Route · DCA → STL · 2020–2025 BTS data
Washington to St. Louis
The DCA–STL corridor (Washington, DC → St. Louis, MO) runs ahead of the national average, served by 25 carriers across roughly 719 miles.
Data updated 2026-06-13
- 80.7%
- On-time
- +1.7 pts
- vs US avg
- 69 min
- Delay when late
- 12,058
- Flights
Cancelled
2.2%
Best Month
Oct 2024 88%
Worst Month
Jul 2025 63%
Distance
719 mi
Carriers
25
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 203 | 67 | 3 | 0 | YX,OH,WN |
| Nov 2025 | 209 | 53 | 4 | 0 | OH,WN,YX |
| Oct 2025 | 223 | 58 | 0 | 0 | AA,OH,WN,YX,MQ |
| Sep 2025 | 216 | 40 | 2 | 0 | MQ,OH,WN,YX,AA |
| Aug 2025 | 197 | 40 | 1 | 0 | AA,WN,OH |
| Jul 2025 | 200 | 74 | 12 | 0 | AA,OH,WN |
| Jun 2025 | 194 | 66 | 7 | 1 | AA,OH,WN |
| May 2025 | 207 | 51 | 7 | 0 | AA,OH,WN |
| Apr 2025 | 199 | 41 | 3 | 1 | OH,WN,AA |
| Mar 2025 | 175 | 46 | 7 | 1 | OH,WN |
| Feb 2025 | 156 | 56 | 5 | 0 | OH,WN,YX |
| Jan 2025 | 175 | 30 | 22 | 0 | OH,WN,YX |
| Dec 2024 | 177 | 31 | 0 | 0 | AA,OH,WN,YX |
| Nov 2024 | 192 | 32 | 0 | 0 | WN,YX,OH,AA |
| Oct 2024 | 200 | 24 | 0 | 0 | WN,AA,OH |
| Sep 2024 | 189 | 24 | 0 | 0 | WN,OH,AA |
| Aug 2024 | 195 | 51 | 2 | 0 | AA,WN,OH |
| Jul 2024 | 199 | 59 | 4 | 1 | AA,OH,WN |
| Jun 2024 | 189 | 32 | 0 | 0 | AA,OH,WN,YX |
| May 2024 | 196 | 60 | 2 | 1 | AA,OH,WN,YX |
| Apr 2024 | 186 | 28 | 0 | 0 | AA,OH,WN,YX |
| Mar 2024 | 187 | 26 | 0 | 0 | AA,OH,WN,YX |
| Feb 2024 | 185 | 24 | 0 | 0 | AA,OH,WN,YX |
| Jan 2024 | 201 | 39 | 20 | 0 | AA,MQ,WN,YX,OH |
Cancellation Rate
2.2%
101 of 4,650 flights
Diversion Rate
0.1%
5 of 4,650 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DCA - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →STL - St. Louis
Full on-time, delay-cause, and seasonal performance for St. Louis, MO.
Destination airport →Compare the two airports
See DCA 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 DCA–STL.
Routes with a similar on-time rate
What the Data Says About DCA to STL
12,058 tracked flights put the DCA to STL pairing (Washington to St. Louis) at a 80.7% on-time rate, squarely in line with the wider network. Delays that do occur run 68.6 minutes on average. Across the 719-mile route and its 25 carriers, the trailing 24 months show 2.2% cancelled and 0.1% diverted (4,650 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 88% on-time, while Jul 2025 came in at just 63% - a 25-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DCA to STL? ▼
What is the cancellation rate for DCA to STL? ▼
How far is the flight from DCA to STL? ▼
When is the best time to fly from DCA to STL? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.