Route · MCI → STL · 2020–2025 BTS data
Kansas City to St. Louis
The MCI–STL corridor (Kansas City, MO → St. Louis, MO) runs ahead of the national average, served by 1 carrier across roughly 237 miles.
Data updated 2026-06-13
- 88.1%
- On-time
- +9.1 pts
- vs US avg
- 55 min
- Delay when late
- 5,319
- Flights
Cancelled
1.0%
Best Month
Oct 2024 99%
Worst Month
Jan 2024 77%
Distance
237 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 85 | 9 | 1 | 0 | WN |
| Nov 2025 | 81 | 10 | 0 | 0 | WN |
| Oct 2025 | 88 | 12 | 0 | 0 | WN |
| Sep 2025 | 90 | 8 | 0 | 0 | WN |
| Aug 2025 | 92 | 13 | 0 | 0 | WN |
| Jul 2025 | 92 | 16 | 0 | 0 | WN |
| Jun 2025 | 90 | 17 | 1 | 0 | WN |
| May 2025 | 88 | 13 | 1 | 1 | WN |
| Apr 2025 | 86 | 15 | 0 | 0 | WN |
| Mar 2025 | 85 | 9 | 0 | 0 | WN |
| Feb 2025 | 63 | 6 | 1 | 0 | WN |
| Jan 2025 | 72 | 5 | 5 | 0 | WN |
| Dec 2024 | 89 | 9 | 0 | 0 | WN |
| Nov 2024 | 83 | 8 | 0 | 0 | WN |
| Oct 2024 | 88 | 1 | 1 | 0 | WN |
| Sep 2024 | 85 | 4 | 0 | 0 | WN |
| Aug 2024 | 91 | 10 | 1 | 0 | WN |
| Jul 2024 | 103 | 20 | 0 | 0 | WN |
| Jun 2024 | 100 | 12 | 0 | 0 | WN |
| May 2024 | 88 | 19 | 2 | 0 | WN |
| Apr 2024 | 86 | 16 | 0 | 0 | WN |
| Mar 2024 | 86 | 17 | 0 | 0 | WN |
| Feb 2024 | 75 | 7 | 0 | 0 | WN |
| Jan 2024 | 81 | 19 | 7 | 0 | WN |
Cancellation Rate
1.0%
20 of 2,067 flights
Diversion Rate
0.0%
1 of 2,067 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MCI - Kansas City
Full on-time, delay-cause, and seasonal performance for Kansas City, MO.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See MCI and STL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MCI–STL.
Routes with a similar on-time rate
What the Data Says About MCI to STL
Kansas City to St. Louis (MCI to STL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.1% on-time rate across 5,319 flights, with delays that do happen averaging 55.0 minutes. The corridor runs roughly 237 miles and is served by 1 carrier. Over the most recent 24 months, 20 of 2,067 flights were cancelled (1.0%) and 1 diverted (0.0%).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 99% on-time, while Jan 2024 came in at just 77% - a 22-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from MCI to STL? ▼
What is the cancellation rate for MCI to STL? ▼
How far is the flight from MCI to STL? ▼
When is the best time to fly from MCI to STL? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.