Flights Kansas City → St. Louis
MCI → STL
Route overview
The flight route from Kansas City to St. Louis has an on-time performance rate of 80%, with flights typically experiencing a mean delay of 8.6 minutes. Over the past year, this route has seen 244 total flights departing from Kansas City International Airport, which opened in 1956, connecting to Lambert-St. Louis International Airport, one of the busiest airports in the region with over thirteen million passengers annually.
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 Kansas City (MCI) → St. Louis (STL) route is operated by Southwest Airlines. Across 325 flights monitored in recent months, 80% arrived on time (within 15 min of schedule), with an average delay of 9 minutes. The cancellation rate is 2.46%. FlightGuard's average computed risk is 21.1/100 (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 Kansas City the average ATFM delay is 2.0 minutes.
Heading to St. Louis: what to expect in this direction
Flying from Kansas City (MCI) to St. Louis (STL) heads east for about 380 km, a flight time of roughly 54m.
Departures from Kansas City on this leg cluster in the morning window: about 43% of MCI-STL flights take off then.
Air-traffic congestion: departing Kansas City the average ATFM delay is 2.0 min (atfm); arriving into St. Louis it is 2.0 min (atfm).
Across 325 tracked MCI-STL flights, 80% left on time with an average delay of 9 min and a 2.5% 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 MCI-STL
Airports
Frequently asked questions about MCI-STL
On the Kansas City (MCI) -> St. Louis (STL) route, on-time performance is 80% with an average delay of 9 minutes, based on 325 tracked flights.
The cancellation rate on Kansas City-St. Louis is 2.46% across 325 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.
