Flight Reliability
F9 4966 · Frontier Airlines
Las Vegas → Cleveland (LAS–CLE)
81
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.9%
- Cancelled
- 7 min early
- Median arrival delay
Based on 228 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
F9 4966 arrived on time 96% of the time on Saturdays and just 61% on Fridays. That gap is worth planning around.
A bit ahead of the Frontier Airlines network.
F9 4966 arrived on time 76% of the time, versus 73% across the Frontier Airlines network.
Slipping a little lately.
F9 4966 arrived on time 76% of the time over the last three months in the data, compared with 79% in the three months before that.
The breakdown
- Mon67%(18 flights)
- Tue83%(18 flights)
- Wed95%(41 flights)
- Thu72%(39 flights)
- Fri61%(41 flights)
- Sat96%(27 flights)
- Sun64%(42 flights)
- 9 AM–12 PM—(5 flights)
- 9 PM–12 AM77%(221 flights)
80%
Apr
Jun 58% → Apr 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 58% | 19 |
| July 2025 | 61% | 18 |
| August 2025 | 85% | 20 |
| September 2025 | 94% | 16 |
| October 2025 | 71% | 21 |
| November 2025 | 79% | 24 |
| December 2025 | 88% | 16 |
| February 2026 | 71% | 21 |
| March 2026 | 77% | 30 |
| April 2026 | 80% | 30 |
- Departures on time
- 72%
- Diverted
- 0%
- Flights flown
- 226
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 228 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.