Airbus delivered 63 A320-family aircraft over the course of July, with the re-engined variants accounting for 44 of them.
The airframer handed over 30 A320neos and 14 A321neos during the month.
Pratt & Whitney PW1100G engines were installed on 24 of these aircraft while the rival CFM International Leap-1A was fitted to the other 20.
Airbus has revealed the figures in its latest backlog figures, covering the first seven months of this year.
It shows that the 44 A320neo-family deliveries were complemented by deliveries of 10 A320s, eight A321s and a single A319.
Airbus’s overall single-aisle family deliveries reached 65 aircraft during July, because the A320-family figures were supplemented by a pair of A220s.