CHENNAI: With the launch of Vande Bharat Express, the travel time between Chennai and Tirunelveli is set to come down to less than eight hours from the current 11 to 12 hours. Prime Minister Narendra Modi is scheduled to flag off the train on September 24, according to the tentative plan. The PM is also to inaugurate Chennai – Vijayawada (via Renigunta) and Thiruvananthapuram – Kasaragod Vande Bharat trains (via Alappuzha) on the same day.