The Big Brother finale typically runs about two hours for recent U.S. seasons.

Quick Scoop

For the most recent U.S. season (Big Brother 27 on CBS), the finale was scheduled as a two‑hour live event, airing in a 120‑minute block including commercials. This window covers the final Head of Household competition, the last eviction, jury questioning, and the winner reveal.

If you are asking about a specific country or season (for example, UK Big Brother, Canada, or earlier U.S. seasons), runtimes can vary a bit by region and year, so sharing the exact version and season number will help narrow it down.

If your TV guide lists start and end times (for example, 8:30 p.m. to 10:30 p.m.), that usually indicates a standard two‑hour finale slot for Big Brother.

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