A flag carrier is an airline that is owned or heavily supported by the government of a country. These airlines often represent their nation and are typically the largest in terms of passenger capacity and international routes. They play a crucial role in promoting tourism and trade, connecting their home country to the rest of the world. Flag carriers usually operate under the national flag, which symbolizes their connection to the country. Examples of flag carriers include British Airways for the United Kingdom, Air France for France, and Lufthansa for Germany. These airlines often receive government subsidies to maintain their operations and competitiveness.