British Airways passengers are to get Amazon-style app booking where flights can be secured in just a few clicks in an overhaul of the company’s decades-old website.

The company’s app and website are to be relaunched as part of a £7bn revamp under BA’s chief executive Sean Doyle as he scrambles to modernise the flag carrier.

Changes will also include new planes, revamped seats and refurbished airport lounges.

The replacement website is already being trialled by people wishing to fly from London Gatwick to three Italian cities – Bari, Cagliari and Catania – plus Montpellier in France and Antalya, Turkey.

Feedback has been positive, giving BA confidence to go ahead with a full rollout, Mr Doyle told The Telegraph at the International Air Transport Association airline summit in Dubai.

He said: “We’ve done upgrades before, but this one is very different. It’s embracing technology in a way we haven’t done since the dot.com boom and looking ahead at future proofing the business.

“The website’s been around for 22 years. We were leaders in it many years ago and we’d improved it down through the years. But we’ve been falling behind and we need to catch up and leapfrog the rest. So we’ve scrapped the old one and built a new one from the start.

Mr Doyle said the upgrade will seek to take an “omni-channel” approach, with people getting the same familiar experience via the new app, on BA.com, or when viewing the website on their mobile phone.