Flight Reliability
F9 4726 · Frontier Airlines
Orlando → San Juan (MCO–SJU)
75
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0.9%
- Cancelled
- 3 min early
- Median arrival delay
Based on 341 historical flights. Data through May 2026.
What the data says
6–9 PM has a slight edge.
Departures between 6–9 PM arrived on time 77% of the time, against 72% between 9 PM–12 AM.
Sunday scaries are real for this one.
F9 4726 arrived on time 83% of the time on Wednesdays and just 61% on Sundays. That gap is worth planning around.
Trending in the right direction.
F9 4726 arrived on time 79% of the time over the last three months in the data, compared with 69% in the three months before that.
The breakdown
- Mon67%(46 flights)
- Tue75%(40 flights)
- Wed83%(47 flights)
- Thu73%(51 flights)
- Fri75%(52 flights)
- Sat73%(51 flights)
- Sun61%(51 flights)
- 6–9 PM77%(13 flights)
- 9 PM–12 AM72%(325 flights)
97%
May
Jun 52% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 52% | 29 |
| July 2025 | 55% | 31 |
| August 2025 | 69% | 29 |
| September 2025 | 76% | 29 |
| October 2025 | 90% | 29 |
| November 2025 | 82% | 27 |
| December 2025 | 76% | 25 |
| January 2026 | 61% | 23 |
| February 2026 | 69% | 26 |
| March 2026 | 67% | 30 |
| April 2026 | 72% | 29 |
| May 2026 | 97% | 31 |
- Departures on time
- 71%
- Diverted
- 0%
- Flights flown
- 338
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 341 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.