Flight Reliability
AA 3638 · American Airlines
Cincinnati → Miami (CVG–MIA)
91
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.6%
- Cancelled
- 5 min early
- Median arrival delay
Based on 340 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
AA 3638 arrived on time 92% of the time on Mondays. On Fridays: 79%.
A bit ahead of the CVG–MIA route.
AA 3638 arrived on time 86% of the time, versus 79% across the CVG–MIA route.
Better than the American Airlines network average.
AA 3638 arrived on time 86% of the time, versus 77% across the American Airlines network.
Trending in the right direction.
AA 3638 arrived on time 86% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon92%(48 flights)
- Tue84%(49 flights)
- Wed86%(49 flights)
- Thu89%(47 flights)
- Fri79%(48 flights)
- Sat85%(48 flights)
- Sun86%(49 flights)
94%
May
Jun 73% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 84% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 71% | 31 |
| January 2026 | 90% | 30 |
| February 2026 | 73% | 11 |
| March 2026 | 78% | 23 |
| April 2026 | 87% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 338
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 340 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.