I'll (have to) let you go

I'll (have to) let you go

A phrase said to facilitate the end of an interaction with someone, often over the phone. It sounds pretty busy there, so I'll let you go. Call me tomorrow, OK? Sure, I'll let you go, but let's make a lunch date soon. Not that running into you in the grocery store isn't lovely!
See also: go, let
Farlex Dictionary of Idioms.

I'll (have to) let you go.

Fig. It is time to end this phone conversation. Well, I'll let you go. It's getting late. I have to go to work early tomorrow, so I'll let you go.
See also: go, let
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • I'll let you go
  • beck and call
  • (as) sure as eggs (is eggs)
  • great minds
  • great minds think alike
  • booty call
  • a penny for them
  • be twiddling (one's) thumbs
  • be twiddling your thumbs
  • from my cold, dead hands