Flight Reliability
F9 3357 · Frontier Airlines
Denver → Spokane (DEN–GEG)
92
Nerd Approved
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0%
- Cancelled
- 5 min early
- Median arrival delay
Based on 121 historical flights. Data through May 2026.
What the data says
Tuesdays have been rough.
F9 3357 arrived on time 91% of the time on Fridays and just 75% on Tuesdays. That gap is worth planning around.
Better than the DEN–GEG route average.
F9 3357 arrived on time 84% of the time, versus 76% across the DEN–GEG route.
Better than the Frontier Airlines network average.
F9 3357 arrived on time 84% of the time, versus 73% across the Frontier Airlines network.
It basically never cancels.
Out of 121 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon—(3 flights)
- Tue75%(12 flights)
- Wed—(0 flights)
- Thu86%(43 flights)
- Fri91%(11 flights)
- Sat—(5 flights)
- Sun85%(47 flights)
- 9 AM–12 PM84%(119 flights)
- 12–3 PM—(2 flights)
90%
Dec
Jun 73% → Dec 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 11 |
| July 2025 | 79% | 14 |
| August 2025 | 73% | 11 |
| September 2025 | 92% | 12 |
| October 2025 | 80% | 10 |
| November 2025 | 90% | 10 |
| December 2025 | 90% | 10 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 121
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 121 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.