Typically the best prices you can find from the east coast (we fly out of Newark) are around $700. I was looking a few months out for a trip that we just took last week and found low $700. You might be able to find a deal to LAX and fly from there if you switch carriers.
Just moved to San Diego - more DLR trips here we come!!
DLR 2004, 2005, 2006, 2008, 2009
Disneyland Paris 2003
WDW 1997, 1999, 2001, 2001, 2005, 2006, 2011 (DH's first trip)