While flights to property in Florida are long-haul journeys, passengers can draw some comfort from the fact that their per-mile carbon footprint is likely to be lower in real terms than for many other destinations.
The total carbon output of an aircraft can be divided by the number of people it carries, in order to work out the footprint of each individual over each mile of the journey.
But if an aeroplane flies with empty seats, each person's effective carbon emissions increase in real terms.
Figures from the International Air Transport Association now show North America to be the greenest in terms of this criterion, with the average flight 84.1 per cent full.
Over the past year, flights to property in Florida have become even more eco-friendly as the number of seats available increased by 7.2 per cent, but the number of passengers rose by 11.1 per cent.
The Air Transport Action Group's enviro.aero website claims efficiency has increased by 20 per cent in aviation in the past decade, with a further 25 per cent expected by 2020.
