LONDON As the novel coronavirus continues to spread, commercial flights have all but stopped. The situation is so dire that the head of the trade group representing the world’s airlines called the last few months “its deepest crisis ever.” A Reuters analysis of data from FlightAware, which tracks air traffic in real-time, reveals a series of sequential and precipitous declines in flights in four key regions as officials sought to contain the outbreak. From March 24 to March 30, FlightAware tracked about 280,000 flights, down almost 500,000 from the same week a year earlier. In late March, the International Air Transport Association estimated lost revenue from the coronavirus will exceed $250 billion in 2020 and urged governments to offer immediate financial support to the industry. The transport association said today’s crisis is far worse and more widespread than after 9/11, when U.S. airlines lost approximately $19.6 billion in revenue in 2001-2002.—Reuters