Airbus has confirmed that Interjet signed a purchase agreement for 40 Airbus A320neo aircraft.
The Mexican low-cost carrier says it will receive the aircraft from 2018 to 2023.
Airbus has not yet announced the location of the final assembly of the aircraft.
Interjet has not yet disclosed whether it will choose the Pratt & Whitney PW1100G or the CFM International Leap-1A engine options to power the aircraft. The airline has a total of 45 Airbus A320 family aircraft on backlog, including the new order. It operates 36 A320s today and will receive an additional aircraft later this month.
While the carrier does not have visibility yet on what its exact route structure will be like in 2018, it has said it plans to create a network that connects cities with mid-density traffic to larger hubs. Interjet chief executive Jose Luis Garza told Flightglobal in August that it plans to use the A320 family fleet to service higher-density routes and complement these frequencies with the 93-seat Sukhoi SSJ100, which will fly city pairs with mid-density traffic within Mexico or on transborder routes.
The carrier's first SSJ100 arrived in Italy in October for completion work ahead of delivery in March 2013.