This article evaluates the impact of Brexit on Londoners' outbound travel intentions. It embeds a comparative study as it employs two research studies, before (N = 307) and after (N = 278) the Brexit referendum. Using fuzzy-set Qualitative Comparative Analysis, the results highlight the pre- and post-referendum change in impact to overseas travel intention concerning price and quality issues, destination selection motivations, and perceived risks. They further establish the significance of travel importance, age, and annual income with regard to outbound decision-making. The research also compares the results with the dominant linear analysis modes (regression; Cramer's V), highlighting nonlinearity as the most appropriate for the examination of complexity aspects, and further progresses from fit to predictive validity.