PurposeThis paper presents, through the analysis of a case study, a model based on a systemic approach that proved successful for the design and implementation of an integrated management system (IMS) in an airline, and provides guidelines and practical recommendations that may be of use to other sectors of activity when designing and implementing an IMS.Design/methodology/approachData for this paper were collected through direct analysis and implication in the process of implementation of the IMS. Also a literature review was conducted.FindingsTangible and intangible benefits were identified as derived from operating one IMS, such as cost savings, better use of resources, improved internal communication, stronger customer orientation and employee motivation. For these benefits to be realised it is essential to take into account several critical factors and be aware of the challenges accompanying integration of management systems, as detailed in the paper.Practical implicationsThis paper provides guidelines and recommendations for organisations seeking to implement and integrate several standards, being general or sectoral, particularly if they operate in highly complex industry sectors.Originality/valueThis paper incorporates the integration of sectoral standards, which the literature has not covered very widely. The research has wider value through transferable applications and experiences for other industry sectors.