According to the 2013 Airline Quality Rating report, which is an annual study of airline performance, Southwest comes in as the eighth best major airline in the U.S.

Areas of evaluation include: On-Time Arrivals, Denied Boardings, Mishandled Baggage, and Customer Complaints. The airline's biggest hit, is Mishandled Baggage, which is 3.08 per 1,000 passengers.

(Boeing 737-700, Southwest Airlines)