Looking on the internet deeply has found these results:

they are leaving at is the most popular phrase on the web.

yhey are leaving by 10 results on the web	they are leaving at 1672 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Feb 3, 2015 ... It is not deemed to be acceptable for a teacher to announce to the head that they are leaving at half term, so nor should it be acceptable for a�... Jan 13, 2016 ... Thunderbolt. Ok we get it they are leaving at noon, yea. north?really? But really who boards a plane on the tarmac in this day and age? ... of the problems arise from over alcohol consumption during texting) goes over and the guests are still there and say they are leaving at noon. If you lose someone, probe why they are leaving. At this point, it is probably too late to try to salvage that person; however, by taking a little extra time to find out�...

yhey are leaving by

10 results on the web

they are leaving at

1672 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Feb 3, 2015 ... It is not deemed to be acceptable for a teacher to announce to the head that they are leaving at half term, so nor should it be acceptable for a�...
Jan 13, 2016 ... Thunderbolt. Ok we get it they are leaving at noon, yea. north?really? But really who boards a plane on the tarmac in this day and age?
... of the problems arise from over alcohol consumption during texting) goes over and the guests are still there and say they are leaving at noon.
If you lose someone, probe why they are leaving. At this point, it is probably too late to try to salvage that person; however, by taking a little extra time to find out�...