The 12389 / 12390 Gaya–Chennai Central Weekly Superfast Express is a Superfast Express train of the Indian Railways connecting Gaya Junction in Bihar and Chennai Central of Tamil Nadu.

It is currently being operated with 12389/12390 train numbers on a weekly basis.

Henceforth it arrives and departs from Chennai Central instead of Chennai Egmore[1][2] The 12389/Gaya–Chennai Central Weekly Superfast Express has an average speed of 60 km/h and covers 2348 km in 39 hrs.

12390/Chennai Central–Gaya Weekly Superfast Express has an average speed of 62 km/h and covers 2348 km in 38 hrs 40 mins.

The train consists of 22 coaches: Both trains are hauled by a Gomoh Loco Shed-based WAP-7 locomotive from Gaya Junction to Chennai Central and vice versa.