Route · STL → MSY · 2020–2025 BTS data
St. Louis to New Orleans
The STL–MSY corridor (St. Louis, MO → New Orleans, LA) runs ahead of the national average, served by 1 carrier across roughly 604 miles.
Data updated 2026-06-13
- 82.4%
- On-time
- +3.4 pts
- vs US avg
- 59 min
- Delay when late
- 3,221
- Flights
Cancelled
1.1%
Best Month
Sep 2024 94%
Worst Month
Jul 2024 54%
Distance
604 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 61 | 9 | 0 | 0 | WN |
| Nov 2025 | 57 | 10 | 0 | 0 | WN |
| Oct 2025 | 82 | 17 | 0 | 0 | WN |
| Sep 2025 | 47 | 3 | 0 | 0 | WN |
| Aug 2025 | 48 | 4 | 0 | 0 | WN |
| Jul 2025 | 57 | 14 | 0 | 0 | WN |
| Jun 2025 | 57 | 19 | 0 | 0 | WN |
| May 2025 | 60 | 10 | 0 | 0 | WN |
| Apr 2025 | 61 | 12 | 0 | 0 | WN |
| Mar 2025 | 68 | 13 | 0 | 0 | WN |
| Feb 2025 | 72 | 14 | 0 | 0 | WN |
| Jan 2025 | 64 | 7 | 11 | 0 | WN |
| Dec 2024 | 61 | 5 | 0 | 0 | WN |
| Nov 2024 | 56 | 4 | 0 | 0 | WN |
| Oct 2024 | 72 | 7 | 0 | 0 | WN |
| Sep 2024 | 51 | 3 | 2 | 0 | WN |
| Aug 2024 | 53 | 9 | 0 | 0 | WN |
| Jul 2024 | 57 | 26 | 0 | 0 | WN |
| Jun 2024 | 56 | 8 | 0 | 0 | WN |
| May 2024 | 60 | 18 | 0 | 0 | WN |
| Apr 2024 | 61 | 11 | 2 | 0 | WN |
| Mar 2024 | 65 | 15 | 0 | 1 | WN |
| Feb 2024 | 54 | 4 | 0 | 0 | WN |
| Jan 2024 | 58 | 18 | 1 | 0 | WN |
Cancellation Rate
1.1%
16 of 1,438 flights
Diversion Rate
0.1%
1 of 1,438 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 →MSY - New Orleans
Full on-time, delay-cause, and seasonal performance for New Orleans, LA.
Destination airport →Compare the two airports
See STL and MSY 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–MSY.
Routes with a similar on-time rate
What the Data Says About STL to MSY
Bureau of Transportation Statistics records show St. Louis to New Orleans (STL to MSY) running a 82.4% on-time rate over 3,221 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 59.3 minutes. The 604-mile corridor is served by 1 carrier, and over the last 24 months 1.1% of 1,438 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 94% on-time, while Jul 2024 came in at just 54% - a 40-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.