Flight Reliability
F9 2851 · Frontier Airlines
Phoenix → Spokane (PHX–GEG)
75
Usually Fine
WanderNerd Reliability Score
- 69%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0%
- Cancelled
- 4 min early
- Median arrival delay
Based on 45 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
F9 2851 departing between 12–3 PM arrived on time 75% of the time, versus 60% between 3–6 PM.
Sunday scaries are real for this one.
F9 2851 arrived on time 74% of the time on Thursdays. On Sundays: 62%.
Lagging the PHX–GEG route.
F9 2851 arrived on time 69% of the time, versus 78% across the PHX–GEG route.
A bit behind the Frontier Airlines network.
F9 2851 arrived on time 69% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(1 flights)
- Tue—(2 flights)
- Wed—(1 flights)
- Thu74%(19 flights)
- Fri—(1 flights)
- Sat—(0 flights)
- Sun62%(21 flights)
- 6–9 AM—(4 flights)
- 9 AM–12 PM64%(11 flights)
- 12–3 PM75%(20 flights)
- 3–6 PM60%(10 flights)
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 45
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 45 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.