Originally Posted by
3Cforme
Classic in coach or business (not Premium Voyageurs nor First) will be your only opportunities to redeem DL miles for AF/KL-operated flights.
The Interactive Route Map shows a DL-operated BOM-AMS route that should be searchable for awards on delta.com, but no DL-operated destinations from DEL.
And when looking at classic, ignore the FB pricing in both miles and cash. It will be much lower in cash and the mileage will be based on the DL award chart, not the FB chart.