SEOUL: European aircraft maker Airbus said on Wednesday it had formally signed deals with South Korea’s two largest airlines for the delivery of 55 of its fuel-efficient, single-aisle A321neo passenger jets. The contracts, negotiated earlier in the year, were signed on Tuesday to coincide with the visit to Seoul by French President Francois Hollande. South Korea’s largest carrier, Korean Air, signed up for 30 Airbus A321neo planes, worth around $3.7 billion (3.4 billion euros) at list prices. It also took options on 20 more of the aircraft. The second biggest carrier Asiana contracted for the delivery of 25 A321neos, with a catalogue price of around $3.1 billion.