Thanks to comments above. It does look like the plane is positioning to BNA on the 8th to pick people up. The return flight is an unusual Nonstop BNA-LAS later that day.

Guessing DL is making use of all their equipment for Vegas runs.

extra intl flights https://www.routesonline.com/news/38...ional-flights/


2017 attendance numbers from CES website. Did not copy well.Domestic: 123,294 Intl : 60,219