Geneva to Chamonix bus

there are loads. Omio gives you many options but Swisstours, Blabla Car bus and Alply transfers are some (book direct with them, just use Omio to search). You can google map this as well. I arrive Monday and will be on one!

Thanks, where do they leave from-we arrive Fri morning.

i believe at the bus area at GVA, i'm sure there are either loads of signs, or workers in the terminal that will tell you; there is construction which is making it a little more difficult to find the actual area.

Flixbus also has buses, I believe.

The bus area at GVA is outside the arrivals area. When you come out of the secure
area, turn left, and walk down the main hallway till you get to the glass doors that lead
to the airport rail station. Go outside and you will be in the vicinity of the buses.