at the last minute/moment

at the last minute

At the last possible instant or opportunity. I know they've been squabbling for weeks, but I think they'll reach an agreement at the last minute. Yeah, Stu made some vacation plans at the last minute, so he is going to be out of the office next week.
See also: last, minute
Farlex Dictionary of Idioms.

at the last minute

Fig. at the last possible chance; in the last few minutes, hours, or days. (Often an exaggeration.) Please don't make reservations at the last minute. Why do you ask all your questions at the last minute?
See also: last, minute
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

at the last minute

At the latest possible moment or opportunity. For example, Jim couldn't get a reservation because he had called at the last minute. Also see at the latest; eleventh hour.
See also: last, minute
The American Heritage® Dictionary of Idioms by Christine Ammer.

at the last ˈminute/ˈmoment

as late as possible; almost too late: Why do you always have to arrive at the last moment? ▶ ˌlast-ˈminute adj.: last-minute changes of plan, decisions, preparations, etc.
See also: last, minute, moment
Farlex Partner Idioms Dictionary
See also:
  • at the last minute
  • gasp
  • at the last gasp
  • the last minute
  • last-minute
  • saloon
  • at the last chance saloon
  • in the last chance saloon
  • last chance (for/at/to do something)
  • the last chance saloon