Flight Reliability
F9 1859 · Frontier Airlines
Austin → Denver (AUS–DEN)
97
Nerd Approved
WanderNerd Reliability Score
- 89%
- Arrive within 15 minutes
- 13 min early
- Average arrival delay
- 0%
- Cancelled
- 17 min early
- Median arrival delay
Based on 36 historical flights. Data through May 2026.
What the data says
Better than the AUS–DEN route average.
F9 1859 arrived on time 89% of the time, versus 79% across the AUS–DEN route.
Well ahead of the Frontier Airlines network.
F9 1859 arrived on time 89% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(4 flights)
- Tue—(2 flights)
- Wed—(1 flights)
- Thu—(9 flights)
- Fri—(5 flights)
- Sat—(6 flights)
- Sun—(9 flights)
- 9 AM–12 PM88%(33 flights)
- 12–3 PM—(3 flights)
100%
May
Feb 100% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| February 2026 | 100% | 10 |
| March 2026 | 71% | 14 |
| May 2026 | 100% | 11 |
- Departures on time
- 92%
- Diverted
- 0%
- Flights flown
- 36
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 36 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.