A system for electric aircraft fleet management for at least an electric aircraft is provided. the system includes a computing device communicatively connected to at least an electric aircraft, wherein the computing device is configured to receive a plurality of measured aircraft operation datum from a sensor disposed on the at least an electric aircraft, select a training set as a function of each measured aircraft operation datum of the plurality of measured aircraft operation datum and the at least an electric aircraft, wherein each measured aircraft operation datum of the plurality of measured aircraft operation datum is correlated to an element of modeled aircraft data, and generate, using a machine-learning algorithm, an aircraft performance model output based on the plurality of measured aircraft operation datum and the selected training set, wherein generating an aircraft performance model includes generating a performance alert.