Interval International Salary. Interval International average salary is $73,078, median salary is $74,000 with a salary range from $36,900 to $125,000.Interval International salaries are collected from government agencies and companies.nterval International salary is full-time annual starting salary. Intern, contractor and hourly pay scale vary from regular exempt employee. Compensation depends on work experience, job location, bonus, benefits and other factors.