At New York's LaGuardia Airport, Delta is the biggest, topping American Airlines, when excluding regional affiliate airlines such as American Eagle.

WSJ: Delta launching flights between Newark, Paris

The airlines covered in the report are Air Tran, Alaska, American, American Eagle, Delta, ExpressJet, Frontier, Hawaiian, JetBlue, SkyWest, Southwest, United, US Airways and Virgin America.

NPR: Airline Passenger Complaints Surged In 2012

Virgin America had the best baggage handling rate of all the airlines (0.87 misplaced bags per 1, 000 passengers.) American Eagle showed improvement from 2011 but still came in last, fumbling baggage at a rate of 5.80 mishandled bags per 1, 000 passengers.

CNN: SHARE THIS