Flights are available year round, but they can be quite cold during the winter months; as such, be sure to dress appropriately, especially for open-air flights. Only one passenger may fly at a time, and they must be under 110 kilograms in weight. Underage individuals can fly as well, but they must have parent permission. Lastly, Nepal requires all international travelers (with the exception of Indian nationals) to hold or purchase a valid visa.