Flight Reliability
F9 1581 · Frontier Airlines
Richmond → Denver (RIC–DEN)
84
Pretty Reliable
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0%
- Cancelled
- 5 min early
- Median arrival delay
Based on 53 historical flights. Data through May 2026.
What the data says
6–9 PM has a slight edge.
Departures between 6–9 PM arrived on time 77% of the time, against 73% between 3–6 PM.
Sunday scaries are real for this one.
F9 1581 arrived on time 91% of the time on Thursdays and just 58% on Sundays. That gap is worth planning around.
The breakdown
- Mon—(2 flights)
- Tue—(2 flights)
- Wed—(0 flights)
- Thu91%(23 flights)
- Fri—(2 flights)
- Sat—(0 flights)
- Sun58%(24 flights)
- 3–6 PM73%(22 flights)
- 6–9 PM77%(31 flights)
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 53
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 53 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.