Flight F91504
Frontier Airlines flight F91504
Looking for F91504 in the air…
Alerts at this flight's airports
San Francisco (SFO) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 106 minutes. It was cancelled 0.9% of the time.
- On-time arrivals
- 72.2%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 106 min
- Flights arriving 15+ minutes late
- Flights tracked
- 109
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 62%
- Airline (crew, maintenance, cleaning) 28%
- Air traffic control & airport 9%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Jun 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.2% | 17 |
| October 2025 | 58.8% | 17 |
| November 2025 | 75.0% | 9 |
| December 2025 | 45.5% | 11 |
| January 2026 | 50.0% | 2 |
| March 2026 | 100.0% | 12 |
| April 2026 | 60.0% | 10 |
| May 2026 | 65.2% | 23 |
| June 2026 | 100.0% | 8 |
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