E.J. Mackernutt, Jr., an 11-year-old boy who has always been fascinated by space and astronauts, sneaks into Cape Kennedy and becomes a stowaway on a spaceship scheduled for a lunar landing. After he is discovered, NASA at first cancels the landing, but E.J. and the astronauts convince them to go forward with it. Problems arise when one of the astronauts is incapacitated by illness and the other two are stranded on the moon's surface, but E.J. is able to command the space capsule and save the day.
Unfortunately the movie Stowaway to the Moon is not yet available on HBO Max.
| Directing | Andrew V. McLaglen | Director |
| Writing | Jon Boothe | Writer |
| Sound | Patrick Williams | Original Music Composer |
| Writing | William R. Shelton | Novel |
| Camera | J.J. Jones | Director of Photography |
| Art | Allen E. Smith | Art Direction |
| Editing | John F. Schreyer | Editor |
| Production | John Cutts | Producer |
| Production | Jack Baur | Casting |
| Directing | Jack Barry | Assistant Director |
| Production | Maurie M. Suess | Unit Production Manager |
| Crew | Joe Zomar | Special Effects |
| Sound | Lionel Newman | Music Supervisor |
| Crew | Joe W. Schmitt | Technical Advisor |
| Production | Carl Kugel | Associate Producer |
| Crew | Joseph Silver | Post Production Supervisor |
| Art | Robert De Vestel | Set Decoration |
| Production | Mark Evans | Production Supervisor |
