F91504
F91504 (Frontier Airlines) flies San Francisco to Salt Lake City. Of 166 departures recorded from December 2024 to June 2026, 70.7% left on time, according to the US BTS.
- On-time departures70.7%of 166 flights
- Average delay21.6 min
- June 20268▼ 27.3%vs June 2025
- Cancelled1.2%
Recorded departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 2 | ▼ 33.3% |
| February | 2 | – | – |
| March | – | 12 | – |
| April | 2 | 10 | ▲ 400.0% |
| May | 9 | 23 | ▲ 155.6% |
| June | 11 | 8 | ▼ 27.3% |
| July | 14 | – | – |
| August | 14 | – | – |
| September | 17 | – | – |
| October | 17 | – | in progress |
| November | 9 | – | – |
| December | 11 | – | – |
according to the US BTS · December 2024 → June 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 66.7% | 50.0% | ▼ 25.0% |
| February | 50.0% | – | – |
| March | – | 100.0% | – |
| April | 100.0% | 70.0% | ▼ 30.0% |
| May | 87.5% | 43.5% | ▼ 50.3% |
| June | 72.7% | 75.0% | ▲ 3.1% |
| July | 71.4% | – | – |
| August | 71.4% | – | – |
| September | 82.4% | – | – |
| October | 76.5% | – | in progress |
| November | 75.0% | – | – |
| December | 45.5% | – | – |
according to the US BTS · December 2024 → June 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · December 2024 → June 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | – | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · December 2024 → June 2026
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 98.8% 164
- Cancelled 1.2% 2
Share of all recorded flights in the period, all legs. · Dec 7, 2024 → Jun 8, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO SLC San Francisco International Airport – Salt Lake City International Airport | 962 | 21.6 min | 70.7% | 166 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 2 | 2 | 100.0% | 0 |
| January 2025 | 3 | 3 | 66.7% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| April 2025 | 2 | 2 | 100.0% | 0 |
| May 2025 | 9 | 8 | 87.5% | 1 |
| June 2025 | 11 | 11 | 72.7% | 0 |
| July 2025 | 14 | 14 | 71.4% | 0 |
| August 2025 | 14 | 14 | 71.4% | 0 |
| September 2025 | 17 | 17 | 82.4% | 0 |
| October 2025 | 17 | 17 | 76.5% | 0 |
| November 2025 | 9 | 8 | 75.0% | 1 |
| December 2025 | 11 | 11 | 45.5% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| March 2026 | 12 | 12 | 100.0% | 0 |
| April 2026 | 10 | 10 | 70.0% | 0 |
| May 2026 | 23 | 23 | 43.5% | 0 |
| June 2026 | 8 | 8 | 75.0% | 0 |