majority of Pakistani citizens go abroad due to the reason of not getting jobs in the home country. Saudi Arabia is a developing country and needs many professional persons in achieving the goal and to take the country to a high level. For this they provide many job opportunities every year in which many talented Pakistanis are also selected. Beside these educated citizens of Pakistan there are also many low wage workers working in Saudi Arabia.
However, the workers who are working on low wages are definitely not in a situation to manage so high rate flights to visit their loved ones in the home country. So these people need some good package. So to help such people there are many aircraft companies which are introducing low rate flight packages with much good facilities.
Flights rates are also dependent on weather condition and the length of travel or the distance between both the stops. So the distance between Riyadh and Karachi is not that long, but its only 2061 kilometers. These are direct routes and there is no other stop in between both the cities. So to know the cheapest flight you can contact a good travel agent or can do an internet search.