That was because there were regularly horrendous traffic jams caused by vehicles coming into the airport and those leaving the parkings, drop offs and the hire cars pickups due to the crazy road configuration around the airport. When leaving you had to circle round and you ended up joining the jam of cars coming into the airport.
Once we picked up a car and then spent 45 mins just to get onto the motorway.
Yah, now it’s the shuttle bus that gets stuck in traffic. They haven’t solved the problem as rental cars are only a small part of the problem. They just wanted to move them to free up land for their expensive multistory car park and short term parking. (£5 for 30 minutes; £55 for 24 hrs). Drop off fee is now £5 for 10 minutes. .
skyscanner.ch is your friend when trying to research flight possibilities.
It pretty much covers all airlines and all routes. May not be accurate as to whether or not the flight is actually available (as in, has seat left) but it does show you all the potential options. Including ones which are separate flights (not bookable as a through journey).
Sadly, Exeter is a bitch to get to anyway and since the 2nd demise of FlyBe doesn't have the services it once had. I was going to suggest Swiss ZRH to MAN then the flight to Exeter - but there aren't any MAN - EXT flights any more.
I would also suggest Heathrow, many more flights (and probably cheaper) and it's only 3 hours drive. Or National Express have direct coaches that take 3:40. The other airport option is Bourenmouth or Southampton, but not sure if there any direct flights from CH