How long can one survive after advanced lung cancer spreads to the esophagus is related to the severity of the disease, age, treatment plan and so on, so it is impossible to give a precise answer. 1. Severity of illness: advanced lung cancer spreading to esophagus is only a general overview, while the specific condition still varies a lot. This will directly reflect on the survival time of the patient, so it is recommended to go to the local hospital for detailed medical examination and consult the doctor. 2. Age: The age of the patient is different, the health of the body organs and physical quality are not the same. Usually, adults are more resistant to diseases than the elderly, so their survival time may be longer. 3. Treatment plan: there are many treatment methods for advanced lung cancer spreading to esophagus, such as surgical lobectomy, methotrexate and other drugs for radiotherapy and so on. And doctors need to make reasonable treatment plan according to patients’ physical quality, which will also affect the survival time. Lung cancer spreading to esophagus in late stage indicates that the condition is critical, so the patient should follow the doctor’s advice and take treatment measures in time. This can prolong the patient’s life.