Delta will charge 425,000 SkyMiles one-way from Atlanta to Santiago, Chile in business class on April 17th.
This date is not a peak travel day nor is the flight fully booked. Delta's inventory shows wide availability for its cheapest fares with no reservations currently in the business class cabin.
Interestingly, Delta offers award space on this flight to its partners. Air France KLM Flying Blue members can book the same flight for just 90,000 Flying Blue points. This means Delta charges its own members 4.7 times the miles that Air France frequent flyers pay for the same flight.