“The Traitors” is set to return in early 2026, but the exact start date depends on whether you mean the UK version or the US version.

When does Traitors start in 2026?

  • The US version of The Traitors (Season 4 on Peacock) is scheduled to premiere on Thursday, 8 January 2026, with the first three episodes dropping that night at 9/8c.
  • The UK version of The Traitors (Series 4 on the BBC) is launching on New Year’s Day, 1 January 2026, in the evening, with multiple episodes airing across the first few nights.

If you say “when does traitors start 2026” in a general sense, most TV listings and news blurbs are currently pointing to:

  • 1 January 2026 for The Traitors UK on BBC.
  • 8 January 2026 for The Traitors US on Peacock.

So the show effectively kicks off the year on 1 January 2026 in the UK and then starts the following week in the US.