The Singapore-based budget carrier had last month announced the launch of its flight services to Chennai and Amritsar from Singapore from May 24.
The flights to Jaipur, however, will commence from October 2, it had said.
"Jaipur and Amritsar may be 80 per cent transit (passengers). We have advantage of flying out of Amritsar and Jaipur as we can connect to the entire network of Singapore Airlines. Passengers from Jaipur can fly to Singapore on Scoot and from there they can fly on Singapore Airlines' network to the destined airport on the same ticket," Scoot India Chief Bharath Mahadevan said.
A large part of Scoot's flight services are to Australia and China.
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Mahadevan said the airline is eyeing around 70-80 per cent seat factor on its flights from the three Indian cities.
Launched in 2012, Scoot has deployed an all-787 Dreamliner fleet to operate in India.
While Chennai and Jaipur will have 335-seater Boeing B787-800 aircraft, services to Amritsar will be operated with a 375-seater Boeing 787-900 aircraft.
From the all three cities, Scoot's combined seat factor should be as much as 70 per cent, Mahedvan said, adding, "in some cities, it may be even as high as 80 per cent.