JetBlue and Southwest.AlessandraRC/Shutterstock Analytics firm J.D. Power revealed its annual rankings for the best and worst airlines for customer satisfaction. JetBlue Airways took the top spot for its Mint business class and Even More Space seats. Southwest Airlines has the best economy product, while American Airlines ranked low in all categories. A new study says JetBlue Airways and Southwest Airlines are the best carriers for customer satisfaction.Analytics firm J.D.