that train (has) already left the station

that train (has) already left the station

Some option, choice, or opportunity is no longer available or possible. I thought I'd still be eligible for their internship program, but it sounds like that train already left the station. If you were hoping to ask Mollie out, that train has already left the station—she's going to the dance with Peter.
See also: already, left, station, that, train
Farlex Dictionary of Idioms.
See also:
  • that ship (has) already sailed
  • that train has left the station
  • fetch and carry
  • fetch and carry (for someone)
  • joe job
  • stay on
  • get a/(one's) foot in the door
  • get a/(one's) leg in the door
  • have a/(one's) foot in the door
  • a leg in the door