The federal government is saying no to Ontario’s plans to allow jets at Billy Bishop airport on the downtown Toronto waterfront, delivering a major blow to Ontario Premier Doug Ford’s agenda.

Federal consultations on the jets concluded Friday and an overwhelming majority of people in Toronto said that they did not want the expansion to go forward, according to a senior federal government source.

The Globe and Mail is not naming the source as they were not authorized to speak publicly about the plans.

Respondents cited concerns about the environment, health and noise, the source said.

The decision is separate from the airport expansion already under way.

Just last year, Toronto agreed to allow the expansion of the airport’s runway buffer areas, as required by new Transport Canada rules.

Mr. Ford’s office did not immediately respond to a request for comment Friday.

The Ontario Premier has made the expansion of Billy Bishop one of the top priorities of his government. His government passed a law to take over the city of Toronto’s stake in a tripartite agreement, which also includes the federal government and the Toronto Port Authority, a federal agency.

Mr. Ford has previously said that Prime Minister Mark Carney is on board with his plan. The Prime Minister has said that it is an “interesting vision,” but did not formally endorse it, and last month said he has not formed an opinion on the proposal.