Flight F91500
Frontier Airlines flight F91500
Looking for F91500 in the air…
Ontario (ONT) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 88 minutes. It was cancelled 0.9% of the time.
- On-time arrivals
- 90.2%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 88 min
- Flights arriving 15+ minutes late
- Flights tracked
- 320
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 43%
- Airline (crew, maintenance, cleaning) 30%
- Late-arriving aircraft 26%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.0% | 4 |
| October 2025 | 83.3% | 25 |
| November 2025 | 96.7% | 30 |
| December 2025 | 77.8% | 18 |
| January 2026 | 93.5% | 31 |
| February 2026 | 85.7% | 28 |
| March 2026 | 77.4% | 31 |
| April 2026 | 93.3% | 30 |
| May 2026 | 96.8% | 31 |
| June 2026 | 96.7% | 30 |
| July 2026 | 96.8% | 31 |
| August 2026 | 89.7% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data