Dubai's Emirates Airline announced it has boosted its fleet of Airbus A380s to 44 planes, taking delivery of another two of the superjumbos which went straight into service on Saturday.

"Emirates has received delivery of its 43rd and 44th A380 aircraft with a double delivery from Airbus' Finkenwerder facility in Hamburg, Germany," the company said in a statement.

"From an operator standpoint, the A380 is still one of the most fuel-efficient aircraft per seat," said the airline's president, Tim Clark.

The fast-growing airline announced during the Dubai Air Show last month that it has ordered 50 Airbus A380s for $23 billion.

The order cemented its status as the single largest operator of the double-deckers.