Mathers Wales UK is correct that Flybe did a direct Belfast City to CDG a could of years ago. It was in direct competition with Easyjet from Belfast International and did not last that long
Yes Flybe launched a daily nonstop 195 service on BHD CDG but at the same time Aer Lingus also launched a daily rotation from BFS and over night Belfast Paris market went from 1 daily to 3 daily flights, none of the 3 got great loads.. understandably!