Please be aware that Beijing has multiple airports and that these results are only for Daxing International Airport.
The best month to arrive at Beijing is January and the most expensive month to fly is February. (Average prices, based on 230 datapoints.)
The best day to arrive at Beijing is Monday and it would be best to avoid Friday, as prices are on average 98.38% higher than on Monday. (Average prices, based on 216 datapoints.)
The cheapest airline flying to Beijing is China United Airlines. They are 61% cheaper than MasWings. (Average prices, based on 277 datapoints.)
At Beijing the most flights depart around 00:00. (Hourly flights, based on 288 datapoints.)