A lossless data traffic deadlock management system includes a first networking device coupled to a second networking device and a third networking device. The first networking device provide a lossless data traffic flow on a first data traffic path via the second networking device and to a destination. The first networking device then receives a congestion communication from the second networking device that is indicative of a deadlock associated with the second networking device. In response, the first networking device identifies the first data traffic path as a congested route, and the identification of the first data traffic path as the congested route causes the first networking device to provide the lossless data traffic flow on a second data traffic path via the third networking device to the destination.