Poll finds Southwest Airlines most popular airline

The nearest competitor to Southwest's approval rankings was Delta Airlines, with 15 percent. Delta was followed by United Airlines and JetBlue Airways, which were tied at 9 percent, American Airlines at 6 percent and U.S. Airways at 5 percent.

The finding comes a day after a Southwest airplane crash landed at New York's LaGuardia Airport after a piece of its landing gear collapsed.

The plane, a Boeing 737, was carrying 150 passengers at the time of the incident, and eight people were hospitalized with injuries.

The Southwest incident was the second major crash landing of a commercial airplane at a U.S. airport this month, following an accident involving an Asiana Airlines flight at San Francisco International Airport earlier this month.

The PPP poll found 48 percent of travelers feels safer in cars than they do on airplanes, compared to 36 percent who said the opposite.

The poll found that 69 percent of passengers said they would be more likely to be killed in a car crash than a plane crash, however, compared to only 15 percent who believed the reverse.

The PPP also found that 46 percent of travelers have a favorable opinion of Amtrak, compared to 13 percent who do not.

The poll found 53 percent of Americans say they have never flown in first class, compared to 46 percent who say they have. Additionally, the poll found that 7 percent of Americans say they have had sex on a commercial airplane, compared to 87 percent who have not.

The full results of the PPP airline industry poll can be read here.