Flight F91159
Frontier Airlines flight F91159
Looking for F91159 in the air…
Alerts at this flight's airports
Ontario (ONT) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 68% of the time, and when it is late the delay averages 62 minutes. It was cancelled 1.7% of the time.
- On-time arrivals
- 31.6%
- Less than 15 minutes late
- Cancelled
- 1.7%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 58
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 67%
- Late-arriving aircraft 28%
- Airline (crew, maintenance, cleaning) 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Jul 2026
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| July 2026 | 23.1% | 27 |
| August 2026 | 38.7% | 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