Flight Reliability
AA 4109 · American Airlines
Miami → Pensacola (MIA–PNS)
81
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.8%
- Cancelled
- 5 min early
- Median arrival delay
Based on 361 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AA 4109 arrived on time 90% of the time on Tuesdays and just 66% on Sundays. That gap is worth planning around.
A bit ahead of the American Airlines network.
AA 4109 arrived on time 81% of the time, versus 77% across the American Airlines network.
Slipping a little lately.
AA 4109 arrived on time 78% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon82%(51 flights)
- Tue90%(51 flights)
- Wed82%(49 flights)
- Thu80%(50 flights)
- Fri84%(51 flights)
- Sat81%(52 flights)
- Sun66%(50 flights)
84%
May
Jun 76% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 29 |
| July 2025 | 63% | 30 |
| August 2025 | 77% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 93% | 30 |
| November 2025 | 90% | 29 |
| December 2025 | 93% | 27 |
| January 2026 | 83% | 29 |
| February 2026 | 79% | 28 |
| March 2026 | 77% | 30 |
| April 2026 | 73% | 30 |
| May 2026 | 84% | 31 |
- Departures on time
- 81%
- Diverted
- 1.1%
- Flights flown
- 354
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 361 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.