F91439
F91439 (Frontier Airlines) flies Salt Lake City to Phoenix. Of 315 departures recorded from October 2024 to May 2026, 76.5% left on time, according to the US BTS.
according to the US BTS · Oct 12, 2024 → May 18, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 20 of 20 periods have data
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 18 | ▼ 33.3% |
| February | 16 | 10 | ▼ 37.5% |
| March | 14 | 17 | ▲ 21.4% |
| April | 17 | 12 | ▼ 29.4% |
| May | 12 | 6 | ▼ 50.0% |
| June | 14 | – | – |
| July | 21 | – | – |
| August | 14 | – | – |
| September | 13 | – | – |
| October | 21 | – | in progress |
| November | 6 | – | – |
| December | 17 | – | – |
| Year to date (Jan–May) | 86 | 63 | ▼ 26.7% |
according to the US BTS · October 2024 → May 2026
On-time departures by month
Partial coverage: domestic flights only · 20 of 20 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 92.6% | 68.8% | ▼ 25.7% |
| February | 81.3% | 100.0% | ▲ 23.1% |
| March | 85.7% | 94.1% | ▲ 9.8% |
| April | 75.0% | 83.3% | ▲ 11.1% |
| May | 83.3% | 33.3% | ▼ 60.0% |
| June | 35.7% | – | – |
| July | 52.4% | – | – |
| August | 61.5% | – | – |
| September | 69.2% | – | – |
| October | 76.2% | – | in progress |
| November | 83.3% | – | – |
| December | 76.5% | – | – |
| Year-to-date average (Jan–May) | 83.6% | 75.9% | ▼ 9.2% |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Partial coverage: domestic flights only · 20 of 20 periods have data
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Partial coverage: domestic flights only · 20 of 20 periods have data
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–May) | 1 | 2 | ▲ 100.0% |
according to the US BTS · October 2024 → May 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
Cancellation share
- Not cancelled 98.7% 311
- Cancelled 1.3% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 18, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC PHX Salt Lake City International Airport – Phoenix Sky Harbor International Airport | 818 | 14.0 min | 76.5% | 315 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 26 | 26 | 92.3% | 0 |
| December 2024 | 14 | 14 | 71.4% | 0 |
| January 2025 | 27 | 27 | 92.6% | 0 |
| February 2025 | 16 | 16 | 81.3% | 0 |
| March 2025 | 14 | 14 | 85.7% | 0 |
| April 2025 | 17 | 16 | 75.0% | 1 |
| May 2025 | 12 | 12 | 83.3% | 0 |
| June 2025 | 14 | 14 | 35.7% | 0 |
| July 2025 | 21 | 21 | 52.4% | 0 |
| August 2025 | 14 | 13 | 61.5% | 1 |
| September 2025 | 13 | 13 | 69.2% | 0 |
| October 2025 | 21 | 21 | 76.2% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 17 | 17 | 76.5% | 0 |
| January 2026 | 18 | 16 | 68.8% | 2 |
| February 2026 | 10 | 10 | 100.0% | 0 |
| March 2026 | 17 | 17 | 94.1% | 0 |
| April 2026 | 12 | 12 | 83.3% | 0 |
| May 2026 | 6 | 6 | 33.3% | 0 |