And the airline US passengers hate most is ... Spirit? Yes, the budget carrier came in last on the American Customer Satisfaction Index for the third consecutive year, despite quite a bit of recent negative publicity for fellow airline United. The customer interviews stopped being collected in March, before United's most recent drama; even so, United didn't do all that well either, coming in as the third least-liked. The full ACSI rankings, including airline scores on a 100-point scale, per CNN Money: 
 -  JetBlue, 82
-  Southwest, 80
-  Alaska, 78
-  American, 76
 
                            
                            
                            
                            
                            
                                
                                
                                    
                                        
 -  Delta, 76
-  All other airlines, 74
-  Allegiant, 71
-  United, 70
-  Frontier, 63
-  Spirit, 61
 Frontier and Spirit were the only two airlines whose scores actually dropped this year; all the other airlines improved or held steady.