Route · RDU → STL · 2020–2025 BTS data
Raleigh/Durham to St. Louis
The RDU–STL corridor (Raleigh/Durham, NC → St. Louis, MO) runs ahead of the national average, served by 1 carrier across roughly 667 miles.
Data updated 2026-06-13
- 84.4%
- On-time
- +5.4 pts
- vs US avg
- 58 min
- Delay when late
- 2,356
- Flights
Cancelled
0.4%
Best Month
Sep 2025 94%
Worst Month
May 2024 72%
Distance
667 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 60 | 8 | 0 | 0 | WN |
| Nov 2025 | 58 | 8 | 0 | 0 | WN |
| Oct 2025 | 58 | 5 | 0 | 0 | WN |
| Sep 2025 | 52 | 3 | 0 | 0 | WN |
| Aug 2025 | 53 | 8 | 0 | 0 | WN |
| Jul 2025 | 58 | 13 | 1 | 0 | WN |
| Jun 2025 | 56 | 8 | 0 | 0 | WN |
| May 2025 | 56 | 7 | 0 | 1 | WN |
| Apr 2025 | 57 | 10 | 0 | 0 | WN |
| Mar 2025 | 58 | 10 | 1 | 1 | WN |
| Feb 2025 | 36 | 4 | 0 | 0 | WN |
| Jan 2025 | 37 | 6 | 3 | 0 | WN |
| Dec 2024 | 60 | 9 | 0 | 0 | WN |
| Nov 2024 | 56 | 5 | 0 | 0 | WN |
| Oct 2024 | 58 | 8 | 0 | 0 | WN |
| Sep 2024 | 55 | 4 | 0 | 0 | WN |
| Aug 2024 | 59 | 10 | 0 | 0 | WN |
| Jul 2024 | 62 | 13 | 0 | 3 | WN |
| Jun 2024 | 59 | 14 | 0 | 0 | WN |
| May 2024 | 58 | 16 | 0 | 0 | WN |
| Apr 2024 | 55 | 11 | 0 | 0 | WN |
| Mar 2024 | 48 | 6 | 0 | 0 | WN |
| Jan 2024 | 32 | 6 | 0 | 0 | WN |
| Dec 2023 | 39 | 5 | 0 | 0 | WN |
Cancellation Rate
0.4%
5 of 1,280 flights
Diversion Rate
0.4%
5 of 1,280 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
RDU - Raleigh/Durham
Full on-time, delay-cause, and seasonal performance for Raleigh/Durham, NC.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See RDU 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 RDU–STL.
Routes with a similar on-time rate
What the Data Says About RDU to STL
Bureau of Transportation Statistics records show Raleigh/Durham to St. Louis (RDU to STL) running a 84.4% on-time rate over 2,356 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 57.7 minutes. The 667-mile corridor is served by 1 carrier, and over the last 24 months 0.4% of 1,280 flights were cancelled, 0.4% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 94% on-time, while May 2024 came in at just 72% - a 22-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.