Flight Reliability
AA 4819 · American Airlines
Dallas–Fort Worth → SGU (DFW–SGU)
81
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 0.3%
- Cancelled
- 7 min early
- Median arrival delay
Based on 351 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AA 4819 arrived on time 83% of the time on Fridays. On Sundays: 71%.
It basically never cancels.
Out of 351 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon75%(51 flights)
- Tue76%(50 flights)
- Wed77%(51 flights)
- Thu76%(50 flights)
- Fri83%(52 flights)
- Sat74%(43 flights)
- Sun71%(52 flights)
- 6–9 AM75%(228 flights)
- 3–6 PM78%(121 flights)
69%
May
Jun 65% → May 69% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 65% | 26 |
| July 2025 | 77% | 31 |
| August 2025 | 87% | 30 |
| September 2025 | 79% | 29 |
| October 2025 | 77% | 31 |
| November 2025 | 76% | 29 |
| December 2025 | 84% | 31 |
| January 2026 | 63% | 30 |
| February 2026 | 71% | 28 |
| March 2026 | 84% | 31 |
| April 2026 | 74% | 27 |
| May 2026 | 69% | 26 |
- Departures on time
- 77%
- Diverted
- 0.3%
- Flights flown
- 349
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 351 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.