Procurement minister Quentin Davies revealed that the operating cost per hour of a Eurofighter is £90,000, compared with the air defence version of the Tornado, the F3, at a "modest" £45,000.
Source
http://defenceoftherealm.********.co...our-money.html
I have no idea as to how accurate this statement is, or what it actually takes into account, but from all the information i can find, it seems to be about the average.