Looking on the internet deeply has found these results:

I am leaving for chennai tomorrow is the most popular phrase on the web.

I leave for chennai tomorrow 13 results on the web	I am leaving for chennai tomorrow 181 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
By the next moon, I leave for war. Unfortunately, I must. I leave for Moscow tomorrow. I leave for england in an hour. I leave for New York tomorrow. All alone, commander, until I leave for Honolulu. She's only here for two days Before heading to chennai tomorrow. I leave for the Belgian Congo within weeks. I leave for Africa again in a few days.	But I am leaving for New York in a couple days. You will be happy to know that I am leaving for London. And more than understand, I respect your decision, but I am leaving for six months. I am leaving for the United States tomorrow. As you know, I am leaving for China in a few hours. Unfortunately I am leaving for Prague early tomorrow. Okay, we can banter if we want to banter, But I'm warning you I am leaving for lunch early. I am leaving for my daughter's graduation

I leave for chennai tomorrow

13 results on the web

I am leaving for chennai tomorrow

181 results on the web

More popular!

But I am leaving for New York in a couple days.
You will be happy to know that I am leaving for London.
And more than understand, I respect your decision, but I am leaving for six months.
I am leaving for the United States tomorrow.
As you know, I am leaving for China in a few hours.
Unfortunately I am leaving for Prague early tomorrow.
Okay, we can banter if we want to banter, But I'm warning you I am leaving for lunch early.
I am leaving for my daughter's graduation