A flat surface in hyperbolic
space ℍ3 is determined by a harmonic function as well as by its meromorphic
data. In this paper, helicoidal flat surfaces in ℍ3 are considered. A complete
classification of the helicoidal flat fronts is given in terms of their hyperbolic
Gauss maps as well as by means of linear harmonic functions. A family of
examples that provides the classification of the helicoidal flat fronts is included.
Moreover, it is shown that a flat surface in ℍ3 that corresponds to a linear
harmonic function is locally congruent to a helicoidal flat front or to a peach
front.