Planet Fitness Salary. Planet Fitness average salary is $33,280, median salary is $33,280 with a salary range from $33,280 to $33,280. Planet Fitness salaries are collected from government agencies and companies. Each salary is associated with a real job position.Planet Fitness salary statistics is not exclusive and is for reference only.lanet Fitness average salary is $33,280, median salary is $33,280 with a salary range from $33,280 to $33,280.