While I'm not defending DL in any way, shape or form......they are % wise, not the bottom of the list. There are 5 airlines worse than them, according to the numbers I found. The list is a ways down but it's there. They obviously have the most complaints but percentagewise, they are middle of the pack.
Check it out
Also, as a sidenote.......I found this interesting for all you WN lovers out there. The list I'm referring to is Most Frequently Delayed Flights. Here is the list and the link........
Most Frequently Delayed Flights
1. Southwest Airlines flight 1142 from Baltimore to New York LaGuardia –
late 100.0 percent of the time
2. Southwest Airlines flight 1229 from New York LaGuardia to Chicago Midway –
late 93.75 percent of the time
2. Southwest Airlines flight 1138 from Denver to Kansas City, MO –
late 93.75 percent of the time
4. Southwest Airlines flight 1599 from Baltimore to New York LaGuardia –
late 87.50 percent of the time
4. Southwest Airlines flight 1925 from Baltimore to Hartford, CT –
late 87.50 percent of the time
4. Southwest Airlines flight 2585 from Houston Hobby to Albuquerque, NM –
late 87.50 percent of the time
4. Southwest Airlines flight 3922 from Houston Hobby to Austin, TX –
late 87.50 percent of the time
WN sucks