Virgin America will become the launch customer after committing to 30 of Airbus's re-engined A320neo (new engine option)," says Airbus, although it says no engine selection has been made.
Virgin America chief executive David Cush disclosed the agreement yesterday in Toulouse.
It covers 60 A320 aircraft in total, 30 of which are the A320neo.
In December 2010 Airbus launched the A320neo for entry into service in 2016.
Airlines will have a choice between the CFM International LEAP-X and Pratt & Whitney's PurePower PW1100G powerplants.
The A320neo will also incorporate "sharklet" wing-tips that help to save fuel, says the airframer.
"The A320neo will not only deliver significant fuel savings of up to 15%, which represents up to 3,600t of CO2 savings annually per A320neo. In addition, A320neo customers will benefit from a double-digit reduction in NOx emissions, reduced engine noise, lower operating costs and up to 500nm (950 km) more range or two tonnes more payload," adds the EADS subsidiary.