<P> The world 's largest airlines can be defined in several ways . American Airlines Group is the largest by its fleet size , revenue , profit , passengers carried and revenue passenger mile . Delta Air Lines is the largest by assets value and market capitalization . Lufthansa Group is the largest by number of employees , FedEx Express by freight tonne - kilometers , Ryanair by number of international passengers carried and Turkish Airlines by number of countries served . </P>
<P> The world 's largest airlines can be defined in several ways . American Airlines Group is the largest by its fleet size , revenue , profit , passengers carried and revenue passenger mile . Delta Air Lines is the largest by assets value and market capitalization . Lufthansa Group is the largest by number of employees , FedEx Express by freight tonne - kilometers , Ryanair by number of international passengers carried and Turkish Airlines by number of countries served . </P>
who has the most aircraft in the world
who has the most aircraft in the world
American Airlines Group
American Airlines Group