For the fourth year in a row, Virgin America claimed the top spot for overall U.S. airline performance in 2015.
The results from the 26th annual Airline Quality Rating were released Monday. Virgin's score declined just slightly from their 2014 score, but they still claimed top billing.
JetBlue airlines climbed two spots to finish a close second, followed by Delta in third place.
The study found that the industry overall improved in three of the four core elements, including on-time performance, rate of involuntary denied boardings, and the rate of mishandled baggage.
The rate of customer complaints, however, soared to its highest level in 15 years per passenger served.
Here are the 2015 airline performance ratings of the nation's leading 13 airlines, according to the Airline Quality Rating. In parenthesis are their rankings from the previous year:
1. Virgin America (1)
2. JetBlue (4)
3. Delta (3)
4. Hawaiian (2)
5. Alaska (5)
6. Southwest (6)
7. SkyWest (10)
8. United (9)
9. ExpressJet (11)
10. American (7)
11. Frontier (8)
12. Envoy Air (12)
13. Spirit (new to rating in 2015)
Alaska Air Group Inc. announced Monday that they would be buying Virgin America in a deal worth more than $2 billion, creating a powerhouse airline with an expanded West Coast presence.
For full details on the report, go to Airline Quality Rating.