Flights St. Louis → Kansas City
STL → MCI
Route overview
The flight route from St. Louis to Kansas City has a 70% on-time performance rate, with an average delay of 14.8 minutes when flights are not on time. The destination airport in Kansas City, which opened in 1956, handles nearly nine million passengers annually, making it one of the busiest airports in the region.
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 St. Louis (STL) → Kansas City (MCI) route is operated by Southwest Airlines. Across 333 flights monitored in recent months, 69% arrived on time (within 15 min of schedule), with an average delay of 15 minutes. The cancellation rate is 2.70%. FlightGuard's average computed risk is 23.2/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Kansas City the average ATFM delay is 2.0 minutes (main cause: atfm). Departing from St. Louis the average ATFM delay is 2.0 minutes.
Heading to Kansas City: what to expect in this direction
Flying from St. Louis (STL) to Kansas City (MCI) heads west for about 380 km, a flight time of roughly 54m.
Departures from St. Louis on this leg cluster in the midday window: about 38% of STL-MCI flights take off then.
Air-traffic congestion: departing St. Louis the average ATFM delay is 2.0 min (atfm); arriving into Kansas City it is 2.0 min (atfm).
Across 333 tracked STL-MCI flights, 69% left on time with an average delay of 15 min and a 2.7% 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 STL-MCI
Airports
Frequently asked questions about STL-MCI
On the St. Louis (STL) -> Kansas City (MCI) route, on-time performance is 69% with an average delay of 15 minutes, based on 333 tracked flights.
The cancellation rate on St. Louis-Kansas City is 2.70% across 333 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 Kansas City, 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.
