Airlines have the right to refuse to transport passengers who may pose a risk to the health and safety of other passengers or crew members. This includes passengers who are sick and could potentially spread infectious diseases.
If a passenger appears visibly ill or shows symptoms of a contagious illness, airlines may require them to provide medical clearance from a licensed healthcare provider before allowing them to board a flight. This is to ensure that the passenger is not contagious and does not pose a risk to others on the flight.
In some cases, airlines may deny boarding to a sick passenger if they are not able to provide medical clearance or if the airline believes that the passenger is too ill to travel safely. However, airlines are required to follow certain guidelines and regulations when refusing transportation to passengers, and passengers who believe they have been unfairly denied boarding may be able to file a complaint or seek compensation.
Overall, while airlines have the right to refuse transportation to sick passengers, they must balance this with the rights and needs of all passengers and follow appropriate procedures to ensure the safety of everyone on board.