[2] Final assembly of the aircraft takes place in Hamburg, Germany and Tianjin, China.

[3] The similarly shortened fuselage A319neo variant offers new, more efficient engines, combined with airframe improvements and the addition of winglets, named "sharklets" by Airbus.

The A319 was developed at the request of Steven Udvar-Hazy, the former president and CEO of ILFC according to The New York Times.

[5] The A319 design is a shortened fuselage, minimum change derivative of the A320 with its origins in the 130- to 140-seat SA1, part of the Single-Aisle studies.

[6] The shrink was achieved through the removal of four fuselage frames fore and three aft the wing, cutting the overall length by 3.73 metres (12 ft 3 in).

[9] Minor software changes were made to accommodate the different handling characteristics; otherwise the aircraft is largely unchanged.

[15] In January 1997, an A319 broke a record during a delivery flight by flying 3,588 nautical miles (6,645 km) on the great circle route to Winnipeg, Manitoba from Hamburg, in 9 hours 5 minutes.

[16] Range with eight passengers' payload and auxiliary fuel tanks (ACTs) is up to 6,000 nautical miles (11,100 km).

An ACJ serves as a presidential or official aircraft of Albania, Armenia, Azerbaijan, Bulgaria, Czech Republic, Germany, Hungary (Hungarian Air Force 604, 605),[citation needed] Italy,[19] Malaysia, Slovakia, Thailand, Turkey, Ukraine, and Venezuela.

In addition to the new engines, the modernisation programme also included such improvements as: aerodynamic refinements, large curved winglets (sharklets), weight savings, a new aircraft cabin with larger hand luggage spaces, and an improved air purification system.

These improvements in combination are predicted to result in 15% lower fuel consumption per aircraft, 8% lower operating costs, reduced noise production, and a reduction of nitrogen oxide (NOx) emissions by at least 10% compared to the A320 series, as well as an increase in range of approximately 500 nautical miles (900 km).

[27] The A319neo is the least popular variant of the Airbus A320neo family, with total orders for only 61 aircraft placed as of 30 September 2023, compared with 4,234 for the A320neo and 5,422 for the A321neo.

[30] This aircraft is designed for the German Air Force which uses it to perform surveillance missions as part of the Treaty on Open Skies.

A319AF is an unofficial designation of the A319ceo converted by and for Neptune Aviation, an aerial firefighting company based in the US state of Montana.

On 6 December 2024, Neptune announced they had signed a developmental contract with Aerotec & Concept, a French aerospace engineering company, to jointly design, modify, and eventually certify a fire retardant/water tank installation on an A319ceo.

[31] As of January 2025[update], 1,272 Airbus A319 aircraft (1,244 ceo+28 neo) were in service with 87 operators, with American Airlines, EasyJet, United Airlines and Delta Air Lines operating the largest A319 fleets of 133, 88, 83 and 57 aircraft respectively.