Patients with congenital diaphragmatic hernias (CDH) usually present in the neonatal period with respiratory distress. Delayed presentation of CDH in adults is rare and difficult to diagnose. We present a 42-year-old female patient who came with complaints of epigastric pain and breathlessness on exertion. X-ray and CT scan of the chest revealed a right-sided Morgagni hernia. The contents of the hernia were reduced and a primary tension free repair of the hernia defect was done through laparotomy. The postoperative course was uneventful. A strong clinical suspicion and good interpretation of radiological images help diagnose CDH which present late. Prompt surgical repair is mandatory and the outcomes are usually favorable. Primary repair is usually successful; however, mesh repair may be required for larger defects.