How much does the Airbus A320 weigh?

The Airbus A320 isn't a single aircraft but a family that includes the A319, the A320 and the A321, plus the ceo (classic engine option) and neo (new engine option) versions. The A320ceo's operating empty weight is around 42.6 tonnes, while the A320neo, with larger engines and some additional structural reinforcement, rises to about 44.3 tonnes. That difference is mainly due to the CFM LEAP-1A or Pratt & Whitney PW1100G engines, heavier than the original CFM56 or V2500, and to the small wing reinforcements needed to handle the new loads.

The figure that matters most to airlines is the certified maximum takeoff weight (MTOW), because it determines how much fuel and payload the aircraft can carry. On the original A320ceo that limit started at 73.5 tonnes and reached 78 tonnes on the longer-range versions. The A320neo raises the ceiling to 79 tonnes in its longest-range configuration. Airbus certifies several MTOW combinations for the same airframe, so an airline can choose the lighter one for short flights or the heavier one to maximize range.

The difference between empty weight and MTOW, around 30-35 tonnes depending on the version, is what the aircraft distributes among fuel, passengers, baggage and cargo on each flight. The lower the takeoff weight, the lower the airport fees and fuel burn during the initial climb, something airlines adjust flight by flight depending on distance and expected load.