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Heathrow Airport: Construction

Asked by Ben Obese-JectyConservativeDepartment for TransportTabled Answered 10 December 2025UIN 96482

The question

To ask the Secretary of State for Transport, what is the projected total cost of a third runway at Heathrow, including the consultation process; and who will be responsible for funding the planning and construction.

Answered by Keir Mather

The Government has been clear that any expansion at Heathrow must be affordable and firmly in the interests of passengers. The costs of the scheme, should be kept to a minimum and met through private funding, including any associated surface-transport requirements.

Whilst we have set out our ambition to move at pace, decisions on construction and operational costs are ultimately a matter for the scheme promoter. Scheme promoters are responsible for any consultation in relation to their DCO application in accordance with Planning Act 2008 requirements.

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