Flight Reliability
F9 2423 · Frontier Airlines
San Antonio → Phoenix (SAT–PHX)
91
Nerd Approved
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0%
- Cancelled
- 8 min early
- Median arrival delay
Based on 65 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
F9 2423 departing between 3–6 PM arrived on time 89% of the time, versus 79% between 9 AM–12 PM.
Mondays have been rough.
F9 2423 arrived on time 86% of the time on Sundays and just 71% on Mondays. That gap is worth planning around.
Better than the Frontier Airlines network average.
F9 2423 arrived on time 83% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon71%(14 flights)
- Tue—(3 flights)
- Wed—(1 flights)
- Thu83%(12 flights)
- Fri85%(13 flights)
- Sat—(0 flights)
- Sun86%(22 flights)
- 9 AM–12 PM79%(34 flights)
- 12–3 PM—(5 flights)
- 3–6 PM89%(18 flights)
- 6–9 PM—(3 flights)
- 9 PM–12 AM—(5 flights)
91%
Jan
Oct 60% → Jan 91% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 60% | 10 |
| November 2025 | 75% | 12 |
| December 2025 | 82% | 11 |
| January 2026 | 91% | 11 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 65
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 65 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.