Join Date: Apr 2009
Location: Bye Delta
Programs: AA EXP, UA Silver, HH Diamond, IHG Plat, Hyatt Plat, Marriott Titanium, Nat'l EE, Avis PC, Hertz PC
Posts: 16,635
Extra data consumption caused purely by the fact that you're connected to a VPN is not substantial. What you're actually trying to do over that connection will be far more relevant to your level of data consumption, but that consumption would be the same whether you're connected to VPN or not.