Amarillo passengers booking nonstop flights to Denver now have only one airline choice instead of two. Southwest Airlines ran its last direct flight to Denver on Saturday, narrowing options for travelers even as the city of Amarillo looks for ways to increase air service and air carriers grow more focused on the bottom line. “Airlines nowadays are not looking to be the biggest market share at an airport but really (at) what routes make the most money,” Amarillo Aviation Director Sara Freese said. read more