To express “cancel plans” in English, you can say:

  • “How to cancel plans”
  • “How to cancel an appointment”
  • “How to withdraw from plans”
  • “How to cancel an event or meeting”
  • “How to reschedule plans”

Each of these phrases conveys the general idea of canceling or altering previously made plans. The specific choice might depend on the context in which you’re communicating.