Please be aware that Paris has multiple airports and that these results are for all airports serving the city.
The best month to arrive at Paris is May and the most expensive month to fly is January. (Average prices, based on 619 datapoints.)
The best day to arrive at Paris is Tuesday and it would be best to avoid Saturday, as prices are on average 70.62% higher than on Tuesday. (Average prices, based on 525 datapoints.)
The cheapest airline flying to Paris is British Airways. They are 64% cheaper than Air France. (Average prices, based on 736 datapoints.)
At Paris the most flights depart around 15:00. (Hourly flights, based on 1199 datapoints.)
From Paris most of the flights depart to Nice, second best connected from Paris is Milan. (Daily flights, based on 175 datapoints.)