Please be aware that Beijing has multiple airports and that these results are only for Beijing Capital International Airport.
The best day to arrive at Beijing is Saturday and it would be best to avoid Friday, as prices are on average 195.15% higher than on Saturday. (Average prices, based on 369 datapoints.)
The cheapest airline flying to Beijing is China Eastern Airlines. They are 67% cheaper than Air China. (Average prices, based on 204 datapoints.)
At Beijing the most flights depart around 15:00. (Hourly flights, based on 257 datapoints.)
From Beijing it is on average the cheapest to fly to Xiamen and to Singapore. (Average prices, based on 181 datapoints.)