Possible to make a 9:20 am CDG flight off Tapestry II

We are taking a TA from Southampton the day after a Avalon Tapestry II Paris to Normandy river cruise.

Rather than go to London, and then travel to Southampton, I found a direct non-stop 1 hr 15 min flight from Paris Charles de Gaulle Airport to SOU Southampton on Flybe. They have flights at 9:20 am or 5:20 PM.

Since we are in Paris the day before, would we be able to get off at 6:00 ish?

Or, do they offer some additional excursions on the last day, and would it make sense to take the 5:20 flight?

I'm not familiar with Flybe, so I have to do some research there, before making a decision.

Have you checked with Avalon to see if tours are offered the last day? You could post your question about Flybe on the CC cruise air forum.