How can an airplane fly? How can an airplane fly? Thanks to physicists as Bernoulli, Newton or Venturi this can be possible. We have several forces during the flight called sustentation, weight, impulse and drag. If we have in mind the law by Bernoulli which say Pressure plus speed is equal a constant which never change, and , we can see how plane wing is inclinated we realize what happen. When air pass throught the plane, in the top of plane wing we can check speed increase instead of pressure. This causes that the pressure be lower than below the plane wing. Pressure of down makes that the aircraf keep in the sky. I think must be exciting to see into cockpit how aircraf can be flight along the world.