Kansas City, Mo. ? The Kansas City Chamber of Commerce is backing a controversial proposal to consolidate the city’s airport into one terminal.

The chamber voted Thursday to support a $1.2 billion proposal for Kansas City International Airport, joining other city officials who support replacing the three current terminals with a single terminal.

Critics say the current configuration makes KCI one of the most convenient airports for travelers in the country, offering easy access to terminals and parking.

But supporters say a single terminal would improve efficiency, passenger safety and convenience. And they say one terminal would allow the airport to grow in the future.

The Kansas City Star reports (http://bit.ly/YdZgck ) if the proposal proceeds, construction could start in late 2014 and be finished by late 2016.