Comment by tzs

Dynamic pressure of wind is 1/2 p v^2 where p is the air density and v is the velocity.

At sea level p = 1.225 kg/m^3. It goes down as altitude goes up. At sea level the dynamic pressure at 800 km/hr would be about 4.4 PSI.

At 20000 ft the air density is about half that of sea level, so around 2.2 PSI wind pressure. It would be around 1.4 PSI at 35k ft.

At cruising altitude planes are typically about 8 PSI above the outside pressure.

It would be maybe an interesting project for someone more ambitious then me to get a speed vs altitude profile of a typical airline flight and an altitude vs cabin pressure profile and figure at what part of a typical flight the screws on a plug window are resisting the most force.