American Airlines, which has cut 20 cities from its service at Lambert-St. Louis International Airport, previously held the Rams’ sponsorship deal. Fort Worth, Texas-based American Airlines, a subsidiary of AMR Corp. (NYSE: AMR), decided not to renew the sponsorship deal after last season after reviewing its global portfolio of deals, said Billy Sanez, an American spokesman. American had been the official airline of the Rams dating back to the days of TWA, he said.