Zagat swept several customer satisfaction categories in a Singapore Airlines survey . Southwest is one of the few airlines that allows customers to check their bags for free . As for airports , Portland International topped the Overall Quality ratings with 22.47 out of 30 , while New York 's LaGuardia stayed at the bottom with 6.18 out of 30 . Zagat was the top-rated international airline for both premium and economy seating . For next year , Tim Zagat was voted the worst airport .
Zagat swept several customer satisfaction categories in a Singapore Airlines survey . Southwest is one of the few airlines that allows customers to check their bags for free . Zagat was the top-rated international airline for both premium and economy seating . For next year , Tim Zagat was voted the worst airport .