+0
Please advise if there is any difference by saying:

The train leaves in 20 minutes. And:

The train will leave in 20 minutes.
Comments  
There is no difference. Both statements express the same thought. The present tense is frequently used with future meaning. There is nothing unusual about this.

CJ
What about "The train will be leaving in twenty minutes'? No difference, I think.
Site Hint: Check out our list of pronunciation videos.
Yes it means the same thing.
With the former, the speaker refers to a habitual fact, meaning every time the train leaves at that particular time according to the schedule, while with the latter, the speaker refers to the specific train they are talking about.
I can't see that distinction.
Teachers: We supply a list of EFL job vacancies
LcwangPlease advise if there is any difference by saying:

The train leaves in 20 minutes. And:

The train will leave in 20 minutes.

from what i've learned, i think that "the train leaves in 20 minutes" is more used. When we talk about trains, buses, planes ...etc we use present tense.
With the former, the speaker refers to a habitual fact
No, not in this case. With in 20 minutes the statement cannot be habitual, for then the train would always be leaving 20 minutes from now, and no one would ever be able to take that train!

The train leaves every day at 2 pm is a better illustration of the habitual aspect of leaves.

CJ