Irish air fares to Heathrow set to hike under plan to fund airport's upgrade 

Heathrow is the most popular destination from both Cork and Dublin Airport

Passengers in the arrivals hall at Heathrow. Heathrow Airport has unveiled a £10bn investment plan to expand capacity, aiming to handle an extra 10m passengers per year by 2031. Picture: Maja Smiejkowska/PA Wire

Irish passengers travelling through Heathrow will face higher air fares as part of plans to fund upgrades at London's premier airport.

Heathrow Airport has unveiled the £10bn (€11.5bn) investment plan to expand capacity, aiming to handle an extra 10m passengers per year by 2031. The plan forms the core of the airport's 2027-2031 business proposal, which was submitted to Britain's Civil Aviation Authority (CAA) on Friday.