From India you can contact the Air India Mumbai Office using the telephone number 022 22796231. If calling from outside Inida you will need to dial +91 22 22796231. If you find that this telephone number is not working you can try 022-22796666.
The above telephone numbers for the Air India office in Mumbai can be used to get information about an upcoming flight or to change a details about your flight, including the date of travel. For example you can use the Mumbai customer service number 022 22796231 to re-schedule a flight. You can also use one of the Air India phone lines to make a reservation for a seat on an upcoming flight.