Flight Reliability
F9 4455 · Frontier Airlines
Philadelphia → Fort Lauderdale (PHL–FLL)
74
Usually Fine
WanderNerd Reliability Score
- 75%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 1.7%
- Cancelled
- 8 min early
- Median arrival delay
Based on 231 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 4455 departing between 3–6 AM arrived on time 94% of the time, versus 59% between 6–9 PM.
Friday is doing you no favors.
F9 4455 arrived on time 83% of the time on Thursdays and just 66% on Fridays. That gap is worth planning around.
The breakdown
- Mon80%(39 flights)
- Tue75%(12 flights)
- Wed73%(11 flights)
- Thu83%(40 flights)
- Fri66%(41 flights)
- Sat80%(44 flights)
- Sun69%(39 flights)
- 3–6 AM94%(47 flights)
- 6–9 AM75%(81 flights)
- 9 AM–12 PM67%(21 flights)
- 12–3 PM68%(28 flights)
- 3–6 PM69%(32 flights)
- 6–9 PM59%(17 flights)
85%
May
Jun 71% → May 85% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 71% | 21 |
| July 2025 | 75% | 20 |
| August 2025 | 83% | 23 |
| September 2025 | 95% | 21 |
| October 2025 | 96% | 22 |
| November 2025 | 86% | 22 |
| December 2025 | 56% | 16 |
| January 2026 | 58% | 24 |
| February 2026 | 50% | 14 |
| April 2026 | 65% | 17 |
| May 2026 | 85% | 20 |
- Departures on time
- 73%
- Diverted
- 0.4%
- Flights flown
- 226
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 231 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.