BEIJING (TheStreet) -- Thursday's 7:35 a.m. China Southern Airlines' commuter flight to Shanghai from Beijing didn't get off the ground until 9:40 a.m., according to the Beijing airport Web site. No surprise there. Domestic air travelers in China have grown accustomed to hours-long delays and last-minute cancellations, especially since 2011 and particularly in the eastern one-third of the country where most people live. Delays can affect air traffic nationwide for days at a time.