Route · STL → DCA · 2020–2025 BTS data
St. Louis to Washington
The STL–DCA corridor (St. Louis, MO → Washington, DC) runs ahead of the national average, served by 25 carriers across roughly 719 miles.
Data updated 2026-06-13
- 80.4%
- On-time
- +1.4 pts
- vs US avg
- 71 min
- Delay when late
- 12,061
- Flights
Cancelled
2.1%
Best Month
Sep 2024 93%
Worst Month
Feb 2025 60%
Distance
719 mi
Carriers
25
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 203 | 50 | 4 | 0 | YX,OH,WN |
| Nov 2025 | 208 | 53 | 6 | 1 | OH,WN,YX |
| Oct 2025 | 223 | 46 | 0 | 1 | AA,OH,WN,YX,MQ |
| Sep 2025 | 217 | 51 | 1 | 0 | MQ,OH,WN,YX,AA |
| Aug 2025 | 197 | 53 | 2 | 1 | AA,WN,OH |
| Jul 2025 | 200 | 76 | 14 | 3 | AA,OH,WN |
| Jun 2025 | 194 | 68 | 5 | 3 | AA,OH,WN |
| May 2025 | 207 | 52 | 4 | 4 | AA,OH,WN |
| Apr 2025 | 199 | 53 | 2 | 0 | OH,WN,AA |
| Mar 2025 | 175 | 50 | 7 | 3 | OH,WN |
| Feb 2025 | 157 | 63 | 9 | 0 | AA,OH,WN,YX |
| Jan 2025 | 175 | 31 | 20 | 1 | OH,WN,YX |
| Dec 2024 | 177 | 30 | 1 | 0 | AA,OH,WN,YX |
| Nov 2024 | 192 | 19 | 0 | 1 | WN,YX,OH,AA |
| Oct 2024 | 200 | 30 | 1 | 0 | WN,AA,OH |
| Sep 2024 | 189 | 14 | 0 | 0 | WN,OH,AA |
| Aug 2024 | 195 | 39 | 0 | 1 | AA,WN,OH |
| Jul 2024 | 199 | 51 | 5 | 1 | AA,OH,WN |
| Jun 2024 | 189 | 33 | 0 | 1 | AA,OH,WN,YX |
| May 2024 | 195 | 55 | 1 | 0 | AA,OH,WN,YX |
| Apr 2024 | 185 | 28 | 1 | 1 | AA,OH,WN,YX |
| Mar 2024 | 188 | 28 | 1 | 0 | AA,OH,WN,YX |
| Feb 2024 | 185 | 32 | 0 | 0 | AA,OH,WN,YX |
| Jan 2024 | 202 | 47 | 14 | 1 | AA,MQ,WN,YX,OH |
Cancellation Rate
2.1%
98 of 4,651 flights
Diversion Rate
0.5%
23 of 4,651 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 →DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Destination airport →Compare the two airports
See STL and DCA 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–DCA.
Routes with a similar on-time rate
What the Data Says About STL to DCA
12,061 tracked flights put the STL to DCA pairing (St. Louis to Washington) at a 80.4% on-time rate, squarely in line with the wider network. Delays that do occur run 70.5 minutes on average. Across the 719-mile route and its 25 carriers, the trailing 24 months show 2.1% cancelled and 0.5% diverted (4,651 flights sampled).
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 93% on-time, while Feb 2025 came in at just 60% - a 33-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.