There's a fair bit of conjecture and guesswork going on here. Firstly the deals done with the various airports are a 5 year deal for EXT/NWI, a ten year deal with CWL and the DSA deal is an undisclosed term. The CWL deal is a base deal and not an aircraft specific deal.
As for the E195 costings, nwoody2001, I don't know how you can say the E195 costs Flybe nothing, this simply is not true. There are routes that are being funded by PSO (NQY-LGW) but this is a route and not an airport specific deal. By way of airports offering subsidies like no landing or passenger fees etc will in no way even begin to cover the astronomical costs of leasing the E195. The ONLY reason Flybe have these aircraft and are flying them to mitigate astronomical losses on them is because there was no way in a million years they were going to be offloaded; nobody wants E195s and the delivery figures over 11 years proves it. The longest lease left on the newest of the 195s is about 3½ years, once this is up you could probably bet your right arm that they will be leaving the business.