Flight Reliability
F9 4811 · Frontier Airlines
Washington → Orlando (IAD–MCO)
41
Bring Snacks
WanderNerd Reliability Score
- 61%
- Arrive within 15 minutes
- 46 min
- Average arrival delay
- 2.5%
- Cancelled
- 0 min
- Median arrival delay
Based on 122 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 4811 departing between 6–9 PM arrived on time 66% of the time, versus 53% between 9 PM–12 AM.
Sunday scaries are real for this one.
F9 4811 arrived on time 76% of the time on Saturdays and just 39% on Sundays. That gap is worth planning around.
Well behind the IAD–MCO route.
F9 4811 arrived on time 61% of the time, versus 81% across the IAD–MCO route.
Lagging the Frontier Airlines network.
F9 4811 arrived on time 61% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon65%(26 flights)
- Tue—(0 flights)
- Wed—(2 flights)
- Thu64%(22 flights)
- Fri64%(25 flights)
- Sat76%(21 flights)
- Sun39%(23 flights)
- 12–3 PM60%(42 flights)
- 6–9 PM66%(58 flights)
- 9 PM–12 AM53%(19 flights)
50%
Nov
Jun 53% → Nov 50% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 53% | 15 |
| July 2025 | 47% | 19 |
| August 2025 | 59% | 22 |
| September 2025 | 86% | 21 |
| October 2025 | 70% | 20 |
| November 2025 | 50% | 10 |
- Departures on time
- 65%
- Diverted
- 0%
- Flights flown
- 119
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 122 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.