Flight Reliability
AA 4812 · American Airlines
SGU → Phoenix (SGU–PHX)
84
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0%
- Cancelled
- 5 min early
- Median arrival delay
Based on 213 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AA 4812 departing between 12–3 PM arrived on time 82% of the time, versus 67% between 9 AM–12 PM.
Sunday scaries are real for this one.
AA 4812 arrived on time 86% of the time on Saturdays and just 69% on Sundays. That gap is worth planning around.
A bit behind the SGU–PHX route.
AA 4812 arrived on time 78% of the time, versus 83% across the SGU–PHX route.
It basically never cancels.
Out of 213 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon82%(33 flights)
- Tue77%(30 flights)
- Wed79%(29 flights)
- Thu80%(30 flights)
- Fri77%(30 flights)
- Sat86%(29 flights)
- Sun69%(32 flights)
- 9 AM–12 PM67%(48 flights)
- 12–3 PM82%(159 flights)
- 3–6 PM—(6 flights)
71%
May
Nov 81% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 81% | 21 |
| December 2025 | 90% | 31 |
| January 2026 | 58% | 31 |
| February 2026 | 82% | 28 |
| March 2026 | 90% | 31 |
| April 2026 | 80% | 30 |
| May 2026 | 71% | 31 |
- Departures on time
- 82%
- Diverted
- 0%
- Flights flown
- 213
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 213 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.