Flight Reliability
F9 3336 · Frontier Airlines
Portland → Ontario (PDX–ONT)
91
Nerd Approved
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0%
- Cancelled
- 8 min early
- Median arrival delay
Based on 109 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
F9 3336 arrived on time 93% of the time on Sundays and just 75% on Fridays. That gap is worth planning around.
A bit behind the PDX–ONT route.
F9 3336 arrived on time 83% of the time, versus 86% across the PDX–ONT route.
Better than the Frontier Airlines network average.
F9 3336 arrived on time 83% of the time, versus 73% across the Frontier Airlines network.
It basically never cancels.
Out of 109 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon82%(27 flights)
- Tue—(9 flights)
- Wed—(1 flights)
- Thu91%(11 flights)
- Fri75%(24 flights)
- Sat80%(10 flights)
- Sun93%(27 flights)
- 9 AM–12 PM83%(46 flights)
- 12–3 PM82%(28 flights)
- 3–6 PM—(5 flights)
- 6–9 PM83%(30 flights)
100%
Nov
Jun 83% → Nov 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 23 |
| July 2025 | 89% | 26 |
| August 2025 | 67% | 21 |
| September 2025 | 77% | 13 |
| October 2025 | 92% | 13 |
| November 2025 | 100% | 12 |
- Departures on time
- 79%
- Diverted
- 0%
- Flights flown
- 109
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 109 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.