American Airlines has Los Angeles to Beijing PEK tickets for as low as $320 round trip for nonstop flights. Delta Airlines has one stop flights via Seattle for a few dollars more. United Airlines is about $10 to $15 more. These airlines have low fare tickets for travel departures in October and November.
Hainan Airlines has even lower $318 round trip tickets for LAX-PEK for travel departures from October to March 2020.
American Airlines Los Angeles LAX – Beijing PEK – LAX