Flight Reliability
F9 4406 · Frontier Airlines
Atlanta → Miami (ATL–MIA)
70
Usually Fine
WanderNerd Reliability Score
- 71%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 1.5%
- Cancelled
- 2 min early
- Median arrival delay
Based on 337 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
F9 4406 departing between 12–3 PM arrived on time 100% of the time, versus 63% between 9 AM–12 PM.
Saturdays have been rough.
F9 4406 arrived on time 81% of the time on Wednesdays and just 58% on Saturdays. That gap is worth planning around.
The breakdown
- Mon63%(51 flights)
- Tue79%(43 flights)
- Wed81%(36 flights)
- Thu74%(50 flights)
- Fri75%(51 flights)
- Sat58%(48 flights)
- Sun72%(53 flights)
- 6–9 AM75%(192 flights)
- 9 AM–12 PM63%(128 flights)
- 12–3 PM100%(12 flights)
61%
May
Jun 50% → May 61% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 50% | 24 |
| July 2025 | 52% | 25 |
| August 2025 | 72% | 29 |
| September 2025 | 91% | 23 |
| October 2025 | 93% | 27 |
| November 2025 | 75% | 28 |
| December 2025 | 70% | 30 |
| January 2026 | 74% | 31 |
| February 2026 | 68% | 28 |
| March 2026 | 68% | 31 |
| April 2026 | 80% | 25 |
| May 2026 | 61% | 31 |
- Departures on time
- 68%
- Diverted
- 0%
- Flights flown
- 332
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 337 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.