Air travel around the world has been disrupted by the terror alert in Britain. London’s Heathrow Airport, one of the busiest in the world, has been closed to all incoming traffic – meaning a sometimes major backlog of flights at departure points. Planes are also being diverted – Frankfurt International Airport is to accept some flights meant to land at Heathrow, Charles de Gaulle in Paris and Schipol in Amsterdam are helping out too. Paris has reinforced security checks for passengers travelling on British airlines – but has not raised its terror threat level.
The United States which was targeted in the plot has raised its security alert on commercial flights from the UK to its highest level for the first time. Passengers on both sides of the Atlantic have been told to expect heavy delays. The knock on effect of the alert has been felt as far a field as Australia.