Heathrow Airport is dominated by British Airways, which owns 40% of the slots available at the airport. The majority of BA services operate from Terminal 5, with the exception of some short-haul and mid-haul flights at Terminal 1 arising from the purchase of BMI and some short-haul flights at Terminal 3, owing to a lack of capacity at Terminal 5.
British Airways serves over 160 destinations, including six domestic. It is one of the few airlines to fly to all six permanently inhabited continents, along with Air France, Delta Air Lines, Emirates, Etihad Airways, Korean Air, Qantas, Qatar Airways, Singapore Airlines, South African Airways and United Airlines.