The All India Travel Agency has its office in IIT Chennai (Madras) Campus and here is its contact information:

Office in IIT(M) Campus
Walk in: 9:30AM-7PM, Mon-Sat

Address:
8, Student Facility Centre,
IIT(M) Campus,
Chennai - 600036. INDIA

Call us:
Internal: 9475
External:
+91 44 22570350
+91 44 22570360
+91 98840 81812

Email:
iitm@allindia.travel

Here I am giving important contact details of other offices of All India Travel Agency for your reference:

Chennai Corporate Office
Walk in: 9:30AM-7PM, Mon-Sat

Address:
B-6, Basement, Gemini Parsn Commercial Complex
Near US Consulate, Nungambakkam
Chennai - 600006. INDIA

Call us:
+91 44 43413456
+91 98840 81817

Email:
admin@allindia.travel,
bookings@allindia.travel

Office in Anna University Campus
Walk in : 9:30AM-7PM, Mon-Sat

Address:
Near International Hostel, CEG, Guindy
Chennai - 600025. INDIA

Call us:
Intercom: 9078
External:
+91 44 22300333
+91 44 22300444
+91 98411 12177

Email:
annauniv@allindia.travel

Madurai Office
Walk in: 9:30AM-7PM, Mon-Sat

Address:
Saradha Shopping Centre
40/1 Workshop Road
Madurai - 625001. INDIA

Call: +91 452 2623334
+91 452 4373747

Email:
allindiatravels@gmail.com

For Bookings, Domestic and International
Call:
+91 44 43413456

Email:
admin@allindia.travel
bookings@allindia.travel

For Passport, Visa and Insurance
Call:
+91 44 43413456

Email:
visa@allindia.travel