DFW-ORD (777)
DFW-MIA (777)
MIA-JFK (762)
Bear in mind, however, that it is not actually a "BC upgrade" because the service is Y service. All that is there is the seat. Also, sometimes DFW-LAX is run on a 777, but not now. However, with the new routes that have been announced over the past couple months, these will become less and less, as more 777s are needed for int'l flights.