Originally Posted by rwoman

Using miles to UG on Delta requires a M, B, or Y fare. While there are some reports of UGs being offered on some routes at OLCI ($700+ IIRC), it is not all that common.

DL is not likely to give you EC for free. See http://www.flyertalk.com/forum/delta...t-seating.html to help you decide if it is worth the money.