|Service type||Inter-city Express|
|Locale||West Bengal, Odisha, Andhra Pradesh & Tamil Nadu|
|First service||1 July 2000|
|Current operator(s)||Southern Railway zone|
|Distance travelled||2,431 km (1,511 mi)|
|Average journey time||43 hours, 30 minutes|
|Line used||Howrah-Chennai main line (HWH – KOK)
Diamond Junction of Chennai (KOK – WST)
Guntakal–Chennai Egmore section (WST – MS)
Chennai Egmore–Thanjavur line (MS – VM)
Chord line (VM – TPJ)
|Class(es)||2A, 3A, SL, SLR, HCPV and UR/GS|
|Seating arrangements||Corridor coach (UR/GS only)|
|Sleeping arrangements||Couchette car|
|Observation facilities||Windows in all carriages|
|Baggage facilities||Overhead racks
HWH–VSKP: (WAM 4 (VSKP) or WAP 4 (SRC/TATA));
VSKP–MDU: (WAM 4/WAP 1 (AJJ) or WAP 1 (RPM));
MDU–CAPE: WDM 3A (ED)
One AC 2-tier (2A)
Two AC 3-tier (3A)
Eleven II SL
One Pantry car
|Track gauge||1,676 mm (5 ft 6 in)|
|Electrification||25 kV AC, 50 Hz|
|Operating speed||56 kilometres per hour (35 mph)|
|Track owner(s)||Southern Railway zone|
This express train was, numbered 6355/6356, introduced during the 1999–2000 Railway Budget as a new weekly train extending the Tiruchirappalli – Howrah Superfast Express, thereby truncating the service of the latter from tri–weekly to bi–weekly. The train connecting Howrah/Kolkata in West Bengal and Kanyakumari in Tamil Nadu made its inaugural run on 1 July 2000. This train was converted to Superfast category and re-numbered to 2665/2666 from 1 December 2006 onwards. Later, the train number was changed to 12665/12666 from December 2010 onwards as a part of train management system over the entire Indian Railways network.
The train has 22 coaches comprising One A/C 2-Tier, Two A/C 3-tier, Eleven Sleeper class, Four General compartments (Unreserved), Two Sleeper-cum-Luggage rake (SLR), One High-Capacity Parcel Van (HCPV) and one pantry car.[a]
The train numbered 12665 leaves Howrah at 16:10 hours every Mondays and arrives Kanyakumari at 11:40 hours on Wednesdays. On the return journey, the train leaves Kanyakumari at 07:50 hours every Saturdays and arrives Howrah at 03:20 hours on Mondays.[b] Some of the prominent stoppages includes Kharagpur, Bhubaneswar, Visakhapatnam,Rajahmundry, Eluru,Vijayawada, Ongole, Chennai Egmore, Viluppuram Junction, Tiruchirappalli Junction, Madurai Junction, Tirunelveli Junction and Nagercoil Junction.
- Tiruchirappalli – Howrah Superfast Express
- Cholan Express
- Pallavan Express
- Vaigai express
- Tiruchirappalli – Tirunelveli Intercity Express
- The coach composition is subject to change.
- The timings are in Indian Standard Time.
- "Trains at a Glance July 2013 - June 2014". Indian Railways. Archived from the original on 21 December 2013. Retrieved 25 February 2014.
- "Over a dozen new trains to begin". Press Information Bureau. Retrieved 25 February 2014.
- "Kanyakumari, Howrah express flagged off". The Hindu. 2 July 2000. Retrieved 25 February 2014.
- "Tiruchi-Howrah Express made superfast". The Hindu. Chennai. 30 November 2006. Retrieved 25 February 2014.
- "19 express trains speeded up". The Hindu. Thiruvananthapuram. 2 December 2006. Retrieved 25 February 2014.
- "Railways to Switch to 'Five' – Digit System for Numbering all its Passenger Carrying Trains from December 2010". Press Information Bureau. 23 September 2010. Retrieved 25 February 2014.
- "Railways migrate to 5-digit number scheme to monitor trains". The Times of India. 20 December 2010. Retrieved 25 February 2014.
- "Train Time Table for HWH-CAPE (Via. HWH-MAS main line)" (PDF). Indian Railways. p. 2. Archived from the original (PDF) on 17 July 2013. Retrieved 25 February 2014.
- "Train Time Table for HWH-CAPE (Via. Chord Line)" (PDF). Indian Railways. p. 2. Retrieved 25 February 2014.
- "Train Time Table for CAPE-HWH (Via. Chord Line)" (PDF). Indian Railways. p. 1. Retrieved 25 February 2014.
- "Train Time Table for CAPE-HWH (Via.HWH-MAS main line)" (PDF). Indian Railways. p. 2. Archived from the original (PDF) on 18 August 2014. Retrieved 25 February 2014.