Route · DEN → ATY · 2020–2025 BTS data
Denver to Watertown
The DEN–ATY corridor (Denver, CO → Watertown, SD) runs ahead of the national average, served by 1 carrier across roughly 519 miles.
Data updated 2026-06-13
- 88.5%
- On-time
- +9.5 pts
- vs US avg
- 77 min
- Delay when late
- 763
- Flights
Cancelled
1.4%
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 | 5 | 0 | 0 | OO |
| Nov 2025 | 30 | 1 | 0 | 0 | OO |
| Oct 2025 | 31 | 3 | 0 | 0 | OO |
| Sep 2025 | 30 | 6 | 0 | 0 | OO |
| Aug 2025 | 31 | 10 | 0 | 0 | OO |
| Nov 2021 | 30 | 2 | 0 | 0 | OO |
| Sep 2021 | 30 | 2 | 0 | 0 | OO |
| Aug 2021 | 31 | 5 | 0 | 0 | OO |
| Jul 2021 | 31 | 5 | 1 | 0 | OO |
| Jun 2021 | 30 | 7 | 0 | 0 | OO |
| May 2021 | 31 | 4 | 0 | 0 | OO |
| Apr 2021 | 30 | 4 | 0 | 0 | OO |
| Mar 2021 | 31 | 4 | 3 | 0 | OO |
| Jan 2021 | 31 | 3 | 0 | 0 | OO |
| Dec 2020 | 31 | 2 | 2 | 1 | OO |
| Nov 2020 | 30 | 2 | 0 | 0 | OO |
| Oct 2020 | 31 | 4 | 0 | 0 | OO |
| Sep 2020 | 30 | 4 | 0 | 0 | OO |
| Aug 2020 | 31 | 2 | 0 | 0 | OO |
| Jul 2020 | 30 | 6 | 0 | 0 | OO |
| Jun 2020 | 30 | 2 | 0 | 0 | OO |
| May 2020 | 31 | 0 | 0 | 0 | OO |
| Apr 2020 | 30 | 1 | 1 | 1 | OO |
| Mar 2020 | 31 | 3 | 3 | 0 | OO |
Cancellation Rate
1.4%
10 of 732 flights
Diversion Rate
0.3%
2 of 732 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Origin airport →ATY - Watertown
Full on-time, delay-cause, and seasonal performance for Watertown, SD.
Destination airport →Compare the two airports
See DEN and ATY side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to DEN–ATY.
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What the Data Says About DEN to ATY
Denver to Watertown (DEN to ATY) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.5% on-time rate across 763 flights, with delays that do happen averaging 76.9 minutes. The corridor runs roughly 519 miles and is served by 1 carrier. Over the most recent 24 months, 10 of 732 flights were cancelled (1.4%) and 2 diverted (0.3%).
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 DEN to ATY? ▼
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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.