Pondicherry is roughly 300 km from Madurai, about a 6 hour drive — a popular weekend trip for the French Quarter, beach promenade and Auroville. A Madurai to Pondicherry Taxi booking with SR Cabs is available as a one-way drop or a round trip for a multi-day stay.
Since this is a longer route, most travellers stay 1–3 nights in Pondicherry before returning — let us know your dates and we'll quote the round trip or a one-way drop with a separate pickup for the return.
Sedans work well for 2–3 travellers; Innova Crysta is recommended for families or groups with more luggage over the longer drive.