PARIS, June 16 (Reuters) - Saudi startup Riyadh Air

signed a deal at the Paris Airshow on Monday to buy 25 Airbus

A350-1000 jets, the planemaker said.

The deal, announced shortly after Saudi leasing company

AviLease placed an order for Airbus passenger and freighter

jets, also includes options for another 25 planes, Airbus said.

Airbus does not publish catalogue prices but the firm part

of the Riyadh Air deal is worth around $4.6 billion after

typical airline discounts, according to Cirium Ascend estimates.