For years, Copa Airlines has enjoyed an affiliation with Continental Airlines and also been an affiliate member of the Skyteam alliance. When Continental leaves Skyteam on October 24, 2009, however, Copa will also depart the alliance.
The move is no surprise; these are airlines that work in very close cooperation, providing combined service throughout the Americas and unified frequent flyer credit (along with Aero República) under the shared OnePass program.
Besides, have you looked at the Copa logo? You could hardly be blamed for confusing them in a hurried rush through an airport terminal.
There have been no announcements from Copa or Aero República of plans to join the Star Alliance.