Denver-based Frontier Airlines has taken delivery of its first Airbus A320neo, becoming the first US carrier to receive the aircraft with CFM Leap-1A engines.

“We’re excited to receive our first A320neo,” says Frontier president and chief executive Barry Biffle. “The efficiency of the A320neo will help us lower costs even more and pass those savings along to our customers.”

Frontier, an all-A320 family operator, has orders for an additional 61 A320neos and 18 A319neos. It also holds an order backlog for two A320ceos and six A321ceos, says Airbus.

The ultra low-cost carrier operates 64 A320 family aircraft.

Spirit Airlines was the first US airline to take delivery of the A320neo earlier this month. Its A320neos are powered by Pratt & Whitney PW11100G engines.