My guess from running a check on flightaware is the following:
AAL884 (web site) (all flights)
American Airlines Inc. "American"
Aircraft McDonnell Douglas MD
-82 (twin-jet) (MD82/L)
Origin Port Columbus Intl (KCMH)
Destination Reagan National (KDCA)
Other flights between these airports
AIR J34 BUCKO ELDEE1
Date Thursday, Sep 27, 2007
Duration 52 minutes
Status Arrived 18 minutes ago! (track log)
Departure 11:00AM EDT 11:31AM EDT
Arrival 11:52AM EDT 12:23PM EDT
Speed 453 kts
Altitude 29000 feet
Want a full history search for AAL884 dating back to June 2005? Buy now. Get it within one hour.
Date Type Origin Destination Departure Arrival Duration
27-Sep-2007 MD82/L Port Columbus Intl (KCMH) Reagan National (KDCA) 11:31AM EDT 12:23PM EDT 0:52
27-Sep-2007 MD82/L Lambert-St Louis Intl (KSTL) Port Columbus Intl (KCMH) 07:26AM CDT 09:15AM EDT 0:49
27-Sep-2007 MD82/L Lambert-St Louis Intl (KSTL) Reagan National (KDCA) 07:26AM CDT Diverted
Looks like it was STL
originally... not NY bound...