The survey showed that Macron would beat Le Pen in the run-off voting with 61 percent against 39 percent.
The first round of the French presidential elections is scheduled for April 23, while the run-off is scheduled for May 7.
According to the Ifop survey for the iTele television channel and the Paris Match news magazine, carried out between February 20-23 among 1,395 adults, Macron would receive 22.5 percent of the votes in the first round of the elections, while Fillon would get 20.5 percent. Le Pen was projected to come first with 26.5 percent of the votes.
The chances of Macron have started to increase after Francois Bayrou, a French centrist politician and the leader of the Democratic Movement party (MoDem), declared earlier this week that he would propose an alliance to Macron instead of running for presidency himself.