Flight Reliability
F9 4124 · Frontier Airlines
Austin → Miami (AUS–MIA)
74
Usually Fine
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 2.0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 51 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 4124 departing between 6–9 PM arrived on time 86% of the time, versus 71% between 9 AM–12 PM.
Thursdays have been rough.
F9 4124 arrived on time 78% of the time on Sundays and just 61% on Thursdays. That gap is worth planning around.
A bit behind the AUS–MIA route.
F9 4124 arrived on time 74% of the time, versus 79% across the AUS–MIA route.
The breakdown
- Mon—(6 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu61%(18 flights)
- Fri—(2 flights)
- Sat—(0 flights)
- Sun78%(23 flights)
- 6–9 AM—(1 flights)
- 9 AM–12 PM71%(31 flights)
- 3–6 PM—(4 flights)
- 6–9 PM86%(14 flights)
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 50
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 51 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.