Thе planе іs taking off іn half an hou...
Thе planе іs taking off іn half an hour.
&
Thе planе іs to fly іn half an hour.

What is the difference?

Question

Thе planе іs taking off іn half an hou...
Thе planе іs taking off іn half an hour.
&
Thе planе іs to fly іn half an hour.

What is the difference?

Answer

There is technically no difference and nothing wrong with either, but the first phrase is generally used.

Answer

The first is more common. In fact, you will very seldom hear the second. More common would be: The plane departs in half an hour.