Despite population-based cancer screening programmes effectively decreasing mortality, participation rates are unsatisfactory for both cervical and breast screening. This research tested an integrated theory of planned behaviour model applied to cervical cancer screening (CCS; Study 1) and breast cancer screening (BCS; Study 2) attendance. Women residing in Campania (Italy) and belonging to each screening target population joined two independent surveys (Study 1: n = 332, Mage = 41.03, SD = 11.45; Study 2: n = 298, Mage = 55.03; SD = 5.17). In both studies, screening behaviour was predicted by intention to undergo the screening, action and coping planning. Significant predictors of intention were subjective norms, perceived behavioural control and self-identity in Study 1, and subjective norms, anticipated regret and self-identity in Study 2. A mediation analysis confirmed the role of action and coping planning in the intention-behaviour relation. This model can guide forthcoming interventions and steer enhancements in healthcare access.