What airlines accept minors to travel lone with one connecting flight

What airlines accept minors to travel lone with one connecting flight?
My 14 year old son wants to fly from Buffalo, NY to Durham, NC, I checked with US Air but they will not fly him because they do not have a direct flight is there an airline that will?
Air Travel - 2 Answers
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1 :
Southwest, AirTran, Continental, and United all allow passengers over the age of 12 to fly alone without purchasing the unaccompanied minor service, so these airlines are an option if you feel your son could handle a connection by himself. (If you wanted to purchase the unaccompanied minor service anyway, only United, AirTran, and Continental, of these four, would be an option -- they allow unaccompanied minors to connect, while Southwest, like US Airways, only allows nonstop or direct flights for unaccompanied minors.) Besides AirTran, Continental, and United, there are several airlines that allow unaccompanied minors to have connecting flights, including American, Delta, and Northwest.
2 :
Southwest. And you won't need Unaccompanied Minor since he is 14.