Flight Reliability
F9 777 · Frontier Airlines
Denver → Las Vegas (DEN–LAS)
79
Usually Fine
WanderNerd Reliability Score
- 74%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 0.6%
- Cancelled
- 7 min early
- Median arrival delay
Based on 357 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
F9 777 arrived on time 90% of the time on Tuesdays and just 59% on Fridays. That gap is worth planning around.
Slipping a little lately.
F9 777 arrived on time 73% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon60%(52 flights)
- Tue90%(48 flights)
- Wed82%(49 flights)
- Thu69%(51 flights)
- Fri59%(51 flights)
- Sat81%(52 flights)
- Sun77%(52 flights)
74%
May
Jun 50% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 50% | 30 |
| July 2025 | 65% | 31 |
| August 2025 | 71% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 83% | 29 |
| November 2025 | 83% | 30 |
| December 2025 | 72% | 25 |
| January 2026 | 73% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 73% | 30 |
| April 2026 | 70% | 30 |
| May 2026 | 74% | 31 |
- Departures on time
- 73%
- Diverted
- 0%
- Flights flown
- 355
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 357 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.