Cool ! I have always wanted to visit Tiruchirapalli again !
There are direct trains but no direct flights for this journey. Mangalore (Karnataka) to Tiruchirapalli (Tamil Nadu) distance is 709 km and you can get there by flight + flight in just over 6 hours and 45 minutes or by train fares starting from ₹ 296.
Beautiful weather for sightseeing and other outdoor activity.