Is it possible to stop a passenger plane in the air?

Planes do not stop in the air because if they do not move forward at a sufficient speed, they will fall to the ground. If for some reason it were to become necessary for a plane to stop in the air, and if we had time to plan this in advance, I would arrange for the plane to be tethered to a huge zeppelin flying just above it. Then it could stop in the air, and hang from the zeppelin.

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A practical way to answer the question by thinking about it:

If it were possible to stop aircraft in the air, then why do you suppose all of that

land and money would be spent building and paving mile-long runways ?

All aircraft require continual motion of some of their parts, to keep them aloft.