Route · ATY → DEN · 2020–2025 BTS data
Watertown to Denver
The ATY–DEN corridor (Watertown, SD → Denver, CO) runs ahead of the national average, served by 1 carrier across roughly 519 miles.
Data updated 2026-06-13
- 83.7%
- On-time
- +4.7 pts
- vs US avg
- 128 min
- Delay when late
- 763
- Flights
Cancelled
1.9%
Best Month
N/A
Worst Month
N/A
Distance
519 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 30 | 8 | 0 | 0 | OO |
| Nov 2025 | 30 | 4 | 0 | 0 | OO |
| Oct 2025 | 31 | 5 | 0 | 0 | OO |
| Sep 2025 | 30 | 10 | 0 | 0 | OO |
| Aug 2025 | 31 | 16 | 0 | 0 | OO |
| Nov 2021 | 30 | 2 | 0 | 0 | OO |
| Sep 2021 | 30 | 6 | 0 | 0 | OO |
| Aug 2021 | 31 | 7 | 0 | 0 | OO |
| Jul 2021 | 31 | 11 | 1 | 0 | OO |
| Jun 2021 | 30 | 10 | 0 | 2 | OO |
| May 2021 | 31 | 9 | 0 | 0 | OO |
| Apr 2021 | 30 | 3 | 2 | 1 | OO |
| Mar 2021 | 31 | 4 | 5 | 0 | OO |
| Jan 2021 | 31 | 3 | 1 | 0 | OO |
| Dec 2020 | 31 | 5 | 1 | 0 | OO |
| Nov 2020 | 30 | 1 | 0 | 0 | OO |
| Oct 2020 | 31 | 4 | 1 | 0 | OO |
| Sep 2020 | 30 | 1 | 0 | 0 | OO |
| Aug 2020 | 31 | 2 | 0 | 1 | OO |
| Jul 2020 | 31 | 3 | 0 | 0 | OO |
| Jun 2020 | 30 | 2 | 0 | 0 | OO |
| May 2020 | 30 | 1 | 0 | 0 | OO |
| Apr 2020 | 30 | 2 | 1 | 1 | OO |
| Mar 2020 | 31 | 3 | 2 | 0 | OO |
Cancellation Rate
1.9%
14 of 732 flights
Diversion Rate
0.7%
5 of 732 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
ATY - Watertown
Full on-time, delay-cause, and seasonal performance for Watertown, SD.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See ATY and DEN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to ATY–DEN.
Routes with a similar on-time rate
What the Data Says About ATY to DEN
Bureau of Transportation Statistics records show Watertown to Denver (ATY to DEN) running a 83.7% on-time rate over 763 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 128.3 minutes. The 519-mile corridor is served by 1 carrier, and over the last 24 months 1.9% of 732 flights were cancelled, 0.7% diverted.
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from ATY to DEN? ▼
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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.