Four Airbus A321neos are due to be ordered by IAG for its Spanish spin-off Iberia Express. The aircraft are due to begin operations with the carrier next April.
Iberia Express already operates four conventional A321s as part of its fleet which also includes 18 A320s.
The re-engined aircraft will be configured with 232 seats, in a mix of business- and economy-class cabins.
The conversion means that Iberia has a total order of seven A321neos as well as A320neos – two of which have already been delivered.