Be off for something

Pro Tip 1/3

Departure Intent

Indicates a person's intention to leave shortly for another destination, often casually.

Just to let you know, I'm off for a meeting in ten minutes.

Pro Tip 2/3

Immediate Future

Often implies an action that will happen in the near future, not necessarily immediately.

We're off for our vacation early tomorrow morning!

Pro Tip 3/3

Casual Tone

Used in informal situations, like talking to friends or family, rather than formal occasions.

I'm off for a quick lunch break, I'll catch up with you later.