 Michelle Erica Green, writing on the website "TrekNation", enjoyed the performance of Anthony Montgomery after wondering why he hadn 't been featured that much so far in Enterprise. She said that the sub plot was "witty" but didn't feel that the Mayweather family were well characterized. She found the episode frustrating because it seemed "to have all the elements in place to be a good episode". Jamahl Epsicokhan at his website "Jammer's Reviews" was neutral about the episode, saying that it was "Not bad, but not particularly good or conclusive, either. Just simply' there. '". He gave the episode a score of two and a half out of four. In scores given by readers of the website "TrekWeb" for the second season of Enterprise, "Horizon" was ranked 21st out of 26 episodes by average score. Based on the number of ten out of ten votes, it was placed last overall.
