Flights Chicago → St. Louis
ORD → STL
Route overview
The flight route from Chicago to St. Louis operates with a mix of aircraft including the McDonnell Douglas MD-83, Boeing 737-800, Canadair Regional Jet 700, and Embraer RJ145, serving one of the busiest airports in terms of annual passenger traffic at 13,665,517. With a 70% on-time performance rate, flights experience an average delay of 25.6 minutes.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Chicago (ORD) → St. Louis (STL) route is operated by American Airlines, United Airlines. Across 1665 flights monitored in recent months, 71% arrived on time (within 15 min of schedule), with an average delay of 25 minutes. The cancellation rate is 5.53%. FlightGuard's average computed risk is 25.4/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At St. Louis the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from Chicago the average ATFM delay is 2.0 minutes.
Heading to St. Louis: what to expect in this direction
Flying from Chicago (ORD) to St. Louis (STL) heads south-west for about 415 km, a flight time of roughly 56m.
Departures from Chicago on this leg cluster in the midday window: about 37% of ORD-STL flights take off then.
Air-traffic congestion: departing Chicago the average ATFM delay is 2.0 min (atfm); arriving into St. Louis it is 2.0 min (atfm).
Across 1,665 tracked ORD-STL flights, 71% left on time with an average delay of 25 min and a 5.5% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 74% | 10 min | 6.9% |
| American Airlines (AA) | 74% | 16 min | 3.0% |
Airlines operating ORD-STL
Airports
Frequently asked questions about ORD-STL
On the Chicago (ORD) -> St. Louis (STL) route, on-time performance is 71% with an average delay of 25 minutes, based on 1665 tracked flights.
The cancellation rate on Chicago-St. Louis is 5.53% across 1665 monitored flights.
The route is operated by 2 airlines: American Airlines, United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at St. Louis, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
