British Airways is the national carrier of the United Kingdom and one of the world’s largest airlines based on the size of its fleet and sheer number of passengers – 123,000 passengers fly with British Airways every day. The airline’s main hub is at London Heathrow Airport, and the airline flies to more than 200 destinations in 75 countries across the globe, including all major Austrlalian airports. British Airways flies from London's premium airports, Heathrow, Gatwick and London City, and from 16 UK airports in total. British Airways is a member of the oneworld alliance and offers travel in the classes of Economy, Premium Economy, Business and First.