If you’re wondering about how to book a first class flight, look no further. Delta airlines offer first class option.The price of Delta First Class varies based on route, demand, season, and booking time. For more info about Delta Airlines First Class cost,visit airline's official website or call them and read blog provided at the link-
https://faresfirstclass.odoo.com/blog/flights-1/what-does-1st-class-get-you-on-delta-5