Walsh's comments come as Dubai's Emirates is exploring switching A380 orders to smaller aircraft in a move that raises doubts about the future of the superjumbo, people familiar with the matter said on Thursday.

"I've been very clear with Airbus that if they want to sell the aircraft, they're going to have to be very aggressive on the price," Walsh said at a Oneworld event in London.

Airbus is trying to broker a deal for Emirates, the largest customer, to switch some A380 that are already on order to the smaller A350 in a move likely to trigger a shutdown in production of the slow-selling superjumbo, sources said on Thursday.

That would be part of a broader package to end an impasse between Emirates and Rolls Royce over terms for engine support and could involve salvaging as many sales as possible to a handful of airlines still interested in buying the plane.

Industry sources say Airbus is in talks with IAG-owned British Airways on the A380. Rolls Royce provides engines for both the A350 and A380.

Analysts say Airbus would rather sell A350 which is generating cash than A380 which is draining cash.

Industry sources said Airbus and Emirates were also discussing switching orders to the mid-sized A330neo, giving a boost to another programme that has suffered slow sales.

Industry publication The Air Current reported Emirates is leaning in that direction, muddying the waters for Boeing as it tries to finalise a deal to sell competing 787-10s to Emirates.

Walsh said that IAG was in talks with Airbus and Boeing to get more wide-body aircraft to replace 747s that are due to be retired in the coming years.

"Those discussions are ongoing... and we're pleased to have the choice of excellent aircraft," Walsh said.

IAG's British Airways currently operates 12 A380s. Walsh said he was committed to the A380s which the group already operates, and that IAG might consider some additional aircraft if the price was right.

"I've no concerns about the A380... it's been an excellent aircraft for us. We have made it clear to Airbus that we might consider some additional aircraft," Walsh said.

"But the pricing of that aircraft has not been as attractive as we believe it needs to be."

(Reporting by Alistair Smout, additional reporting by Tim Hepher in Paris,; Editing by Paul Sandle and Louise Heavens)

By Alistair Smout