International passenger airplanes from the biggest down as well as freight planes.
The heat of the engines, especially jets, leaves a trail of white condensation in the cold atmosphere.
Almost all aircraft flying in the high, cold sky leave contrails. These are trails of hot air from engines running in very cold air. In World War 2 the bombers going up high in early mornings left very visible trails.
Contrails are just condensation from the hot gases leaving the engine of the plane interacting with the cold air in the upper atmosphere.
To be an airplane with jet engines? All jet airplanes leave contrails.
Planes that fly at high altitudes, typically commercial jets, leave vapor trails, also known as contrails. These trails are composed of water vapor, created when hot exhaust gases combine with cold, humid air in the atmosphere.
airports
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Contrails (short for "condensation trails") or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets. If the air is cold enough, this trail will comprise tiny ice crystals.
The white trails left behind jets are known as contrails.
No that's not true. They never do.
By ships and planes.