Delta Airlines Business Class 

Delta’s class names are often confusing, as Delta doesn't provide a real first-class . The very best level of luxury that Delta offers is their Delta Airlines Business class. If you research this class, you will find that this is often the sole class that gives lie-flat seating, a standard seating option in other airlines’ business class.

https://reservationsdeltaairlines.com/delta-airlines-business-class/