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 Aer Lingus. They are 80% cheaper than Air France. (Average prices, based on 744 datapoints.)
At Paris the most flights depart around 18:00. (Hourly flights, based on 1235 datapoints.)
From Paris it is on average the cheapest to fly to Barcelona and to Zurich. (Average prices, based on 77 datapoints.)
From Paris most of the flights depart to Milan, second best connected from Paris is Nice. (Daily flights, based on 182 datapoints.)