Flight Reliability
F9 2015 · Frontier Airlines
Denver → Las Vegas (DEN–LAS)
91
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 4 min early
- Average arrival delay
- 1.6%
- Cancelled
- 11 min early
- Median arrival delay
Based on 248 historical flights. Data through May 2026.
What the data says
Tuesday is the weak spot.
F9 2015 arrived on time 95% of the time on Saturdays. On Tuesdays: 80%.
Better than the DEN–LAS route average.
F9 2015 arrived on time 90% of the time, versus 76% across the DEN–LAS route.
Well ahead of the Frontier Airlines network.
F9 2015 arrived on time 90% of the time, versus 73% across the Frontier Airlines network.
Ticking up lately.
F9 2015 arrived on time 91% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon90%(48 flights)
- Tue80%(15 flights)
- Wed92%(13 flights)
- Thu94%(47 flights)
- Fri84%(51 flights)
- Sat95%(19 flights)
- Sun92%(51 flights)
- 6–9 AM90%(240 flights)
- 9 AM–12 PM—(4 flights)
95%
May
Jun 92% → May 95% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 92% | 12 |
| July 2025 | 94% | 17 |
| August 2025 | 95% | 20 |
| September 2025 | 88% | 17 |
| October 2025 | 93% | 27 |
| November 2025 | 89% | 27 |
| December 2025 | 81% | 26 |
| January 2026 | 90% | 20 |
| February 2026 | 85% | 20 |
| March 2026 | 90% | 20 |
| April 2026 | 90% | 19 |
| May 2026 | 95% | 19 |
- Departures on time
- 91%
- Diverted
- 0%
- Flights flown
- 244
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 248 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.