The chief executive of Aer Lingus owner IAG has said he feeling relaxed over Britain's upcoming exit from the European Union.  

"I'm personally very relaxed," Willie Walsh said at a meeting of industry association Airlines for Europe today.

Mr Walsh said he was confident that there will be a comprehensive "Open Skies" agreement between the UK and the US after Brexit. 

However, Ryanair boss Michael O'Leary said he expected flights to be disrupted in April 2019 as a result of Britain's exit from the European Union on March 29 of that year. 

"I think there will be a real crisis in April 2019. I believe there will be disruption to flights between the UK and Europe," Mr O'Leary told the Airlines For Europe conference.

Willie Walsh also said that IAG would consider buying more A380s from Airbus if the planemaker improves the pricing of the superjumbo.

"The pricing that Airbus has offered in the past is unacceptable to us," IAG boss Willie Walsh said on the sidelines of a conference hosted by industry body Airlines for Europe. 

"We've said very clearly to Airbus if they want to sell A380s they need to be aggressive on pricing and when they work out how to sell the aircraft, knock on our door and we'll talk to them," he said. 

As well as Aer Lingus, IAG owns British Airways and Iberia and the group operates 12 A380s. 

Willie Walsh said the airline was not currently negotiating with Airbus for more A380s. 

Mr Walsh also said that IAG was in the final stages of interviews to appoint a chief executive for the company's low cost long-haul airline, Level, which operates from Barcelona and was set up last year.