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American Airlines is set to expand its regional route network with the addition of twice daily Embraer E175 flights between Chicago and Chattanooga. The new service, launching on October 6, 2025, will place American Airlines in direct competition with United Airlines on this route.
The flights will be operated by Republic Airways under the American Eagle brand. Inbound flights from Chicago O'Hare (ORD) to Chattanooga (CHA) are scheduled for daytime and evening departures, while return flights from CHA to ORD will take off in the early morning and evening.
Starting October 6, American Eagle will conduct two daily flights between Chicago O’Hare International Airport and Chattanooga Metropolitan Airport. The first flight, AA4661, departs ORD at 1:54 PM and arrives in CHA at 4:30 PM. The second flight, AA4511, leaves at 7:05 PM and reaches its destination at 9:41 PM. Both flights are expected to last about one hour and thirty-six minutes.
