that ship has sailed

that ship has sailed

Some possibility or option is no longer available or likely. A: "I was hoping to get to bed early tonight, but clearly, that ship has sailed." B: "Well, yeah, it's already midnight." If you were hoping to ask Mollie out, that ship has sailed—she's going to the dance with Peter.
See also: sail, ship, that
Farlex Dictionary of Idioms.
See also:
  • sail from some place to some place else
  • bed down
  • bed down (some place)
  • bedding
  • go to bed with
  • go to bed with (one)
  • go to bed with somebody
  • sail in
  • healthy
  • early to bed, early to rise (makes a man healthy, wealthy, and wise)