There were some bright spots for a few airlines in the survey. Dallas-based Southwest Airlines Co. ranked first, and was one of only two airlines mentioned by name in the survey that improved in terms of customer satisfaction this year compared with last year. Houston-based Continental Airlines Inc. was the other.
"We've done as well as we have up to date by making sure our customers have a rich experience, and that's largely due to our people," said Beth Harbin, a spokeswoman for Southwest, which also is one of the few consistently profitable airlines.
About 20,000 people were asked during the first quarter of this year to rate their level of satisfaction as customers of companies in a variety of industries, including the airlines.
"The same problems that have pulled airline passenger satisfaction down the past few years -- disenchanted employees, increasing fuel costs, bankruptcy, and now also record levels of lost, delayed, and damaged luggage -- cause it to drop again," the researchers said in their analysis.