Indian carrier Jet Airways will launch twice weekly services on the Varanasi-Gaya-Bangkok route.
The new service will launch on 6 October, says Jet Airways. "These flights will allow people from the south Asian region to visit famed Buddhist pilgrimage sites," it says.
The Indian cities of Varanasi and Gaya have important Buddhist temples and Thailand is predominantly Buddhist.
Jet Airways operates 83 aircraft: ten Boeing 777-300ERs, 12 Airbus A330-200s, 47 737s and 14 ATR 72-500 aircraft, it adds.