Just looked at fares. Air Corsica is £49.00 one way on the 1st July.
This seemingly has the bag, seat and snacks services included. As mentioned by Daz.
EasyJet however is £85.00 with seats and a bag.
Also Air Corsica have better flight times leaving STN at 09.30 where EasyJet is in the morning rush at 06:00.
If I was booking to Corsica I k ow who I’d be flying with.