The lighter weight of the A318 gives it an operating range 10% greater than the A320, allowing it to serve some routes that the A320 would be unable to: London – New York, Perth–Auckland and Singapore–Tokyo, for instance.
Ľahší A318 má o 10 % väčší dolet ako A320, čo mu dovoľuje obsluhovať niektoré linky, ktoré A320 obsluhovat nemôže, napr. Londýn - Jeruzalem a Singapur - Tokio.