According to Airlines for America, a Washington DC-based trade group of North American Airlines, at least 17 other international and domestic airlines have had either to restructure their ownership to ensure survival or cease operations completely. Colombia’s Avianca, Mexico’s Aeroméxico, Chile’s LATAM, German Air, Alitalia, Air Mauritius, and South African Airways are other airlines in trouble.
The world’s busiest airports have coordinated slots during which airlines can land and depart. Slots are needed because an airport’s infrastructure isn’t sufficient to handle the demand for airlines to operate from that airport. Countries usually give lucrative daily slots to their domestic airlines.