Having the middle seat open, was a big plus for those that wanted comfort and were anxious before the vaccine rollout. Unlike UAL, Delta was easy to work with at the beginning of the pandemic to get a refund. Delta costs a little more, but you do notice that they are a better run airline compared to UAL and AAL. Hopefully with the CDC rolling back Covid restrictions, DAL can bring back its catering and beverage service to pre-pandemic levels.