when is flu season over

Flu season usually winds down by late spring, but there isn’t a single “end date” — it tapers off gradually and can linger into early summer in some places.

Typical end of flu season

• In the U.S. and most of the Northern Hemisphere, flu season runs from about October through around April, with noticeable activity sometimes lasting into May.

• Activity usually peaks between December and February, then steadily declines; by late spring, community spread is much lower in most regions.

Why there’s no exact “over” date

• Influenza viruses circulate all year, just at much lower levels outside the main season, so isolated cases can still pop up in summer.

• The exact timing can shift year to year and by location (for example, some seasons peak earlier or later, and COVID-era behavior temporarily changed patterns).

What this means for you right now

• If you are in the Northern Hemisphere and it is late spring or early summer, flu season is likely near its low point, but not zero risk.

• People at higher risk (older adults, those with chronic conditions, pregnant people) should stay vigilant for respiratory symptoms and seek care promptly if they get very sick, have trouble breathing, or symptoms suddenly worsen.

If you share your country or region and the current month, a more tailored view of “how over” flu season is for you can be given.

TL;DR: For most people asking “when is flu season over,” think: mostly over by late spring, with occasional cases still possible into early summer.

Information gathered from public forums or data available on the internet and portrayed here.