Route · MSY → STL · 2020–2025 BTS data
New Orleans to St. Louis
The MSY–STL corridor (New Orleans, LA → St. Louis, MO) runs ahead of the national average, served by 1 carrier across roughly 604 miles.
Data updated 2026-06-13
- 82.7%
- On-time
- +3.7 pts
- vs US avg
- 60 min
- Delay when late
- 3,239
- Flights
Cancelled
1.2%
Best Month
Apr 2024 93%
Worst Month
Jun 2025 74%
Distance
604 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 60 | 6 | 0 | 0 | WN |
| Nov 2025 | 58 | 10 | 0 | 0 | WN |
| Oct 2025 | 82 | 14 | 0 | 0 | WN |
| Sep 2025 | 47 | 5 | 0 | 0 | WN |
| Aug 2025 | 48 | 9 | 1 | 0 | WN |
| Jul 2025 | 57 | 13 | 0 | 0 | WN |
| Jun 2025 | 57 | 15 | 0 | 0 | WN |
| May 2025 | 60 | 11 | 1 | 0 | WN |
| Apr 2025 | 61 | 9 | 0 | 0 | WN |
| Mar 2025 | 68 | 8 | 1 | 0 | WN |
| Feb 2025 | 72 | 14 | 2 | 0 | WN |
| Jan 2025 | 62 | 5 | 8 | 1 | WN |
| Dec 2024 | 61 | 9 | 0 | 0 | WN |
| Nov 2024 | 56 | 6 | 0 | 0 | WN |
| Oct 2024 | 72 | 14 | 0 | 0 | WN |
| Sep 2024 | 51 | 7 | 1 | 0 | WN |
| Aug 2024 | 52 | 5 | 0 | 0 | WN |
| Jul 2024 | 57 | 13 | 0 | 0 | WN |
| Jun 2024 | 56 | 10 | 0 | 0 | WN |
| May 2024 | 60 | 13 | 0 | 0 | WN |
| Apr 2024 | 61 | 4 | 1 | 0 | WN |
| Mar 2024 | 66 | 12 | 0 | 0 | WN |
| Feb 2024 | 58 | 11 | 0 | 0 | WN |
| Jan 2024 | 61 | 16 | 2 | 0 | WN |
Cancellation Rate
1.2%
17 of 1,443 flights
Diversion Rate
0.1%
1 of 1,443 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MSY - New Orleans
Full on-time, delay-cause, and seasonal performance for New Orleans, LA.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See MSY 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 MSY–STL.
Routes with a similar on-time rate
What the Data Says About MSY to STL
Bureau of Transportation Statistics records show New Orleans to St. Louis (MSY to STL) running a 82.7% on-time rate over 3,239 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 59.8 minutes. The 604-mile corridor is served by 1 carrier, and over the last 24 months 1.2% of 1,443 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Apr 2024 posted the strongest performance at 93% on-time, while Jun 2025 came in at just 74% - a 20-point swing worth factoring into travel timing.
Frequently Asked Questions
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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.