Airport Reliability
ATY · Watertown
Watertown, SD (ATY)
- 87%
- Departures within 15 minutes
- 14 min
- Average departure delay
- 86%
- Arrivals within 15 minutes
- 1.2%
- Departures cancelled
Based on 605 departures and 606 arrivals. Data through May 2026.
What the data says
Morning flights do better here.
Departures from ATY departing between 6–9 AM arrived on time 96% of the time, versus 76% between 6–9 PM.
Friday is doing you no favors.
Departures from ATY arrived on time 91% of the time on Tuesdays. On Fridays: 80%.
Trending in the right direction.
Departures from ATY arrived on time 89% of the time over the last three months in the data, compared with 81% in the three months before that.
When ATY gets messy
- 3–6 AM90%(214 flights)
- 6–9 AM96%(83 flights)
- 9 AM–12 PM—(1 flights)
- 6–9 PM76%(299 flights)
- 9 PM–12 AM—(1 flights)
- Mon88%(85 flights)
- Tue91%(86 flights)
- Wed80%(86 flights)
- Thu81%(84 flights)
- Fri80%(84 flights)
- Sat83%(87 flights)
- Sun86%(86 flights)
87%
May
Aug 72% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 72% | 61 |
| September 2025 | 85% | 60 |
| October 2025 | 87% | 62 |
| November 2025 | 87% | 60 |
| December 2025 | 83% | 60 |
| January 2026 | 82% | 60 |
| February 2026 | 77% | 56 |
| March 2026 | 91% | 57 |
| April 2026 | 90% | 60 |
| May 2026 | 87% | 62 |
Airlines departing ATY
Busiest routes from ATY
Based on 605 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.