This study reviews the literature on sustainable hospitality to identify limitations, evaluate the extent of the intention-behaviour gap, and provide guidance for future research. It highlights the challenges of applying conventional behaviour theories to sustainable hospitality and calls for a re-evaluation of frameworks. The intention-behaviour gap refers to the discrepancy between consumer intentions to behave sustainably and their actual behaviour. This gap is significant in the hospitality sector, where consumers' usual contexts may undermine behavioural continuity. For example, individuals who recycle at home may not do so while on vacation. The study finds that existing research often relies on surveys and self-reported measures, which may not accurately reflect actual behaviour. It also notes that most studies focus on hotels and tourism, neglecting other sectors like restaurants and cruises. The study suggests that future research should investigate diverse sustainable practices, expand the scope of research settings, integrate existing knowledge on the intention-behaviour gap into sustainable hospitality research, and combine traditional research methods with emerging technologies. The study also emphasizes the need for more robust and generalisable findings, as well as the importance of considering cultural and economic differences in consumer behaviour. The findings reveal a predominant focus on investigating consumer intentions through self-reported measures, neglecting consumer behaviour. The study calls for a critical reassessment of established frameworks like the theory of planned behaviour and norm activation theory, and suggests that researchers should adapt these frameworks for sustainability contexts. The study also highlights the importance of longitudinal studies and mixed-methods approaches to better understand the intention-behaviour gap in sustainable hospitality. Overall, the study provides a critical perspective on the current state of research in sustainable hospitality and offers directions for future research to address the intention-behaviour gap.This study reviews the literature on sustainable hospitality to identify limitations, evaluate the extent of the intention-behaviour gap, and provide guidance for future research. It highlights the challenges of applying conventional behaviour theories to sustainable hospitality and calls for a re-evaluation of frameworks. The intention-behaviour gap refers to the discrepancy between consumer intentions to behave sustainably and their actual behaviour. This gap is significant in the hospitality sector, where consumers' usual contexts may undermine behavioural continuity. For example, individuals who recycle at home may not do so while on vacation. The study finds that existing research often relies on surveys and self-reported measures, which may not accurately reflect actual behaviour. It also notes that most studies focus on hotels and tourism, neglecting other sectors like restaurants and cruises. The study suggests that future research should investigate diverse sustainable practices, expand the scope of research settings, integrate existing knowledge on the intention-behaviour gap into sustainable hospitality research, and combine traditional research methods with emerging technologies. The study also emphasizes the need for more robust and generalisable findings, as well as the importance of considering cultural and economic differences in consumer behaviour. The findings reveal a predominant focus on investigating consumer intentions through self-reported measures, neglecting consumer behaviour. The study calls for a critical reassessment of established frameworks like the theory of planned behaviour and norm activation theory, and suggests that researchers should adapt these frameworks for sustainability contexts. The study also highlights the importance of longitudinal studies and mixed-methods approaches to better understand the intention-behaviour gap in sustainable hospitality. Overall, the study provides a critical perspective on the current state of research in sustainable hospitality and offers directions for future research to address the intention-behaviour gap.