The highest level, e.g. "The Premiership is the top flight of English football". Often used in sentences wondering how good a player is, e.g. "Smith was the top scorer in the 2nd division last year, but there are doubts whether he has the skills to be successful in the top flight."
Browse the following links to other content related to the term 'The top flight' from the 'Leagues, Divisions and Cups' vocabulary category: