ABSTRACT Purpose This study explores buyers’ online omnichannel transaction experience, focusing on integrating livestreaming commerce and online store channels. It shifts the spotlight from the predominant emphasis on online and offline channel integration to the online-only omnichannel environment. Design/methodology/approach Grounded in social cognitive theory, this study adopts a multi-method approach, integrating structural equation modeling (PLS-SEM) and fuzzy set qualitative comparative analysis (fsQCA) to capture individual and complex interactions among factors. Findings The study finds that internet usage significantly enhances online omnichannel experience by strengthening the positive effects of factors. While PLS-SEM results assert that channel integration quality positively impacts online omnichannel experience, fsQCA results indicate improved online omnichannel experience can be achieved in configurations where channel integration quality is absent. Research implications The study introduces a unique conceptualization of online omnichannel, revealing symmetric causal mechanisms of online omnichannel experience and improving the findings with asymmetric mechanisms, highlighting new insights, such as achieving higher experience without extensive shopping innovation or channel integration quality. Practical implications This study can guide practitioners in understanding the configuration of causal elements that enhance buyers’ omnichannel transaction experience through integrated online channels. Originality This research employs symmetric and asymmetric approaches to investigate transaction experience in an omnichannel setting, whereas the conceptualization of omnichannel emphasizes the integration of online-only channels.