A national airline is a carrier that is owned or operated by a country, often serving as a flag carrier. It typically represents the nation in international air travel and is responsible for connecting the country to various global destinations. National airlines often receive government support and play a crucial role in promoting tourism and trade. These airlines usually operate under specific regulations and standards set by the government. They may also participate in alliances with other airlines to expand their reach. Examples of national airlines include British Airways, Air France, and Qantas.