U.S. to examine Southwest Airlines cancellations, calls 'unacceptable'

The U.S. Transportation Department (USDOT) said late on Monday it would examine the large number of Southwest Airlines <a href="https://www.reuters.com/companies/LUV.N" target="_blank">(LUV.N)</a> cancelled and delayed flights in recent days to determine if they were in the airline's control, calling them "unacceptable."