Purpose: While resuscitative thoracotomy in trauma is well-studied, data on non-emergent thoracotomy—particularly in older adults—remain limited. This study evaluated whether age predicts outcomes following non-emergent thoracotomy in older trauma patients. Methodology: We conducted a 5-year retrospective analysis of the American College of Surgeons-Trauma Quality Improvement Program (2017-2021), including trauma patients aged ≥ 60 undergoing thoracotomy (excluding those performed in the ED or on direct OR transfer). Patients were grouped by age (60-69, 70-79, and 80-89). Primary outcomes were mortality, major complications, and prolonged ventilation (>7 days); secondary outcomes included hospital and ICU length of stay. Multivariable regression assessed age's independent effect on outcomes. Results: Among 3,673 older adult patients who underwent thoracotomy, 641 were non-emergent. Mean (SD) age was 70 (7) years, and 72% were male. Median [IQR] ISS and chest AIS were 12 [9-17] and 3 [2-4]. Median [IQR] time to thoracotomy was 51 [21-114] hours. Age distribution was 54% (60-69 years), 33% (70-79 years), and 13% (80-89 years), with no significant difference in ISS, chest AIS, or thoracotomy timing between groups. However, frailty was higher in the 80-89 group (p=0.002). Univariate analysis showed no differences in mortality (p=0.128), major complications (p=0.651), prolonged ventilation (p=0.358), hospital LOS (p=0.436), or ICU LOS (p=0.975). Multivariable analysis revealed no age-related association with mortality (aOR: 1.414, p=0.102), major complications (aOR: 0.850, p=0.284), or prolonged ventilation (aOR: 0.780, p=0.155). Conclusion: Nine in ten older adult trauma patients who underwent non-emergent thoracotomy survived to discharge. Increasing age did not predict adverse outcomes, indicating that non-emergent thoracotomy may remain appropriate in this population.