The Patna to Supaul bus route covers approximately 260 kms and takes about 7 hrs 6 mins. A total of 5 direct buses operated by 5 bus operators run on this route. The first bus departs at 20:00, and the last bus leaves at 21:25.
Major boarding points in Patna include Bairiya Bustand, Gandhi Maidan, Zero Mile, while common drop locations in Supaul are Simrahi Bazar Nh 57, Supaul Bus Stand.
RTC and private operators such as Tiwari Motors, Aman Rath, Sree Balaji Travels offer Volvo, AC, and non-AC seater and sleeper buses. Ticket prices on redBus range from INR 396 - INR 1499.00 depending on the bus type and features.



