3000 nm ferry on A320, with some tech stuff onboard (=1000 kgs payload), 19.3t fuel on departure, flight time 7:25, actual fuel burn 15200 kgs. 4+t remaining on landing. so in theory you can do up to 8:30 flight time if enroute alternates allow.. this was pretty mature V2527 non-sharklet aircraft.
also depends which engine and how old the airframe is.