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 08:00. (Hourly flights, based on 348 datapoints.)
From Beijing it is on average the cheapest to fly to Shanghai and to Seoul. (Average prices, based on 277 datapoints.)
From Beijing most of the flights depart to Shanghai, second best connected from Beijing is Xiamen. (Daily flights, based on 101 datapoints.)