Flight Reliability
F9 4957 · Frontier Airlines
Phoenix → Santa Ana (PHX–SNA)
79
Usually Fine
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 4 min early
- Average arrival delay
- 2.6%
- Cancelled
- 13 min early
- Median arrival delay
Based on 76 historical flights. Data through May 2026.
What the data says
3–6 PM has a slight edge.
Departures between 3–6 PM arrived on time 91% of the time, against 85% between 12–3 PM.
Sunday scaries are real for this one.
F9 4957 arrived on time 100% of the time on Thursdays and just 69% on Sundays. That gap is worth planning around.
A bit ahead of the PHX–SNA route.
F9 4957 arrived on time 86% of the time, versus 81% across the PHX–SNA route.
Better than the Frontier Airlines network average.
F9 4957 arrived on time 86% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon83%(12 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu100%(13 flights)
- Fri82%(17 flights)
- Sat94%(17 flights)
- Sun69%(13 flights)
- 6–9 AM—(8 flights)
- 9 AM–12 PM—(7 flights)
- 12–3 PM85%(26 flights)
- 3–6 PM91%(22 flights)
- 6–9 PM90%(10 flights)
80%
Mar
Dec 88% → Mar 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| December 2025 | 88% | 17 |
| February 2026 | 85% | 13 |
| March 2026 | 80% | 10 |
- Departures on time
- 87%
- Diverted
- 1.3%
- Flights flown
- 73
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 76 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.