Planes CAN fly lower over water, as water is flat. There are less things to collide with.
But usually they DON'T fly lower over water - unless they need to for some other reason, like spotting ships, oil spills or something.
At low altitude, the air is thicker and cause more drag, which increases fuel consumption. For longer hauls it's better to be up where air is thinner and easier to travel through.
Plains don't fly - plains are flat land areas. Planes fly.
fuel
Pressurization keeps the people alive.
Gravity and aerodynamic resistance.
Airplanes fly inside the atmosphere which is made up of 4 levels. The atmosphere starts at sea or ground level and when it ends you are in outer space (no longer on earth). Majority of all planes fly in the first level of the atmosphere called the Troposphere which ends around 50K feet. Military jets and spy planes usually fly in the second atmosphere called the stratosphere.
There are millions of planes that fly over Cuba on a daily basics. There is to many to count.
The height of planes over the Atlantic30000 feet over the sea
yes
Most commercial jet liners fly in the stratosphere. Some military aircrafts fly higher than that. Small planes fly lower than the jet liners.
You wouldn't. You could fly over it or through it. Weather planes fly all the time through hurricanes. That's how we know how powerful they are and have data from them.
That depends on where you fly from, but if you fly from USA you have to cross the Atlantic Ocean.
He had to fly over the Atlantic Ocean.
The planes that fly over Ukraine daily depend on how many flights go out daily,and the delays and cancelations that occur daily.
Helicopters fly somewhat close to the ground. They fly near the troposphere. They fly at a lower altitude than planes.
Of course, planes can fly.
If you are flying from North America, then yes. Most planes usually fly up north and later curve back south toward Japan, so you would be flying over the extreme Northern part of the Pacific Ocean.
The Atlantic Ocean