As long as the family members think that the elderly are healthy, they can be arranged to board the plane. However, the elderly can only board the plane if they show the health certificate issued by the hospital. Passengers over the age of 70 must provide a valid physical examination report issued by the hospital within six months (including cardiovascular and respiratory items and other special care that needs to be provided) when purchasing tickets, or show a health certificate issued by a medical unit at or above the county level within 96 hours before the flight departure when purchasing tickets, and they are in good health and do not need special care. Only after being audited by the airline can it be allowed. In addition, airlines have different regulations for the elderly to fly. Please contact the carrier airline before booking the air ticket, and then book the air ticket after confirmation to avoid unnecessary trouble.