RDU was also suppose to open 4 years ago.
Why TLH? There are other airports that AE would turn into a base long before TLH. American Eagle does not have any bases that are not a hub or focus city of American Airlines...TLH is neither.
RDU was also supposed to be a base in 2000-2001, supposedly it was imminent when 9/11 happened...and it's STILL not a base and it has WAY more service than TLH.
Later