I don't believe United would pull out of OKC. United does pretty well here. The Denver flights have been hurt a bit, but last I heard LAX and IAD are doing as well as was expected. Maybe we might lose some mainliner service on the Denver routes, but I can't see them leaving.

US Airways is another story. They've never really caught on here. About the time America West started up here, the merger with US Airways took place. Since then, that airline has been in disarray. Southwest really hurts them here as well. SW basically killed off the Vegas route (along with Allegiant). Plus they're in direct competition on the Phoenix flights. In my opinion, US Airways would be better served here if they flew east rather than west. I think there is still room for growth to the east coast.

I think things are going alright in OKC, considering the problems with the commercial air industry. Continental's Cleveland flights are finally beginning to catch on here. Although they haven't added any flights, Northwest has slightly increased capacity here by rotating in some Embraer 175 and (currently) a DC-9.
Despite their financial troubles, Frontier is doing three mainliners a day. Not bad considering they've decided to pull the plug completely on Tulsa.

I agreee with Venture, that American may do some cutting back here. Either with flights or capacity.