Flights Chicago → St. Louis
MDW → STL
Route overview
The flight route from Chicago to St. Louis operates with a Boeing 737-800 aircraft and has an on-time performance rate of 75%, with an average delay of 12.7 minutes per flight. Over the course of a year, this destination airport serves approximately 13.67 million passengers, indicating high traffic volume.
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 (MDW) → St. Louis (STL) route is operated by Southwest Airlines. Across 543 flights monitored in recent months, 76% arrived on time (within 15 min of schedule), with an average delay of 11 minutes. The cancellation rate is 3.87%. FlightGuard's average computed risk is 19.6/100 (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 (MDW) to St. Louis (STL) heads south-west for about 404 km, a flight time of roughly 56m.
Departures from Chicago on this leg cluster in the overnight window: about 35% of MDW-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 543 tracked MDW-STL flights, 76% left on time with an average delay of 11 min and a 3.9% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Southwest Airlines (WN) | 73% | 6 min | 3.1% |
Airlines operating MDW-STL
Airports
Frequently asked questions about MDW-STL
On the Chicago (MDW) -> St. Louis (STL) route, on-time performance is 76% with an average delay of 11 minutes, based on 543 tracked flights.
The cancellation rate on Chicago-St. Louis is 3.87% across 543 monitored flights.
The route is operated by 1 airline: Southwest 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.
