Internal Marketing (IM) is considered a sustainable management philosophy using a marketing-like approach to motivate employees and achieve long-term objectives such as increasing employee retention. This paper aims to investigate the effect of internal marketing mix elements (internal product, internal price, internal promotion, internal distribution, internal people, internal processes and internal physical evidence) on employee organizational commitment of the airlines in Egypt. Using a sample of 405 employees at different administrative levels in airlines. The questionnaire forms were used and distributed on paper and electronically in 18 airlines in Egypt. Descriptive statistics, Pearson correlation and regression analysis were used to find the results. The paper found that the internal marketing elements (internal product, internal price, internal promotion, internal people, internal processes) have a statistically significant effect on the employee organizational commitment in airlines. Based on the study results, the researchers recommend the managers and decision makers of the airlines in Egypt to enhance the internal market research and segmentation, training programs, role fit and clarity, career advancement for all employees, financial rewards, internal communication, automating tasks, applying the delegating and supporting style of management, and improving their work environment. HR and Marketing should work together in the airlines to help the employees enjoying their job experiences, improving their quality of life and then increasing their organizational commitment.