Passengers at Chicago's O'Hare International Airport wait in line for security screening in May 2016. A study released Monday found that U.S. airline quality is higher than ever, but air travelers may disagree. Scott Olson/Getty Images hide caption toggle caption Scott Olson/Getty Images The Two-Way Have An Airline Complaint? Don't Call The Airline — Tell The Dept. Of Transportation April 10, 2017 An annual study gives airlines the highest scores for quality in the 26 years the ratings have been compiled. But the ratings don't fully reflect the experience of the American air traveler.