"Babel One" was first aired in the United States on UPN on January 28, 2005. The episode received a Nielsen rating of 1.7/3 percent. This means that it was seen by 1.7 percent of all households, and 3 percent of all of those watching television at the time of the broadcast. This was an increase in ratings compared to the previous week's episode, but saw a lower overall number of viewers. "Babel One" was watched by 2.53 million viewers, the lowest overall number of viewers to date for a first run episode of "Enterprise".