Climate Watchdog Warns Heathrow Expansion Risks Net-Zero Targets

The Climate Change Committee warned that expanding London Heathrow Airport with a third runway is incompatible with the United Kingdom's legal net-zero emissions targets for 2050 under current policies. In advice requested by the government, the independent watchdog stated that expansion can only proceed if the aviation industry pays the full cost of decarbonization.

Such a shift could significantly increase ticket prices by 2050, with return flights to Alicante rising by as much as £150 and New York flights by £400. To prevent pricing out occasional travelers, the committee suggested implementing a frequent flyer tax. While Chancellor John Healey previously approved the £33 billion project, Prime Minister Andy Burnham and Mayor Sadiq Khan have expressed concerns regarding the environmental impact.

Airlines UK argues against passenger price hikes, advocating instead for carbon removals and affordable sustainable aviation fuel. The United Kingdom Department for Transport maintained that any expansion proposal must align with net-zero targets and noted ongoing investments in cleaner technologies.