- L airline refers to the name or designation of an airline company, but without any specific context or information provided, it is difficult to determine which airline is being referred to. There are many airline companies around the world, each having their own unique name or logo. Some popular examples of airline companies include American Airlines, British Airways, Delta Air Lines, Emirates, Lufthansa, etc. If more specific information is provided, it would be possible to identify the specific airline being referred to as "L airline."