The Englishman arrived at Le Golf National as one of the form players on the European Tour, but with an indifferent record on the course that will host this year's Ryder Cup having never made the cut or even broken par in Paris.He put that right in some style with a closing bogey-free 66 that gave him a 12 under par total and a one-shot victory over American Peter Uihlein.
For Uihlein, there was the consolation of earning a spot at The Open Championship along with home favourite Mike Lorenzo-Vera and Swede Alexander Björk, who both finished in a share of third at eight under alongside Dane Thorbjørn Olesen.
"Today, it's a day that I'll never forget," said Fleetwood. "The way I felt coming down the stretch, the holes and the shots you have to hit.
"Winning, it's the best feeling by far in golf and to do it on this golf course in this event, a Rolex Series event, just massive, massive bonuses.
"It's just been a great week from start to finish. Coming off the back of good golf, US Open and BMW in Germany, felt like I've been swinging it well. So it's good to put it into practice and I've just kept up good form.
"With the start I had this year, it's very easy to look at the Race to Dubai and want to look towards the end of the year. Winning the Race to Dubai, it's going to be tough."