Incredibile che su dieci, 5 siano da/per Heathrow.
https://www.forbes.com/sites/dominicdudley/2019/08/13/most-profitable-airline-routes/#56598b0a6963
https://www.forbes.com/sites/dominicdudley/2019/08/13/most-profitable-airline-routes/#56598b0a6963