Since studies began on airlines in 1991, the industry is doing the best it has in 23 years. The latest airline index has been released and the top airlines have been named. The airline quality index is put out by Wichita State University and Embry-Riddle Aeronautical University-Prescott.

For the second year in a row, Virgin Airlines is at number 1 followed by, for the second year in a row, Jet Blue. Coming in 3rd was Hawaiian Airlines and, in fourth, Delta.

Southwest ranked eighth out of sixteen airlines and had quite a drop. In 2012, they were ranked 3rd.

American Airline and US Airways, who merged this past December ranked 7th (US Airways) and 9th (American). United merged with Continental Airlines and were among the worst coming in at 14. American Eagle was 15th.

Six airlines showed worse scores from last year but eight improved their rating with the biggest improvement from United.

Many factors are considered for the ranking including on time performance, rate of lost bags, passengers being bumped, overbooked flights and customer complaints.