roundtrip first class ticket on Delta booked with Korean Air: 45,000 miles (Delta charges 22,500 each way or 45,000 roundtrip in economy, so this is a great deal!)
For example, one very popular sweet spot is using 120,000 Virgin Atlantic miles for
a roundtrip first class ticket to Japan with ANA and only about $ 180 in fees.
Getting
a roundtrip first class ticket to the Middle East or Africa for less than 176,500 miles (Thanks Raj) and $ 404 is not too shabby, methinks.
One route which is operated by the new first class is Houston to Moscow, and at 114,750 KrisFlyer miles for
a roundtrip first class ticket, it's one of the best values.
That is enough for 1
roundtrip first class ticket to Hawaii or 2 roundtrip economy tickets to Hawaii if you transfer UR to Korean Air.
Or you could use Korean Air to get 2
roundtrip first class tickets to Hawaii on Delta and still have points leftover!