Basement Whatever

For its part, eternalism is, in principle, hospitable to the idea of time travel. If the entire universe exists unconditionally, all spacetime with its varying regions simply be. We could travel to different times because all times exist. Traveling to different spatial locations is made possible by the existence of all spatial locations and the path between them. Four-dimensionally, there is a timelike path between different spacetime locations.
— Read on iep.utm.edu/eternalism/