Concerns have been raised that passengers at Birmingham International Airport would face delays if plans to expand the nearby Coventry hub were given the go-ahead.
Lawyers acting for BIA yesterday told a planning inquiry that if increased demand for air travel in the Midlands was met by an enlarged Coventry hub the result would be to "spread" delays across both airports.
John Steele, QC, representing BIA, was responding to evidence from Leonard Rayment, director of operations at Farnborough Airport.
Mr Rayment, whose Hampshire-based hub has witnessed a massive increase in chartered business passengers in recent years, said: "Coventry Airport is well placed to take advantage of the business opportunities that exist.
"It has an adequate runway and adequate space to provide facilities that passengers need."
However, Mr Steele said air passengers would face increased delays if Coventry was permitted to expand. He also said if officials behind Coventry Airport - which is now called West Midlands International Airport - were to move into the chartered business market, congestion would increase.
Mr Rayment agreed that the airport would face increased pressures from business passengers with regard to immigration facilities and access to the runway, but insisted both Birmingham and Coventry could take advantage of new markets.
But Mr Steele said: "If I was to put to you that if Birmingham gets congested and therefore ceases to meet the traffic demand, that demand would go to Coventry.
"But that would cause more delays in Coventry.
"So the whole effect of this would be to simply spread the delay around."
Mr Steele also questioned the validity of Mr Rayment's evidence, adding: "Is it not right that you are not really in a position to say anything except in a most generalised sense?"