What's current reliability like? I'm looking to meet a group of friends in July in London, then fly them to Malaga and a few days later onward to Paris.

On the day in question, EasyJet offers multiple LGW-AGP and LTN-AGP. One particular LTN departure (in the middle of the day) is the optimum mix of price and schedule. Is there any significant risk of its being cancelled? The one later LTN flight would present the risk of our car rental or accommodation reception being after hours, and getting to LGW or LHR for another flight on possibly another airline would be a wrinkle.

How about AGP-CDG, afternoon departure? Should that be pretty reliable?

In general, a delay of an hour or two isn't a big concern, but not getting to the destination at all would be.