When Is It Safe to Fly? Early Air Travel After Small Traumatic Pneumothorax

Commercial air travel exposes passengers to reduced cabin pressures, causing intrathoracic gas volume to expand (Boyle's law). Guidelines recommend waiting 7-14 days after radiographic resolution of a pneumothorax before flying; however, such recommendations may not reflect emerging evidence for select cases. We report a case of a healthy 51-year-old man with a small (< 10%) traumatic pneumothorax who flew domestically and internationally within 4 and 9 days of diagnosis against medical advice. He remained asymptomatic, with serial chest X-rays indicating stability and eventual resolution of the pneumothorax. The patient demonstrated clinical and radiographic stability despite commercial cabin pressure changes and high-altitude activity. The presented case supports and extends a growing body of research, suggesting that patients with normal oxygen saturation on room air may safely tolerate air travel with a small, stable, traumatic pneumothorax. This case highlights the potential need for individualised risk assessment when advising travel delays.