Air India already operates four frequencies to London - three from Delhi and one from Mumbai.
The daily flight will be a boon to the 1.5 million-strong Indian diaspora living in Britain, catering to the strong demand of more than six lakh Indians from Gujarat, Air India said in a statement.
"From December 15, there will be direct flights between London and Ahmedabad," Modi had said in his address to 60,000 wildly cheering British Indians at the iconic Wembley Stadium in London yesterday.
According to the airline, flight AI-131 will take off from Ahmedabad at 0430 hours to arrive Mumbai at 0545 hours from where it will take off at 0705 hours and land at London at 1130 hours.
On the return leg, flight AI-130 will leave London at 1330 hours, arrive at Mumbai at 0400 hours next day from where it will take off at 0530 hours and land at Ahmedabad at 0645 hours, Air India said.