A flag 'flies' in front of the building. = There is a flag 'flying' in front of the building.
The restaurant 'made a flying start' by filling up on opening night.
After some difficult years, the company is 'flying high' again.
(..) Keep your eyes closed. Do you trust me ? l trust you. All right... Open your eyes. l'm flying ! Jack ! # Come, Josephine, on my flying machine,... # ..going up, she goes, up, she goes... (..)1997 Titanic