Gatwick is emerging as the preferred option for Londoners for expansion over rival Heathrow, according to the latest poll.
The West Sussex airport has come out top in six out of seven surveys organised by YouGov since October.
Londoners have been asked which airport they would prefer to be expanded for seven months in a row, with the results for April showing 45% supporting Gatwick against 34% in favour of Heathrow.
Londoners have said across all the polls that economic benefits and the negative impact on local residents – noise and pollution – are the two most important factors in the runway debate.
The cost to taxpayers was another concern across all seven polls.
Gatwick claims the consistent results demonstrate how the imminent decision must carefully balance economic benefits with the environmental impact a new runway would have.
The airport’s chief executive, Stewart Wingate, said: “We all want the economy to expand but today more than ever we have to balance growth with the impact it has on the environment.
“No longer can we bulldoze our way to growth and disregard the views of the nearly one million Londoners who would be impacted by noise if Heathrow expands.
“A new runway at Gatwick can deliver the economic benefits the country needs at a fraction of the environmental and financial cost of Heathrow.”
The Airports Commission is due to announce its preferred option for expanding airport capacity in the southeast soon after Thursday’s general election.