In recent years, public trust in companies has been adversely impacted due to the increased number of financial scandals worldwide. Several corporate governance mechanisms have been introduced at the institutional and organizational levels to prevent all these unethical practices. Thus, the companies begin to integrate information about their corporate governance practices in response to stakeholder demands of social responsibility and accountability. While there is extensive research on the relationship between corporate governance mechanisms and voluntary disclosure in Malaysia, the trend of corporate governance information disclosed in the annual reports of airline companies has received scant attention. The purpose of this paper is to analyse the corporate governance information disclosed in the annual reports of AirAsia from the year 2005 to 2021 using the isomorphism tenet under the institutional theory. This study presents the results of interpretive textual analysis of the corporate governance practices of an award-winning of low-cost carrierLow-Cost Carriers (LCCs) from 2005 to 2021 from the isomorphism perspective. The quantity of corporate governance reporting is measured based on the number of pages in the Statement of Corporate Governance section. It was found that coercive and normative isomorphism explain the variation in corporate governance disclosure. While the exact nature of these market changes was beyond the scope of this paper, it is concluded that changing patterns of corporate governance reflect the increased complexity of the messages being conveyed in disclosure.