From 1989 to 2001, what foreign airline immodestly billed itself as "The World's Favourite Airline"?

Headquartered in London, British Airways is one of the most successful airlines of all-time, and it appears they know it! The company's slogan "The World's Favourite Airline" ran from 1989 to 2001, until it was dropped in response to Lufthansa's increase in passenger numbers.

Asked by Rachel Bortles · Last updated 4 years ago · 111.9K views · SOURCE