Route · STL → DSM · 2020–2025 BTS data
St. Louis to Des Moines
The STL–DSM corridor (St. Louis, MO → Des Moines, IA) runs ahead of the national average, served by 1 carrier across roughly 259 miles.
Data updated 2026-06-13
- 81.5%
- On-time
- +2.5 pts
- vs US avg
- 57 min
- Delay when late
- 3,689
- Flights
Cancelled
1.0%
Best Month
Nov 2024 95%
Worst Month
May 2024 62%
Distance
259 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 60 | 20 | 0 | 0 | WN |
| Nov 2025 | 56 | 9 | 2 | 0 | WN |
| Oct 2025 | 57 | 5 | 0 | 0 | WN |
| Sep 2025 | 56 | 6 | 0 | 1 | WN |
| Aug 2025 | 56 | 12 | 0 | 0 | WN |
| Jul 2025 | 57 | 16 | 0 | 0 | WN |
| Jun 2025 | 56 | 7 | 0 | 0 | WN |
| May 2025 | 56 | 11 | 1 | 0 | WN |
| Apr 2025 | 56 | 13 | 0 | 0 | WN |
| Mar 2025 | 57 | 9 | 2 | 0 | WN |
| Feb 2025 | 52 | 9 | 0 | 0 | WN |
| Jan 2025 | 59 | 7 | 2 | 0 | WN |
| Dec 2024 | 60 | 12 | 0 | 0 | WN |
| Nov 2024 | 56 | 3 | 0 | 0 | WN |
| Oct 2024 | 57 | 9 | 0 | 0 | WN |
| Sep 2024 | 55 | 7 | 0 | 0 | WN |
| Aug 2024 | 57 | 8 | 0 | 1 | WN |
| Jul 2024 | 58 | 17 | 0 | 0 | WN |
| Jun 2024 | 55 | 16 | 0 | 0 | WN |
| May 2024 | 58 | 22 | 0 | 1 | WN |
| Apr 2024 | 56 | 14 | 0 | 0 | WN |
| Mar 2024 | 57 | 13 | 0 | 0 | WN |
| Feb 2024 | 54 | 8 | 0 | 0 | WN |
| Jan 2024 | 58 | 16 | 6 | 0 | WN |
Cancellation Rate
1.0%
13 of 1,359 flights
Diversion Rate
0.2%
3 of 1,359 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Origin airport →DSM - Des Moines
Full on-time, delay-cause, and seasonal performance for Des Moines, IA.
Destination airport →Compare the two airports
See STL and DSM side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to STL–DSM.
Routes with a similar on-time rate
What the Data Says About STL to DSM
3,689 tracked flights put the STL to DSM pairing (St. Louis to Des Moines) at a 81.5% on-time rate, squarely in line with the wider network. Delays that do occur run 56.8 minutes on average. Across the 259-mile route and its 1 carrier, the trailing 24 months show 1.0% cancelled and 0.2% diverted (1,359 flights sampled).
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 95% on-time, while May 2024 came in at just 62% - a 33-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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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.