Carlisle City Council has called a meeting of its development control committee to consider plans for a £35 million airport redevelopment.
Owner Andrew Tinkler wants to build a new runway, passenger terminal, air traffic control centre, hangars, warehousing and offices.
The planning application has generated so much interest that the council is planning to hold another meeting to give supporters and objectors enough time to speak.
The council is waiting for comments from the Civil Aviation Authority and it has asked Mr Tinkler's company, Stobart Air, for clarification on points raised by Natural England and English Heritage.
The meeting will be postponed if responses do not arrive in time.
Even if councillors back the airport scheme on the 15th, formal planning consent may be delayed for a month.
The Government Office North West has up to 28 days to "call in" the application for a public inquiry.
Mr Tinkler is keen to get a quick decision and Haulage group Eddie Stobart wants to move its HQ to the airport because the lease on its premises at Kingstown expires next year.