This study examines the determinants of travel behaviour among older adults in the Klang Valley, focusing on weekly travel frequency and transport mode choice. Using survey data from 497 individuals aged 60 years and above, Binary Logistic Regression is applied to identify factors influencing frequent travel and the use of non-private transport modes. The findings show that older men and individuals with higher household incomes are significantly more likely to travel frequently (≥6 trips per week). Medical appointments emerge as the strongest driver of frequent travel (OR = 5.31), highlighting the importance of healthcare-related needs as compulsory mobility drivers in later life. In contrast, chronic illness (OR = 0.33) and walking difficulties (OR = 0.27) substantially reduce the likelihood of frequent travel, underscoring the constraining effects of health limitations on mobility. In terms of transport mode choice, car and motorcycle ownership significantly decrease the likelihood of using public, active, or multimodal transport, reinforcing continued reliance on private vehicles among older adults with access to them. Conversely, possession of the RapidKL concession card significantly increases the probability of using non-private modes (OR = 2.94), indicating the effectiveness of fare subsidies in promoting public and active transport use. Gender differences are also evident, with older women more likely to rely on non-private transport modes than older men. Overall, the findings demonstrate that travel behaviour among older adults is shaped by a complex interaction of individual characteristics, economic capacity, health conditions, and transport accessibility. This study provides empirical evidence to inform more inclusive and age-friendly urban mobility policies that support active ageing in rapidly urbanising Malaysian cities.