When Is Flu Season 2024 In Usa.  — in the u.s., flu season can start as early as october. As many as 40 children and teenagers, including five babies younger than 5 months old, have died from the flu so far this.

In general, flu season in the us lasts from october to as late as may, peaking between december and february. But sometimes, it doesn’t rear its head until january or february.