Frequent flyers should face higher taxes to help tackle aviation emissions, the government’s climate advisers say.
The Committee on Climate Change says a “frequent flyer levy” would help curb the growing demand for air travel.
Other options would be to increase taxes on airlines, or restrict airport capacity – which would have implications for Heathrow expansion.
The government says it will study the recommendations.
Aviation is set to be the biggest source of UK emissions by 2050. And at the moment, ministers are planning for an increase of up to 49% in flying.
But the committee says anything more than 25% would be problematic.
It also warns that if the planned expansion of Heathrow airport goes ahead, it will leave very little growth room at other airports.
This is likely to prove controversial in the north of England, where many people already complain that infrastructure investment is swallowed by the South East.
The government has been hoping to solve problems of aviation emissions through new technology, including battery-powered short-haul planes and long-haul planes running on sustainable biofuels.
The committee says aviation emissions could be reduced by about 20% from today to 2050 through improvements to fuel efficiency.
But electric planes will only be suitable for small short-haul journeys for the foreseeable future, critics say.
What is more, the aviation industry has been struggling to develop adequate biofuels. And all plant-based material is likely to be contested by different industries as the century wears on.
In a letter to Transport Secretary Grant Shapps, the committee chairman, Lord Deben, writes that the industry is “highly unlikely” to be able to eliminate emissions by 2050 by technical means.
He warns that contrails – the trails of condensed water left by aircraft at high altitude – add to the warming impact of flying, even though currently their effects are poorly understood.
Lord Deben says the UK should continue pushing for strong international policies on aviation.
‘Out of step’
Currently the industry is hoping to counterbalance its emissions through the controversial practice of offsetting, in which firms agree to pay for, say, tree-planting in developing countries.
But many such schemes have been discredited.
Cait Hewitt, from the Aviation Environment Federation, said: “British people currently take more international flights than anyone else in the world, but there’s a growing public recognition that this feels out of step with the action we need on climate change.
“The government’s dodged the issue of aviation emissions for too long. It’s worth remembering that demand for aviation growth is being driven by a minority of frequent flyers – 70% of UK flights are made by just 15% of the population.”
Neil Robinson, from the industry group Sustainable Aviation, urged the government not to adopt stand-alone UK policies on aviation pollution.
He said: “By investing tens of billions of pounds in new, cleaner aircraft we have already decoupled growth in aviation from growth in emissions, and as a global industry we have a long-established plan to halve our emissions by 2050.
“Carbon reduction, however, is a global issue requiring a global response, with governments and industry working closely together for emissions to be managed within an international framework.”
A government spokesman said: “We are also committed to setting a clear ambition for the aviation sector and will carefully consider the advice of the Committee on Climate Change when we publish our position on aviation and climate change for consultation shortly.”
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