Flight Reliability
F9 1608 · Frontier Airlines
Denver → Milwaukee (DEN–MKE)
95
Nerd Approved
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0%
- Cancelled
- 14 min early
- Median arrival delay
Based on 69 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
F9 1608 arrived on time 97% of the time on Mondays and just 77% on Fridays. That gap is worth planning around.
Better than the DEN–MKE route average.
F9 1608 arrived on time 87% of the time, versus 75% across the DEN–MKE route.
Better than the Frontier Airlines network average.
F9 1608 arrived on time 87% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon97%(30 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu—(0 flights)
- Fri77%(30 flights)
- Sat—(2 flights)
- Sun—(6 flights)
- 9 AM–12 PM—(4 flights)
- 12–3 PM—(7 flights)
- 3–6 PM86%(58 flights)
100%
Oct
Aug 82% → Oct 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 82% | 11 |
| September 2025 | 100% | 11 |
| October 2025 | 100% | 10 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 69
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 69 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.