Looking on the internet deeply has found these results:

when you will come is the most popular phrase on the web.

when you are coming 1174 results on the web	when you will come 14,190,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
When are you coming over tonight? Grandpa, when are you coming home? When you are coming on? So when are you coming home this weekend? When I told her you are coming over she was really happy. When are you coming back to New York? So when are you coming back? When are you coming? I'm going to be there tomorrow morning.	Proposals on this have already been put to you, Commissioner, and I would like to ask you this: when will you come up with a proposal for such an umbrella scheme? Start thinking about when you and the girls will come out here. One day, when I need you I will come. When will you come for me, Dad? And he goes on to say that when you return he will come back here as soon as possible. When will you come to see your mother again, João? When will you come to a place like this? All my wishes will come true during Christmas.

when you are coming

1174 results on the web

when you will come

14,190,000 results on the web

More popular!

Proposals on this have already been put to you, Commissioner, and I would like to ask you this: when will you come up with a proposal for such an umbrella scheme?
Start thinking about when you and the girls will come out here.
One day, when I need you I will come.
When will you come for me, Dad?
And he goes on to say that when you return he will come back here as soon as possible.
When will you come to see your mother again, João?
When will you come to a place like this?
All my wishes will come true during Christmas.