Flying Start Meaning

(idiomatic) An especially good start.

Example:   The new restaurant got off to a flying start, packing out every night.
2011 December 29, Keith Jackson, “SPL: Celtic 1 Rangers 0”[1], Daily Record:
  And six minutes in they should have got off to a flying start. Aluko caused the damage. The winger slipped away from Ledley then stood up a cross to the back post which seemed perfect for Lee Wallace charging in.
The start of a sports event in which the competitors are moving when they pass the starting line or initial jump point.