Air France Hop and easyJet, the two operators of the route, only fly jets. In the Hop case, post-pandemic they'll be operating ERJs and E-Jets; in the easyJet c

Air France Hop and easyJet, the two operators of the route, only fly jets. In the Hop case, post-pandemic they'll be operating ERJs and E-Jets; in the easyJet case, they'll be operating A320 family aircraft. Note that Hop did have various ATR 42/72s until 2019/20, when they got rid of their (fairly recent) ATR 72-600s. It is perhaps surprising that they now are jet-only, but at least pre-pandemic the plan was for them to long-term be operating only CRJ1000 and E-190s, both of which are notably larger than the largest turboprops on the market. I don't know what their average sector length is, but it's certainly not implausible that the fuel efficiency per passenger isn't that much worse (and easyJet's A320s almost certainly beat any turboprop on a per passenger basis given their average loadings).