FLIGHTSThe best airlines, ranked by customer satisfactionUSA TODAYThe American Customer Satisfaction Index Travel Report for 2018-2019 is here. Which airlines came out on top, and which didn't? We list them here with their customer satisfaction scores (and their score from last year). Companies are scored in the index between 0 and 100, based on data from about 300,000 customer interviews every year. The ASCI also includes scores for different points of the air travel process, including quality and reliability of moble apps, bag handling and boarding experience.Leah Hogsten/The Salt Lake Tribune Via AP10. Spirit Airlines: 63 • 2018 score: 62Jeremy Dwyer-Lindgren For USA TODAY9. Frontier Airlines: 64 • 2018 score: 62Jeremy Dwyer-Lindgren, Special To USA TODAY8. United Airlines: 70 • 2018 score: 67Tyler R. Mallory, For USA TODAY6. (Tie) Allegiant Air: 71 • 2018 score: 746. (Tie) All Others (airlines researched but not included by name here): 71 • 2018 score: 73Armando Babani, EPA-EFE5. American Airlines: 73 • 2018 score: 74Jeremy Dwyer-Lindgren For USA TODAY4. Delta Air Lines: 75 • 2018 score: 74Jeremy Dwyer-Lindgren For USA TODAY2. (Tie) Southwest Airlines: 79 • 2018 score: 80Ted S. Warren, AP2. (Tie) JetBlue Airways: 79 • 2018 score: 79Jeremy Dwyer-Lindgren, Special To USA TODAY1. Alaska Airlines: 80 • 2018 score: 79Jeremy Dwyer-Lindgren For USA TODAYFeatured Weekly Ad