When are you travelling?
In the winter months Condor's fast ferry services only operate on certain dates. Here's the schedule from now to February:
http://www.condorferr...%20Jersey%2005.10.pdf
As you'll see, it takes 4 hours from Weymouth or 4½ hours from Poole.
Which airlines have you checked for fares?
Aurigny Air fly from Stansted.
Blue Islands fly from Bristol, London City and Soutnampton, with services from Manchester commencing on 31st October, and from Bournemouth resuming from 1st November.
BmiBaby fly from East Midlands. (Also from Manchester but only until 29th of this month)
BA fly from Gatwick
If you're travelling in next year's summer period, CityJet wil be flying from Manston and Oxford.
easyJet's flights from Glasgow are also 'summer only' but they fly from Liverpool all year round. (Services from Southend start on 2nd May next year).
FlyBe operate to Jersey from Birmingham, Bristol, Cardiff, Edinburgh, Exeter, Gatwick, Luton, Manchester, Newcastle upon Tyne and Southampton. (In the summer they also fly from Doncaster and Southend)
Jet2 have summer services from Belfast-International, Blackpool and Leeds/Bradford.
Chris