Why is the plane going east going faster in the West?

The plane went east faster than the West, even if the same distance. The reason for that confusion is here.

Why fly east faster in the West?

The flights have the same travel distance, but different departure and arrival points have different flight times, although the speed of the aircraft is nearly the same, have you ever noticed?

Rotation speed is different at each point on Earth.

To explain this, go deep into the speed of rotation around the Earth's axis , at the equator, that speed is about 1670km / h, however, at latitude 45, the speed is only about 1180km / h, and At the North pole, the speed will be 0km / h.

So things on the ground, and the air layer at the equator, for example, also have a velocity of 1670km / h on the Earth's rotation.

And also because of the air.

Therefore, when taking off in the East, the direction of the Earth's rotation, the aircraft will fly in the forward direction , ie the speed of the aircraft will now be 160km / h with take-off speed plus 1670km / h. The rotation of the Earth, the gain a bit more speed leads to a shorter time to travel.