Flight Reliability
F9 4346 · Frontier Airlines
Los Angeles → Denver (LAX–DEN)
- 84%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.8%
- Cancelled
- 14 min early
- Median arrival delay
Based on 132 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
F9 4346 departing between 9 AM–12 PM arrived on time 88% of the time, versus 58% between 3–6 PM.
Tuesdays have been rough.
F9 4346 arrived on time 96% of the time on Saturdays and just 71% on Tuesdays. That gap is worth planning around.
Better than the Frontier Airlines network average.
F9 4346 arrived on time 84% of the time, versus 73% across the Frontier Airlines network.
Recent months have been rougher.
F9 4346 arrived on time 77% of the time over the last three months in the data, compared with 92% in the three months before that.
The breakdown
- Mon83%(18 flights)
- Tue71%(14 flights)
- Wed83%(12 flights)
- Thu84%(19 flights)
- Fri76%(21 flights)
- Sat96%(24 flights)
- Sun87%(23 flights)
- 9 AM–12 PM88%(80 flights)
- 12–3 PM85%(39 flights)
- 3–6 PM58%(12 flights)
Jun 77% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 22 |
| July 2025 | 95% | 21 |
| August 2025 | 88% | 17 |
| October 2025 | 93% | 15 |
| January 2026 | 82% | 11 |
| February 2026 | 79% | 19 |
| May 2026 | 71% | 17 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 131
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 132 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.