Although the *A 'PC travel desk' (the application we love to hate) suggests that for instance PFN/IAH is a valid city pair ("This City Pair is served, but the flight server did not find any logical connections (15 October 2008)") , the *A website does not show Panama in the 'destinations' drop down box. So I assume that PFN is not served by any *A carrier. Any takers?