The twice-weekly, year-round flights will be operated by Tianjin Airlines.
After stopping in Chongqing they will continue to the port city of Tianjin in the north-east of China.
Guy Stephenson, Gatwick's chief commercial officer, said: "By flying into two of China's most important economic centres, Gatwick is providing vital direct connections for UK business people into some of the most exciting growth markets on the planet.
"Tourists from both the UK and China will also benefit, as will non-exporting businesses located in the UK as Chinese visitors are some of the highest spenders."
Speaking on the opportunities for exporters, Lewis Scott, UKTI South East regional director, said: “The ability to meet overseas partners and customers face-to-face is critical to maintain and grow successful relationships and markets.
"Diversifying markets and profit sources, or extending product lifecycles, by entering emerging or new markets, can be critical to companies."
The service will begin on June 25.