Ofcom last month opened the door to allow phone calls to be made and received during flights, but warned networks be crystal clear about call charges first.
The proposals were made July 28, and include a number of restrictions including being limited to planes registered in European Union member states and within their own airspace.
Other rules include, customers not being able to make calls on take off or landing, and only if the plane is flying at more than 3,000 feet.
Aircrafts will have radio transmissions installed, to provide the signal.
A spokesperson for Ofcom said: "Ofcom has given the go ahead, now it’s up to the airlines to decide if they want it, and for the operators to decide how it will be charged.
"I expect mobile will be used on flights during 2009."