12840 — Howrah Chennai Mail
Chennai Central (MAS) → Howrah (HWH) · 26h 15m
Book today for journeys up to
Wed, 27 May, 2026
Advance booking window: 60 days from origin departure date
Train No.
12840
Duration
26h 15m
Runs on
Daily
Calculate Booking Date for 12840
Enter your journey date to find when IRCTC booking opens
Frequently Asked Questions — 12840 Howrah Chennai Mail
When does IRCTC booking open for 12840 Howrah Chennai Mail?+
IRCTC opens advance booking 60 days before the journey date. Today (Sat, 28 Mar, 2026) you can book Howrah Chennai Mail (12840) for journeys up to Wed, 27 May, 2026.
What is the Tatkal booking date for 12840?+
Tatkal booking for Howrah Chennai Mail opens 1 day before departure — at 10:00 AM for AC classes and 11:00 AM for Sleeper/2S class.
What is the route of 12840 Howrah Chennai Mail?+
Howrah Chennai Mail (Train No. 12840) runs from Chennai Central (MAS) to Howrah (HWH). Approximate journey duration is 26h 15m. It runs on: Daily.
How many days in advance can I book 12840?+
You can book Howrah Chennai Mail up to 60 days in advance from the train's origin departure date. Currently, IRCTC allows booking up to Wed, 27 May, 2026.