Years ago I read a list that was either the same as this one or similar, and it was from Qantas.
Doing a quick scan, I see about 99 fatalities on Quantas since they started flying. Looks like 23 of those fatalities were when planes were shot down by the Nips, so those wouldn’t be counted as accidents. So let’s say 76 fatalities in accidents.
Southwest’s only fatality was a boy in a car which was hit by a plane.