A bus firm has revealed two major changes to one of its busy Glasgow routes.

Scottish Citylink announced it has added a new fleet of vehicles and increased its frequency on its AIR service, which operates between Glasgow city centre and Edinburgh Airport.

The travel company said eight shiny new ‘state-of-the-art’ Irizar i6S Efficient coaches have gone into service on the route, representing a £2.5million investment.

READ MORE: Bus firm significantly improved one of its Glasgow routes

READ MORE: Bus firm unveiled major change to busy Glasgow route

The 53-seater buses are equipped with fold-down tables, reading lights, and USB chargers.

On top of the new vehicles, Scottish Citylink has also introduced a significant frequency update with services now operating up to every 20 minutes, compared to the previous 30-minute frequency.

(Image: Supplied) The route runs 24 hours a day between Edinburgh Airport and Glasgow City Centre (Buchanan Bus Station), with stops at Maxim Park, Harthill Services, Newbridge East, and Baillieston.

Citylink’s AIR service was launched in 2013. It is operated on behalf of Citylink by West Coast Motors.

Additionally, it is the only bus service between Glasgow and Edinburgh Airport.

Scottish Citylink Managing Director, Simone Walsh, said: “Our AIR route provides an important service for people arriving and leaving Edinburgh Airport who need reliable, affordable and comfortable transport to either help them start their trip, or get them home after their travels.

“We continually invest in our services and these high-quality new vehicles, and increased frequency, are great news for customers.

“We look forward to welcoming even more passengers on board over the summer and beyond.”

Edinburgh Airport is Scotland’s busiest airport, serving almost 16million passengers every year.

Gordon Dewar, Chief Executive of Edinburgh Airport, said: “Connectivity is integral in making Edinburgh Airport accessible to a wider reach of people, so we want to work with our partners to make it as easy as possible to get to and from Scotland’s busiest airport – especially between our two largest cities.

“This route from Edinburgh Airport into the centre of Glasgow is incredibly popular, so it’s great to see Citylink providing a more frequent service onboard their newly refreshed fleet.”

Colin Craig, managing director of West Coast Motors, added: “West Coast Motors is pleased to operate the AIR service on behalf of Citylink, connecting Glasgow and Edinburgh Airport.

“Our continuous investment in our fleet ensures a comfortable and hassle-free travel experience for customers, reflecting our commitment to providing excellent and reliable transport.”