Greg Hands, MP for Chelsea and Fulham, has said he is "disappointed Heathrow Airport is going ahead with a plan to build a third runway."
A "masterplan" published today proposes to the runway by 2026 and complete its expansion by 2050.
The plan includes diverting rivers, moving roads and rerouting the M25 through a tunnel under the new runway.
Heathrow's expansion has faced fierce opposition, but the airport says it has engaged with local communities and other stakeholders.
The proposals are now open to public consultation until 13 September.