More information is needed to give even a rough guess. And we can only guess - you should go directly to the sources.
The cost of flying can range from several hundred to several thousand - depending from where you are flying, on how you fly (in cabin, if your dog plus crate are under 8kg) to cargo (all other dogs) depending on size - and whether you fly the dog yourself or use a shipping agent.
I always fly using a professional shipper, and budget a couple of thousand. If you DIY, it will cost less.
Call your airline to get an exact quote.
As for the cost of rabies and the health certificate, these are done by your vet - so ask him directly.
There are many threads on this subject, do a bit of searching; some may be several years old but should give you a ballpark idea.
Good luck with your trip.
By the way, the documentation/process needed to bring your dog can be found here using this app from the BVet: http://bvet.bytix.com/plus/dbr/default.aspx?lang=en