How Fast Is Housefly?

Houseflies fly at about 7 km/h — but the real wonder is their reaction time. They can change direction in 30 milliseconds, faster than your nervous system can fire a single signal in response. Which is exactly why they always escape your swat.

Houseflies have eyes containing 4,000 individual lenses each, giving them an almost 360-degree field of view with no need to turn their head.

• Slightly faster than brisk walking
• They see your swat coming before you do