United States-based ultra-low-cost carrier Frontier Airlines retired their last Airbus A319 aircraft on September 9, 2021.

The 15-year-old aircraft, registered as N949FR, made the final flight from Nashville International Airport (BNA) to Denver International Airport (DEN).

Frontier operated 52 Airbus A319s over the last 15 years, with its first induction of the aircraft type in May 2001.

"The retirement of Frontier's last Airbus A319 aircraft is a proud and symbolic moment for our team as we look ahead towards a greener future," said Daniel Shurz, senior vice president of commercial, Frontier Airlines. 

Frontier Airline's A319 phase-out initiative is part of a fleet modernization plan to replace the old aircraft with the new Airbus A320neo and the A321neo.  

"Our ultra-modern fleet is already the most fuel-efficient in the U.S. skies and, as we continue the transition to A320neo (New Engine Option) and A321neo aircraft, our fuel savings and operational efficiencies continue to evolve," Shurz added.

Frontier currently operates a fleet of 108 aircraft, including 87 Airbus A320s, 21 A321s. The airline has 147 more planes on order.

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