Is Justice League Unlimited renewed or cancelled?

Ended

Justice League Unlimited has ended — it concluded its planned run.

Justice League Unlimited: release calendar, where to watch & episodes
FAQ

Justice League Unlimited — frequently asked

Is Justice League Unlimited renewed or cancelled?

Justice League Unlimited has ended — it concluded its planned run.

How many seasons of Justice League Unlimited are there?

Justice League Unlimited has 3 seasons so far.