National Airline is airline whose operating revenue lies between $100 million and $1 billion per annum.
A "National Airline" in the travel, transport, and hotel context is an airline that is owned and operated by a country's government or state. National airlines typically operate under the flag of their country of origin, and they may be responsible for connecting the country with other parts of the world through scheduled international flights, as well as providing domestic air transportation within the country.
For example, Air France is the national airline of France, British Airways is the national airline of the United Kingdom, and Qantas is the national airline of Australia.
National airlines often play an important role in the country's economy and transportation infrastructure, connecting the country with other parts of the world for trade, tourism, and business. They may also be responsible for promoting the country's image and culture abroad, and may receive government support in the form of subsidies, tax breaks or other incentives.
National airlines may also have special privileges and advantages, such as landing rights in certain countries, or exclusive rights to operate certain routes, and they may also have a monopoly on certain domestic routes, which allows them to charge higher prices.