No surprise that Delta tops the list. I have only had one issue with Delta, and that involved the staff at JFK once when we were returning from SXM a few years ago. We got stranded overnight in JFK, but when we eventually got home I e-mailed their customer service department describing what we went through and they apologized and did us right. When something goes wrong or when awful customer service occurs, many people deal with it and say "that's just the airlines being themselves", but the better ones do want to hear from you (that's what they told us at Delta). It's not frivolous complaining, but feedback that airlines need to do things better in the future.
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