Air passengers can offset CO2 at Treeflights

Passengers who want to offset the carbon dioxide emitted from their flights have the option of using a new carbon-offsetting website where they can pay to plant a tree.

Treeflights, whose motto is "You fly – we plant", will plant one tree in a Welsh forest for each flight taken, at a cost of £10 (or $19/€15).

Aviation fuel produces carbon dioxide (CO2) when it is burned, which is commonly believed to lead to global warming. However, planting a tree will go some way to redressing the balance, since trees absorb CO2 using the sun's energy.

Treeflights, which has been operating for two months, gives passengers the option of choosing whichever variety of tree they want from eight broad-leaved species – willow, ash, oak, wild cherry, beech, silver birch, alder or black poplar.

Trees are planted as saplings and the process is carried out "according to standard organic principles".

Passengers can even visit the forest where their tree is planted to get a first-hand view of where their £10 has gone. The website provides maps of, and directions to, the three planting sites in Wales – Pantglas, Ffos-y-ffin and Pant-y-pond Wood.

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For details of other sites you can use to offset carbon emissions, see Cheapflights' Travel Tip on Carbon emissions