The calls come from the House of Commons Environmental Audit Committee, which last week argued that airlines should be made to reveal their impact on the environment in their communications. The proposals form part of a report on reducing carbon emissions from transport.
The committee recommended that when advertising routes from the UK, airlines should state the carbon emissions per passenger alongside the fare. It also proposed that advertising, tickets and websites should carry a fuel-efficiency label, based on the average across the airline's entire fleet, enabling consumers to compare carriers.
British Airways insisted it is already taking sufficient action. 'BA is leading the way in promoting carbon-trading as the most efficient and environmentally effective way of curbing aircraft emissions,' said a spokesman.
Department for Transport (DfT) research shows that just one in eight air travellers associates flying with its impact on climate change. A DfT spokesman said it would 'respond fully to the report in due course'.