Taxi fares from Patna to Purnia starts at INR 7906. Minimum charges per km ranges between INR 12.75 and 15.5. No hidden charges and transparent pricing policy at Bookcab. Clear breakup of extras. Bookcab provides 40 different types of cars with best taxi fares. Our car fleet ranges from Tata Indica to Rolls Royce and their charges can be found here. Booking a cab from Patna to Purnia is now easy and cost-effetcive with BookCab's reliable online cab booking services. Estimated distance from Patna to Purnia is 301 km. The approximate travel duration is 5 hours 11 mins.