Guide to Booking Delta Flights to Hawaii for 25,000 Korean Miles Roundtrip, 45k in First

Updated heavily 1/13/17 since you can now book these awards online.

It is cheaper to book the exact same Delta flights to Hawaii with Korean miles than with Delta miles.

Delta charges 22,500 miles each way in economy and 40,000 miles in First Class between the mainland and Hawaii or 50,000 in flat bed Delta One
Korean charges 25,000 miles roundtrip in economy and 45,000 miles roundtrip in First Class or Delta One between the mainland and Hawaii

That’s a humongous difference.