For now I don't think it's possible to transfer Bitcoin to other users without the use of Internet. And if you check other replies you'll see that the reasons have already been stated there. ( You need an internet connection to broadcast your transaction to the Blockchain).
Perhaps with the rate of development of technology nowadays and the constant development of Bitcoin, who knows maybe in the near future they might be able to figure out a way to send Bitcoin to other wallets without having to put your Bitcoin at risk i.e without losing your Bitcoin.