One or more processors in a communication system allocate a selected connectivity path from a plurality of connectivity paths supported by a plurality of access technologies. The selected connectivity path is allocated to a service flow between a communication device and a core network. One or more available access channels are assigned to the service flow for the selected connectivity path. Network conditions and performance of the service flow are monitored on the one or more available access channels. The selected connectivity path is modified based on the network conditions and the performance of the service flow seamlessly to the existing applications or service flows. In some cases, criteria for modifying the selected connectivity path are modified for a predetermined time interval in response to modifying the selected connectivity path, e.g., by modifying threshold values that are used to determine whether to modify the selected connectivity path based on a comparison of the threshold values to the network conditions or the performance of the service flow.