What has happened to Delta? There has to be someone who can explain this total chaos they are in and in turn has such a disastrous effect on so many of us. And we are just a relatively small group of hunters.
Just my opinion and complete speculation, but here’s my 2 bits. Regarding the ATL - JNB flights only:
Limited passenger pool compared to pre-Covid. Those limited passengers saw flight deals on United’s newly added route, Qatar Airways, Ethiopian, etc. Cost comparison on United vs Delta - $1600-$1800 on United vs $3200 on Delta. United has filled up and Delta is empty.
Qatar - Cost of business class fare on Qatar is comparable to Delta’s cattle class.
Delta isn’t in the same league (not even close!) to Qatar, Emirates, Ethiopian. Comparing coach in Delta to Qatar, Qatar is significantly cheaper and so much better it’s not even close.
So, as long as there are better, lower cost alternatives to Delta, they will continue to cancel flights because no one is booking them. Until demand is not serviced by the other better cheaper carriers ATL-JNB route on Delta is dead.
I can’t come up with any other rational explanation. I am booked on United in August for the reasons above.