American Airlines flights from Chicago to Saint Louis
Find deals on Chicago to Saint Louis flights
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Chicago (ORD)to
Saint Louis (STL)
06/23/26 - 06/24/26
Round trip
Economy
from
$137Fare subject to changes
Updated: 21 hours ago
Chicago (ORD)to
Saint Louis (STL)
06/04/26 - 06/10/26
Round trip
Economy
from
$164Fare subject to changes
Updated: 19 hours ago
Chicago (ORD)to
Saint Louis (STL)
05/23/26 - 05/26/26
Round trip
Economy
from
$164Fare subject to changes
Updated: 17 hours ago
Chicago (ORD)to
Saint Louis (STL)
06/23/26 - 06/25/26
Round trip
Economy
from
$237Fare subject to changes
Updated: 21 hours ago
Chicago (ORD)to
Saint Louis (STL)
10/17/26 - 10/24/26
Round trip
Economy
from
$337Fare subject to changes
Updated: 19 hours ago
Chicago (ORD)to
Saint Louis (STL)
05/15/26 - 05/17/26
Round trip
Economy
from
$399Fare subject to changes
Updated: 22 hours ago
Chicago (ORD)to
Saint Louis (STL)
05/14/26 - 05/17/26
Round trip
Economy
from
$399Fare subject to changes
Updated: 22 hours ago
Chicago (ORD)to
Saint Louis (STL)
05/12/26 - 05/13/26
Round trip
Economy
from
$439Fare subject to changes
Updated: 21 hours ago
*Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.
