Title: Data from "Front-mediated melting of isotropic ultrastable glasses", Elijah Flenner, Ludovic Berthier, Patrick Charbonneau, and Christopher J. Fullerton to be published in Physical Review Letters. Description: The data files are composed of the data found in the figures of "Front-mediated melting of isotropic ultrastable glasses". They include text formatted .dat files of the raw data for each figure. The subfolders indicate which figure corrresponding to the associated figure in the paper. Each folder has a README file describing the data. Overview of Figures: Fig 1: The equilibrium relaxation time as a function of temperature and inverse temperature. Fig 2: The overlap function for different layers of the melting film and the melting time as a function of waiting time. Fig 3: The front velocity as a function of the inverse of the melting temperature and the alpha relaxation time at the melting temperature. Fig 4: The crossover length as a function of melting temperature.