The digital transformation in the tourism industry has dramatically changed consumer behavior patterns and has led to the formation of a new concept called the “digital customer journey”; a journey in which customer decision-making, experience, and loyalty are shaped by interactions with various digital platforms. The aim of this study is to conduct a structured review of the scientific literature on mapping the customer journey in the digital tourism industry, emphasizing multi-channel interactions (website, app, social media, etc.) in three key stages: pre-trip, during-trip, and post-trip. To achieve this goal, a comprehensive search of articles was conducted in Scopus, Web of Science, ScienceDirect, and Emerald databases, relying on the eight-stage systematic review framework of Boland et al. (2013). After applying the inclusion and exclusion criteria, 21 scientific articles were identified and analyzed between 2010 and 2024. The findings showed that most studies focused on the pre-trip stage and on social media platforms and mobile applications, while the post-trip stage and the role of customer feedback received less attention. Also, the reviews showed that only a small part of the studies have integrated the entire customer journey, and mainly insular and single-stage perspectives dominate the literature. The results of this study indicate that the existing literature needs to develop more comprehensive models that cover the customer experience from the perspective of multi-channel interaction and the full decision-making cycle. It is also suggested that future studies combine data-driven approaches (such as click behavior analysis and data mining) with psychological conceptual frameworks to achieve a more accurate understanding of tourists' motivations and preferences in the digital environment.