Flight Reliability
F9 3865 · Frontier Airlines
Denver → Everett (DEN–PAE)
98
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 58 historical flights. Data through May 2026.
What the data says
Monday is the weak spot.
F9 3865 arrived on time 96% of the time on Fridays. On Mondays: 83%.
Well ahead of the Frontier Airlines network.
F9 3865 arrived on time 90% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon83%(29 flights)
- Tue—(0 flights)
- Wed—(1 flights)
- Thu—(0 flights)
- Fri96%(28 flights)
- Sat—(0 flights)
- Sun—(0 flights)
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 58
- Months covered
- 8
Keep nerding
Based on 58 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.