Air China
seems to be flying a Boeing 747-400 combi on a daily basis from Los
Angeles (LAX) to
Beijing (PEK) in 2010. They leave Los Angeles around
1:40 am and arrive in Beijing around 5:20 am local time the next day
(as the flights crosses the international dateline).
Air China
In December 2009
Air China seems to have the following 51 widebody airliners in it's fleet:
5
Boeing 747-400 Combi and 4 B747-400
10
Boeing 777-200
20
Airbus A330-200
6
Airbus A340-300
6
Boeing 767-300(ER)
The Boeing 747-400 Combi also seems to fly daily in 2010 the route Beijing-Frankfurt which has a flighttime of around 10 hours.